Reliable, durable, effectively reduces rotational inertia.
Sixweel 12-Speed EVO Cassettes
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![Close-up of sixweel 12s EVO cassette]()
Multiple Weight-Optimized Versions
Available in Steel, Half-Titanium, and Full-Titanium configurations to match different riding priorities and performance goals.
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![Close-up of bicycle cassette sprockets with multiple gears in metallic and copper colors.]()
Advanced Accuracy & Surface Treatment
The surface finish accuracy of the finished product can achieve a no-grinding-or-sandblasting-required finish.
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![Close-up of a silver bicycle cassette on a wooden surface.]()
Optimized 12-Speed Compatibility
Compatible with HG freehubs and all 12s systems. (Shimano, SRAM and YBN chain)
A dedicated 11t gear provide for SRAM chains with request.
Unique and Complex Structural Design
Structural Patents: Both sides of 11-16T gears are split piece CNC machined to provide more efficient shifting angles for adjacent gears; single-piece gear design includes washer thickness to increase the contact surface of each gear with the freehub to improve transmission efficiency while preventing damage to the freehub; 17-27T are Monoblock CNC fabricated from steel or special titanium alloys.
Sharp and Smooth Gear Shifting
Materials and Process Updates: Sixweel Evo 12-speed Cassettes have obtained stable processing and heat treatment data by continuously optimizing the processing flow. The above materials can ensure that the processed products meet the design accuracy to the maximum extent. The strength after CNC hollowing can meet the needs of professional competition use, improve durability, reduce the mileage required during the running in period, and have higher durability compared to stamping processes, gears can withstand higher torque.
We use different materials in different areas through calculations and long-term data feedback to achieve a balance of efficiency, stability, corrosion resistance, durability, lightweight, and aesthetics.
Upgraded Compatibility
Upgraded Compatibility:
Sixweel 12s Evo Cassettes are compatible with HG 11s freehub ONLY;
Shimano 12-speed road group set (*Shimano or YBN chain);
SRAM 12-speed AXS road group set(*SRAM flat top chain).
*The new Evo Cassettes will be equipped with a dedicated 11-12t gear for SRAM chains.
Tooth Ratios (Full-Ti 12-speed)
11-30T. 11-12-13-14-15-16T Separate Ti, 17-19-21-24-27T Monoblock titanium CNC, P3: 30T 7075-T6.
11-34T. 11-12-13-14-15T Separate Ti, 17-19-21-24-27T Monoblock Titanium CNC, 30-34T 7075-T6.
11-35T. 11-12-13-14-15T Separate Ti, 17-19-21-24-27T Monoblock Titanium CNC, 30-35T 7075-T6.
Three Versions, Designed for Different Riders
Steel Version — 178–188 g
Durable, cost-effective, ideal for training and all-weather use.
Half Titanium Version — 148–159 g
Titanium monoblock center offers improved stiffness and reduced weight without sacrificing strength.
Full Titanium Version — 118–139 g
Our flagship construction: ultra-light, CNC-sculpted titanium for riders seeking the highest performance-to-weight ratio.
A Product Built to Last — Renewal Program Available
To support long-term use and reduce material waste, Sixweel offers a structured trade-in and upgrade program.
Customers can exchange an older Evo cassette for a new version at a reduced fee, or upgrade between Half-Titanium and Full-Titanium models.
This ensures your drivetrain always performs at its best—while contributing to a more sustainable production cycle.
Specifications Overview
12-Speed Evo Cassette — Technical Specifications
Designed for modern 12-speed road drivetrains, the Sixweel Evo cassette series combines precision CNC machining, optimized material distribution, and competition-proven geometry to deliver consistent shifting performance and long-term durability.
Available Versions & Weights
| Version | Tooth Range | Claimed Weight* |
|---|---|---|
| Steel Version | 11–30T | 178 g |
| 11–34T | 188 g | |
| Half-Titanium Version | 11–30T | 148 g |
| 11–34T | 155 g | |
| 11–35T | 159 g | |
| Full-Titanium Version | 11–30T | from 118 g |
| 11–34T | from 132 g | |
| 11–35T | from 139 g |
Gear Geometry & Construction
P1 — Small Gears (11–15T / 11–16T)
Split-piece CNC-machined gears designed to optimize shifting angles and ensure smooth, predictable transitions.
P2 — Mid Gears (17–27T)
Monoblock CNC construction using structural steel or special titanium alloy to maximize stiffness and torque resistance.
P3 — Large Gears (30T / 34T / 35T)
7075-T6 aerospace aluminum sprockets reduce rotational mass while maintaining structural integrity.
Materials & Surface Treatments
Structural alloy steel
Special high-strength titanium alloys
7075-T6 aerospace aluminum
Surface finishing options:
Sandblasting · Nickel plating · PVD vacuum coating
(Color availability varies by version and production batch)
Compatibility
Freehub:
HG 11-speed road freehub body only
Drivetrains:
Shimano 12-speed road (Shimano or YBN chain)
SRAM 12-speed AXS road (SRAM Flat-Top chain)
A dedicated SRAM-specific 11T gear is supplied to ensure optimal compatibility.
Manufacturing Process
Full CNC machining (split + monoblock architecture)
Optimized heat treatment for strength and durability
Precision-controlled tolerances for consistent shifting performance
Sustainability & Upgrade Program
Sixweel offers a structured trade-in and upgrade program for Half-Titanium and Full-Titanium versions, supporting long-term use and reduced material waste.
For detailed terms, please contact Sixweel or authorized dealers.
Notes
Specifications are provided for reference only and may be updated without prior notice.
Color options and availability may vary depending on configuration and stock status.