A DECADE OF MOMENTUM FUTURE FORWARD THE LIV DIFFERENCE
ENVILIV ADVANCED SL: KEY PERFORMANCE FACTORS
ENVILIV ADVANCED SL: FEATURES
ENVILIV ADVANCED PRO: KEY PERFORMANCE FACTORS
ENVILIV ADVANCED PRO: FEATURES
ENVILIV ADVANCED: KEY PERFORMANCE FACTORS
ATHLETE TESTED, RACE PROVEN WOMEN FIRST LINEUP ADVANCED COMPOSITE TECHNOLOGY TESTING RESULTS
GEOMETRY APPENDIX
In 2013, Liv asked the question the industry had yet to address:
What if an aero road bike was designed for women from the very start?
The answer was Envie — the world’s first aerodynamic road bike designed from the ground up for women. Guided by Liv’s design philosophy, it delivered a purpose-built approach to geometry, components, and ride quality, informed by realworld riding and racing experience.
From its debut, Envie was raced by athletes who are now among the most recognizable and influential names in women’s cycling, including Marianne Vos, Kasia Niewiadoma-Phinney, Pauline Ferrand-Prévot, Annemiek van Vleuten, and Anna van der Breggen.
For Marianne Vos, that trust translated into defining victories, with the Envie carrying her to the 2013 UCI Road World Championship and landmark wins at the inaugural La Course by Le Tour de France and the first edition of The Women’s Tour.
As racing evolved, placing new demands on handling, braking control, and real-world efficiency, Envie evolved in response.
Envie became EnviLiv, reinforcing its pure Liv lineage and maturing into a more complete aero race platform.
Disc brakes sharpened handling and control, enabling deeper integration and more consistent performance on the road. AeroSystem Shaping Technology began treating the bike and rider as a single aerodynamic form, prioritizing efficiency beyond ideal test environments. Truncated ellipse tube profiles balanced drag reduction with stiffness, while the OverDrive 2 oversized steerer tube delivered precision through sprints and confidence at speed.
This was aero refined — broader capability, greater confidence, and speed that translated deeper into real racing.
On the road, EnviLiv became a familiar presence under CCC-Liv, Liv Racing, Liv Racing Xstra, and Team BikeExchange-Jayco, establishing itself as a versatile aero race platform at the highest level.
The third generation marked EnviLiv’s entry into the highest tier of aero race performance.
For the first time, the platform introduced an Advanced SL frameset, pairing its aerodynamic foundation with elite-level stiffness-to-weight. Designed to perform across road racing, criteriums, and Olympic-distance triathlon, this generation reflected the expanding demands of modern competition. Weight was reduced. Ride quality refined. Integration advanced — all without compromising the aero efficiency that defined EnviLiv from the start.
On the racecourse, the impact was immediate. Liv Racing TeqFind and Liv AlUla Jayco delivered victories and national titles aboard EnviLiv, while Liv Racing Collective triathletes Lisa Tertsch and Emma Lombardi earned European and World Championship wins and podiums at the highest level.
Fast. Focused. Proven. The benchmark — until now.
Faster than your wildest imaginings. Lighter than seems logical. From WorldTour road racing to high-speed triathlon to the weekly club ride, the EnviLiv was built to stoke epic ambition.
This next evolution of EnviLiv pushes beyond incremental gains. The entire system has been integrated and optimized as a unified aero package — frame, cockpit, wheels, tires, and rider working together.
ENVLIV ADVANCED SL
The EnviLiv Advanced SL leads the way with refined frameset geometry and a new integrated seatpost, plus a narrower cockpit and updated wheel systems and tires. The result? Performance gains that aren’t just measurable in the wind tunnel, they’re meaningful in the real world. 121 GRAMS LIGHTER → Better handling, easier climbing
9.8% STIFFER → Accelerate faster from 0 and out of corners
8.62 WATTS FASTER → Improve race results and group ride pace
From the World Triathlon Championship Series to the Tour de France Femmes avec Zwift and every bunch sprint and breakaway in between, demand is surging for high-performance, high-speed aero.
We built the EnviLiv for the women who want to be at the front of the pro peloton—and also for women they inspire. We want more women to know the feeling of pure power and adrenaline unique to the aero experience. And we continue to innovate, each bike more powerful than the last, making each race more thrilling, and each season bigger, better, and faster for athletes and fans alike.
