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Sixweel 12-Speed EVO Cassettes (Steel Version 178g-188g)

$450.00

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:
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.

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.

Available Weights and Ratios:

12-speed Evo Steel version 11-30T 178g, 11-34T 188g;

In Stock item ships out in 1-3 business days. Pre-Order item ships out in 2 weeks.

Compatible Groupset:
Material:
Color:
Ratios:

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:
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.

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.

Available Weights and Ratios:

12-speed Evo Steel version 11-30T 178g, 11-34T 188g;

In Stock item ships out in 1-3 business days. Pre-Order item ships out in 2 weeks.

Precision-machined for smooth, reliable shifting, the Sixweel 12s Evo cassette combines optimized tooth profiles, structural upgrades, and advanced surface treatments. Split-piece CNC gearing ensures crisp transitions in the 11–16T range, while the monoblock design of 17-27 can reduce overall weight.

*Spare parts are available for each gear.

Compatible with HG 11s freehub. Compatible with Shimano 12-speed and SRAM AXS systems (will be equipped with a dedicated 11-12t gear for SRAM chains), this lightweight cassette delivers pro-level performance in a refined, accessible package.

Gear Geometry & Construction

P1 — Small Gears (11–15T / 11–16T)
Split-piece CNC-machined steel alloy gears.

P2 — Mid Gears (17–27T)
Monoblock CNC construction using structural steel alloy to maximize stiffness and torque resistance.

P3 — Large Gears (30T / 34T)
7075-T6 aerospace aluminum sprockets reduce rotational mass while maintaining structural integrity.