When you buy a Liv bike, you’re investing in women.
At Liv, we’re committed to women-first research and design. But we don’t just build women’s bikes.
We’re working to build the sport, at every level , around the world.
We elevate women in the industry, from our founder, CEO, and engineers to team managers, mechanics, and physios.
We cultivate a growing community of riders—both online, with original storytelling and how-to guide content, and on the ground, thanks to an enthusiastic network of ambassadors.
We champion women at the highest levels of racing, as sponsors of two pro road cycling teams—Liv AlUla Jayco Women’s WorldTeam and Women’s Continental Team.
We are proud to be a premier sponsor of the Tour de France Femmes avec Zwift, as well as sponsor of the White Jersey for Best Young Rider Classification.
Women’s cycling is light years from where we started. And so is the EnviLiv, thanks to ongoing collaboration with pro athletes at the highest levels of road and tri.
Liv Racing Collective is our network of privateer racers that spans disciplines, including triathlon—putting the EnviLiv to the test in Olympic- and T100-distance competitions, where quick acceleration and leg-saving efficiency are critical.
Lisa Tertsch demands a lot of the EnviLiv and herself—and the results speak for themselves. This season, she’ll debut the bike she helped shape: a custom World Triathlon Champion EnviLiv Advanced SL.
Liv AlUla Jayco is our WorldTour team, competing in the sport’s most competitive and prestigious road races, including the Strade Bianche this spring and the Tour de France Femmes avec Zwift this summer—where every point and podium opportunity matter.
Competing on the EnviLiv Advanced SL, Liv AlUla Jayco riders claimed elite and U23 national titles across both disciplines.
We want more women on bikes. That means doing things differently. And that means putting women first.
From research and design, to frame sizing and component selection, to testing by women, for women.
From our continued commitment to the Tour de France Femmes avec Zwift as a major partner as well as sponsor of the white jersey for Best Young Rider classification, to Liv Cycling Clubs and many other group rides and communities worldwide.
From Liv AlUla Jayco WorldTeam and Continental Team, to Liv Racing Collective, our network of privateer racers, spanning disciplines from gravel to MTB to triathlon.
From our founder to our CEO today, with women in influential positions across the company in every region—including engineering, design, sales and marketing.
From bikes for every discipline, level, and budget, to guide content and support for building skills, confidence, and community along the way.
For WorldTour sprinters and high-speed triathletes who know that every second counts, the EnviLiv Advanced SL was made to overtake competitors, surpass expectations, and transcend reality. Designed with next-level, full-system integration for refined aerodynamics and reduced weight, this is our fastest, most efficient, most ambitious EnviLiv to date.
Reengineered for lighter weight and greater efficiency, the all-new EnviLiv Advanced SL introduces an integrated seatpost (ISP) design that eliminates traditional seatpost hardware, reducing overall mass while enhancing ride feel through increased compliance and vibration damping. This is the first time ISP technology appears on the EnviLiv platform, bringing proven WorldTour performance benefits to Liv’s most advanced aero race bike.
The EnviLiv Advanced SL is designed as a complete aerodynamic system, with every component working together to reduce drag at race speed. From the aero frameset to the onepiece Liv Contact SLR Aero cockpit, wheelsystems, and tires, each element is integrated to optimize airflow across the entire bike. The result is aerodynamic performance that’s realized not in isolation, but as a unified system built for real-world racing.
Lowered seatstays add vertical compliance that smooths road vibration and improves aerodynamic efficiency, keeping the bike composed at speed when the road gets rough. With clearance for tires up to 32mm, the EnviLiv Advanced SL delivers added confidence across variable surfaces— without compromising precision, speed, or its race-ready character.
01. AEROSYSTEM SHAPING:
Strategically engineered airfoil sections use truncated ellipse tubing to more effectively reduce drag compared to traditional teardrop shaped tubes. The system is developed and proven through CFD modeling and wind-tunnel testing at a wide range of yaw angles.
02. ADVANCED SL COMPOSITE:
Professional-grade raw carbon is woven in the Giant Group composite factory using the most advanced engineering and construction methods. Continuous Fiber Technology adds strength and minimizes weight.
03. ONE-PIECE MOLD:
Proprietary construction technique uses a single bladder (as opposed to previous generation’s three bladders) to create a one-piece front triangle. The result is reduced weight without compromising stiffness or aerodynamic shaping.
04. FULL COMPOSITE FORK:
D-shaped steerer tube and legs are constructed entirely with Advanced SL-grade composite for ultralight weight, precise handling, and improved aerodynamic performance–along with increased clearance for ties up to 32mm.
05. CADEX MAX 50 WHEELSYSTEM:
Engineered with proprietary Dynamic Balanced Lacing technology, this aero WheelSystem delivers superior efficiency, pinpoint control and supreme aerodynamics.
06. CADEX AERO TIRE:
A lightweight dual-layer TPI casing with an aerodynamic 64-groove shoulder tread helps reduce drag and rolling resistance to help you accelerate and sustain higher speeds.
07. AERODYNAMIC HANDLEBAR & STEM:
Integrated composite handlebar and stem unit features aero shaping with flat handlebar tops and raised edges to help riders maintain a stable aero position. Internal cable routing further improves aerodynamics while maintaining ease of setup and adjustment.
08. OVERDRIVE AERO:
The D-shaped fork steerer tube and corresponding spacers provide an extremely aerodynamic, easy-to-service system of internally routed brake and derailleur cables.
09. INTERNAL CABLE ROUTING:
The frame, handlebar, and stem feature unique cable porting, offering a sleek, non-cluttered appearance while maintaining the ease of adjustment.
10. VECTOR INTEGRATED SEATPOST:
Designed as a key performance element of the frameset, the integrated seatpost saves 64 grams compared to the standard composite posts, while improving aerodynamics and adding road-smoothing compliance.
11. AERO BOTTLE CAGES:
Custom-engineered down tube- and seat tube-specific bottle cages help reduce overall aerodynamic drag.
For riders in pursuit of elite speed on the race course or club ride, the EnviLiv Advanced Pro delivers WorldTour-inspired aero efficiency. Designed for integrated performance, with refined aerodynamics and a lightweight carbon frameset and WheelSystem, this EnviLiv is ready to chase the light and own the moment.
RACE-TUNED EFFICIENCY
The Advanced-grade composite frame is paired with an Advanced SL–grade composite fork to balance low weight with race-tuned stiffness where it matters most. The result is efficient power transfer, precise front-end response, and confident performance through accelerations, climbs, and long efforts at race pace.
Refined tube shaping and integrated components—from cockpit to wheels and tires—work together to reduce drag across the entire bike, helping riders hold higher speeds with less effort in real race situations, whether riding solo or deep in the pack.
Lowered seatstays add vertical compliance that smooths road vibration and improves aerodynamic efficiency, keeping the bike composed at speed when the road gets rough. With clearance for tires up to 32mm, the EnviLiv Advanced Pro delivers confidence and consistency across changing surfaces and conditions.
01.AEROSYSTEM SHAPING: 06.GIANT GAVIA COURSE TIRE:
Strategically engineered airfoil sections use truncated ellipse tubing to more effectively reduce drag compared to traditional teardrop shaped tubes. The system is developed and proven through CFD modeling and wind-tunnel testing at a wide range of yaw angles.
02.ADVANCED COMPOSITE:
High-performance grade raw carbon material is used to produce this custom frame material in our own composite factory with a high stiffness-to-weight ratio. The front triangle is assembled and molded as one continuous piece in a proprietary manufacturing process called Modified Monocoque Construction.
03.ADVANCED SL COMPOSITE FORK:
Advanced SL-grade composite fork features a symmetric design and aero shaping, along with disc brake integration and increased clearance for tires up to 32mm. This new design makes it lighter, stiffer and more aerodynamic.
A renewed casing construction and RR-S compound help reduce rolling resistance while maintaining confident grip, helping riders accelerate and sustain speed with improved aerodynamic efficiency. Featured on Advanced Pro 1.
07.AERODYNAMIC HANDLEBAR & STEM:
Integrated composite handlebar and stem unit features aero shaping with flat handlebar tops and raised edges to help riders maintain a stable aero position. Internal cable routing further improves aerodynamics while maintaining ease of setup and adjustment.
08.OVERDRIVE AERO:
The D-shaped fork steerer tube and corresponding spacers provide an extremely aerodynamic, easy-to-service system of internally routed brake and derailleur cables.
09.INTERNAL CABLE ROUTING:
04.GIANT WHEELSYSTEM:
Engineered with proprietary Dynamic Balanced Lacing technology and 50mm deep composite rims, this aero WheelSystem delivers superior efficiency, pinpoint control and supreme aerodynamics.
05.CADEX AERO TIRE:
A lightweight dual-layer TPI casing with an aerodynamic 32-groove shoulder tread helps reduce drag and rolling resistance to help you accelerate and sustain higher speeds. Featured on Advanced Pro 0.
The frame, handlebar, and stem feature unique cable porting, offering a sleek, non-cluttered appearance while maintaining the ease of adjustment.
10.VECTOR SEATPOST:
This proprietary seatpost design offers the perfect balance of light weight, aerodynamic performance and compliance, along with easy saddle installation and adjustment.
11.AERO BOTTLE CAGES:
Custom-engineered down tube- and seat tube-specific bottle cages help reduce overall aerodynamic drag.
For riders seeking the iconic style and speed of aero, the EnviLiv Advanced delivers race-inspired, futureforward performance. With refined aerodynamics, clean integration, and a lightweight carbon frameset, this EnviLiv can’t help but elevate everyday rides to exhilarating new levels.
The Advanced-grade composite frameset delivers an ideal balance of lightweight performance and stiffness, helping riders accelerate smoothly and maintain speed with less effort. It’s a platform designed to feel fast and efficient, whether pushing the pace or settling into long, all-day rides.
Race-inspired tube shaping and clean internal cable routing reduce drag while creating a sleek, contemporary silhouette. More than just fast-looking, the EnviLiv Advanced is engineered to be fast—helping riders hold speed more efficiently during solo efforts and hightempo group rides.
Lowered seatstays add vertical compliance that smooths road vibration and improves aerodynamic efficiency, keeping the bike composed at speed when the road gets rough. With clearance for tires up to 32mm, the EnviLiv Advanced delivers added grip and comfort while preserving a sharp, performance-focused ride character.
01.AEROSYSTEM SHAPING: 06.AERODYNAMIC HANDLEBAR & STEM:
Strategically engineered airfoil sections use truncated ellipse tubing to more effectively reduce drag compared to traditional teardrop shaped tubes. The system is developed and proven through CFD modeling and wind-tunnel testing at a wide range of yaw angles.
02.ADVANCED COMPOSITE:
High-performance grade raw carbon material is used to produce this custom frame material in our own composite factory with a high stiffness-to-weight ratio. The front triangle is assembled and molded as one continuous piece in a proprietary manufacturing process called Modified Monocoque Construction.
03.ADVANCED COMPOSITE FORK:
Advanced-grade composite fork features a symmetric design and aero shaping, along with disc brake integration and increased clearance for tires up to 32mm. This new design makes it lighter, stiffer and more aerodynamic.
04.GIANT WHEELSYSTEM:
Engineered with proprietary Dynamic Balanced Lacing technology and 50mm deep composite rims, this aero WheelSystem delivers superior efficiency, pinpoint control and supreme aerodynamics. Featured on Advanced 0 and 1.
05.GIANT GAVIA COURSE TIRE:
A renewed casing construction and RR-S compound help reduce rolling resistance while maintaining confident grip, helping riders accelerate and sustain speed with improved aerodynamic efficiency.
An aero-shaped handlebar and stem setup keeps the front end fast and adaptable. Flat tops with subtle raised edges offer control in dynamic riding positions, and internal cable routing delivers a clean look with easy adjustability.
07.OVERDRIVE AERO:
The D-shaped fork steerer tube and corresponding spacers provide an extremely aerodynamic, easy-to-service system of internally routed brake and derailleur cables.
08.INTERNAL CABLE ROUTING:
The frame, handlebar, and stem feature unique cable porting, offering a sleek, non-cluttered appearance while maintaining the ease of adjustment.
09.VECTOR SEATPOST:
This proprietary seatpost design offers the perfect balance of light weight, aerodynamic performance and compliance, along with easy saddle installation and adjustment.
10.AERO BOTTLE CAGES:
Custom-engineered down tube- and seat tube-specific bottle cages help reduce overall aerodynamic drag.
With more than 30 years of experience in composites engineering, plus a long history of rigorous development and testing with professional athletes, Giant Group is the industry leader in composite bicycle technology. To meet the needs of high-performance riders, Liv offers two grades of composites: Advanced SL and Advanced. Both feature unique materials, resin formulas and construction techniques.
LIGHTWEIGHT CARBON MATERIAL AND RESIN
LIGHTEST WEIGHT CARBON MATERIAL AND RESIN
MODIFIED MONOCOQUE CONSTRUCTION
ONE-PIECE MONOCOQUE CONSTRUCTION
CNT RESIN TECHNOLOGY
THINLINE PAINTING TECHNOLOGY
COLD-BLADE CUTTING TECHNOLOGY
Professional Grade raw carbon fiber is woven in our composite factory to produce our lightest, stiffest and highest quality frames. This is the technology used by Liv’s pro racers in almost every cycling discipline. These frames feature the most advanced engineering and construction methods.
01. MATERIALS:
Professional Grade raw carbon material is used to engineer framesets with the highest stiffnessto-weight ratios available today.
02. RESIN:
Professional Formula resin features Carbon Nanotube Technology (CNT), a microscopic polymer that acts like miniature buttresses to strengthen the layers of composite. Frames featuring CNT are 14% more impact resistant than those without it.
03. ONE-PIECE MOLDING TECHNOLOGY:
New construction technique uses a single bladder (as opposed to previous generation’s three bladders) to create a one-piece front triangle. The result is reduced weight without compromising stiffness or aerodynamic shaping.
04. CONTINUOUS FIBER TECHNOLOGY:
This manufacturing process allows Liv to construct the front triangle of Advanced SL frames with larger, and therefore fewer, sections of composite material. With fewer pieces and junctions, these frames are lighter and significantly stronger.*
05. COLD-BLADE CUTTING TECHNOLOGY:
Whereas previous generations of EnviLiv frames relied on laser-cut composite swatches, cold blade technology is now used to make ultra-precise cuts and eliminate the concern of deformation from excess heat. This translates into fewer and more exacting swatches, which results in lighter overall frame weight.
*Found on select framesets.
Liv will be the first to say that not all women’s bodies are the same. But when it comes to aerodynamic testing, one thing is clear: testing women’s equipment using male-based models leaves real performance on the table.
Georgia was developed using the body dimensions of Georgia Baker from Liv AlUla Jayco, serving as a reference point to more closely represent a woman’s body in the wind tunnel—because women’s bodies shape airflow, whether the industry has acknowledged it or not. Incorporating a realistic upper-torso form, including chest anatomy, allows Liv to more accurately evaluate airflow through the torso and shoulder region, where aerodynamics can meaningfully impact performance.
To support this level of realism, Georgia was built using advanced 3D printing and a modular design approach. Leg geometry has been refined to reflect realistic length and thigh shaping, while the foot form precisely replicates the foot-and-shoe interface— eliminating the need for a physical shoe during testing.
Up top, an interchangeable head and highly adjustable neck angle make it possible to study airflow over, through, and down the back of a helmet. The head form can also be swapped for a thermal-sensing version equipped with integrated temperature sensors, allowing engineers to measure heat dissipation alongside aerodynamic performance.
Together, this adjustability and modularity create a repeatable, adaptable testing platform—one that reflects real riders, real equipment, and real riding positions, and allows Liv to develop aerodynamic systems that perform across a wide spectrum of women riders.
This analysis quantifies the performance leap of the new EnviLiv Advanced SL 0 by comparing its total system resistance against the previous generation. By evaluating aerodynamic drag, rotational losses, and rolling resistance as a unified system, Liv captures performance gains that translate directly to real-world speed.
To ensure consistency and scientific accuracy, both generations were tested using the same baseline conditions and rider configuration.
METHODOLOGY
We utilized three distinct protocols to capture a complete picture of total resistance:
Linear Aerodynamic Drag: Measured using Georgia, including her articulating leg system, to evaluate linear aerodynamic drag at 40 km/h across yaw angles from −20° to +20°.
Rotational Drag: Measured at 40 km/h across yaw angles from −20° to +20°, isolating the force difference between wind-on and wind-off states to capture wheel and drivetrain rotational losses.
Rolling Resistance: Measured at 40 km/h with a 42 kg load per tire, simulating an 84 kg total system weight to evaluate tire efficiency and real-world power losses.
An 8.62-watt reduction in total system resistance delivers a measurable real-world performance advantage. By reducing aerodynamic drag, rotational losses, and rolling resistance together, the new EnviLiv Advanced SL 0 allows riders to maintain higher speeds for the same effort—or conserve energy over race-relevant distances.
This is system-level speed, delivered where it counts.
TESTING DEFINITION:
Size medium, unpainted production frame and fork, including headset and top cap, rear derailleur hardware, and all production hardware (water bottle bolts, etc.).
Units: All weights are measured in grams (g).
Baseline: All weight differences are shown relative to the new EnviLiv Advanced SL unless otherwise noted.
In total, the fourth-generation EnviLiv Advanced SL frameset is 120.93 grams lighter than the previous generation—a 7.7% reduction—making it the lightest EnviLiv to date. To evaluate complete bike weight, the transmission system was also measured, delivering an additional 411.43-gram reduction, a 10.5% savings. Weight reductions are driven primarily by frame design, integrated seatpost construction, and system-level component optimization.
All stiffness testing was conducted using industry-standard protocols on size medium framesets to ensure consistent, comparable results. A steel dummy fork was used for both steering and pedaling tests to more accurately replicate real-world riding conditions and eliminate variability introduced by carbon fork flex.
This methodology ensures that measured stiffness differences translate directly to on-road performance, not just lab results.
FRAMESET STIFFNESS:
Test Methodology
Steering (Torsional) Stiffness
Rear dropouts were fixed while lateral force was applied to the fork. This measures how much the complete frameset twists under load. Higher torsional stiffness improves cornering precision, front-end stability, and responsiveness at speed.
Pedaling Stiffness
Rear dropouts and dummy fork were fixed, the frame was inclined at 10°, and vertical force was applied at the pedal eye of the crank arm. Higher stiffness here delivers more efficient power transfer and reduces energy loss during hard accelerations.
ADVANCED SL | FRAME STIFFNESS PROGRESSION
Baseline: Previous-generation EnviLiv Advanced SL
FRAME PEDALING STIFFNESS (N/mm)
FRAME TORSIONAL STIFFNESS (N/°)
FORK STIFFNESS (N/mm)
Advanced
(NEW = Baseline) What it means: The new EnviLiv Advanced SL delivers a significant gain in pedaling efficiency while maintaining proven torsional stiffness and improving front-end control.
FRAME PEDALING STIFFNESS (N/mm)
FRAME TORSIONAL STIFFNESS (N/°)
FORK STIFFNESS (N/mm)
What it means: EnviLiv Advanced SL sets the benchmark for stiffness and race-level power transfer, while Advanced Pro and Advanced balance stiffness with accessibility and ride compliance.
SYSTEM STIFFNESS –
PEDALING AND HANDLING:
Unlike traditional stiffness testing that evaluates isolated frame components, Liv’s system testing measures complete power and control pathways:
Pedaling system: Pedals → drivetrain → rear wheel Control system : Handlebar → frameset → front wheel
By evaluating stiffness at the system level, these results reflect how rider input is transferred during real pedaling, sprinting, and handling — not just how individual parts perform in isolation.
ENVILIV ADVANCED SL | SYSTEM STIFFNESS PROGRESSION
Baseline: Previous-generation EnviLiv Advanced SL
FRAMESET TRANSMISSION (N/mm) (PEDALING + FORK)
SYSTEM PEDALING STIFFNESS (N/mm)
SYSTEM CONTROLLING STIFFNESS (N/mm)
What it means: The new EnviLiv Advanced SL delivers measurable gains in whole-system efficiency, translating rider effort into forward motion with greater immediacy and control.
NEW ENVILIV RANGE | SYSTEM STIFFNESS BY MODEL
Relative to EnviLiv Advanced SL (NEW = Baseline)
FRAMESET TRANSMISSION (N/mm) (PEDALING + FORK)
SYSTEM PEDALING STIFFNESS (N/mm)
SYSTEM CONTROLLING STIFFNESS (N/mm)
What it means: EnviLiv Advanced
HOW EFFICIENCY WAS
Efficiency was evaluated using stiffness-to-weight ratios, which quantify how effectively structural stiffness is delivered relative to mass. This approach captures the balance between power transfer, responsiveness, and overall system weight, making it a meaningful indicator of real-world performance.
By evaluating both frameset-level and system-level stiffness-to-weight, Liv can assess not only the efficiency of the frame in isolation, but how efficiently rider input is translated into forward motion once the complete bike system is considered.
WHAT EFFICIENCY REPRESENTS:
• Higher stiffness-to-weight ratios indicate more immediate response to rider input
• Reducing weight while increasing stiffness improves acceleration and climbing efficiency
• System-level ratios reflect how efficiency is experienced on the road , not just in the lab
ENVILIV ADVANCED SL | EFFICIENCY PROGRESSION
Baseline: Previous-generation EnviLiv Advanced SL
FRAMESET STIFFNESS-TO-WEIGHT RATIO
SYSTEM PEDALING STIFFNESS STIFFNESS-TOWEIGHT RATIO
RATIO
What it means: The new EnviLiv Advanced SL delivers measurable gains in whole-system
into forward motion with greater immediacy and
NEW ENVILIV RANGE | EFFICIENCY PROGRESSION Relative to EnviLiv Advanced SL (NEW = Baseline)
FRAMESET STIFFNESS-TO-WEIGHT RATIO
SYSTEM PEDALING STIFFNESS STIFFNESS-TOWEIGHT RATIO
Why it matters: EnviLiv Advanced SL defines the efficiency benchmark, pairing significant stiffness gains with meaningful weight reduction.
SEAT TUBE ANGLE (DEGREES)
HEAD TUBE ANGLE (DEGREES)
SYSTEM PEDALING STIFFNESS TEST TEST EQUIPMENT:
Fixation Method: Front and rear wheels, as well as the handlebar, securely mounted on the test bench.
Load Application System: Calibrated standard weights (80 kgf / 784.8 N)
Displacement Measurement: High-precision displacement sensor (0.01 mm resolution)
SYSTEM TEST CONDITIONS:
Load Application Point: End of the complete crank system (pedal mounting location)
Crank Angle: 135 ° forward and downward, representing the peak torque phase of pedaling cycle
Frame Inclination Angle: 10 ° , simulating real-world riding posture
System Load: 80 kgf (784.8 N)
Measurement Point: Lateral and vertical deflection (Y/Z axes) at the crank arm extremity
SYSTEM TEST PROCEDURE:
Complete System Assembly: Frame, fork, cockpit, and wheelset are fully assembled to replicate a complete riding system
System Pre-Loading: 50% of the target load is applied for 30 seconds to eliminate initial system clearances
Power Transmission Test: Full 80 kgf load applied and total system displacement measured
System Validation: Test repeated five times, with average values used to ensure consistency, stability, and data reliability
SYSTEM HANDLING STIFFNESS TEST TEST EQUIPMENT:
Fixation Method: Frame rigidly constrained at the bottom bracket, seatpost, and handlebar. A proprietary test jig interfaces with the front wheel at its lowest point
Torsional Load System: Standard weights (5 kg pre-load + 10 kg test load)
Displacement Measurement: High-precision displacement sensor featuring an ultra-high resolution of 0.01 mm.
SYSTEM TEST CONDITIONS:
Load Application Point: Center of the front wheel system (lowest point of the wheel)
Load Direction: Lateral force applied perpendicular to the wheel rim centerline
System Pre-Load: 5 kg (to eliminate system clearances)
Measurement Point: Lateral displacement at the lowest point of the front wheel
SYSTEM TEST PROCEDURE:
Complete System Assembly: Frame, fork, cockpit, and wheelset fully assembled to replicate a complete riding system
System Pre-Loading: 5 kg load applied twice for 30 seconds to eliminate initial system clearances
Handling Stiffness Test: 10 kg load applied and total system displacement measured
System Validation: Test repeated five times, with average values used to ensure consistency, stability, and data reliability
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