SixWeel 12s Evo Cassette — Steel Series (188 g)
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Product Details
Precision, performance, and endurance — engineered for the WorldTour.
Developed by SixWeel under TiMaster, the 12-speed Evo Series combines aerospace-grade steel, CNC accuracy, and advanced heat treatment for superior shifting stability, strength, and longevity.
⚙️ Specifications
- Model: 12s Evo Steel Cassette
- Weight: 188 g (11-34 T)
- Material: Alloy structural steel + aerospace aluminum
- Technology: CNC machining, heat treatment, sand-blasting, nickel plating, PVD vacuum coating
- Compatibility: HG 11-speed freehub, Shimano 12-speed road & SRAM AXS
- Surface treatment: Stable and standardized production heat process for durability
- Tooth range: 11-12-13-14-15-17-19-21-24-27-30-34 T
- Color options: Super Silver, Black, Ice Berry Pink, Cloudy Blue, Gold Black
🎙️ Interview with Evan — Founder of TiMaster / SixWeel
Q: Your background in cycling and engineering — you’re an engineer yourself, right?
A: No, I’m not. I’ve been riding bikes since kindergarten and mountain biking since I was a kid. I can install and adjust mechanical gear systems like the M965/975. In high school, I won awards in national physics competitions and developed a strong interest in mechanics. At university in the US and Canada, I got into motorsports and amateur racing — designing aero parts, maintaining cars, repairing Aston Martin gearboxes, and welding exhausts.
Q: How many people are involved in TiMaster and SixWeel?
A: Our core team is split into a technical team, a manufacturing centre, and a retail store. The retail store in Hangzhou provides product displays and custom work, while our office in Shenzhen handles development. The manufacturing centre operates CNC and axial machining — it’s not open to the public.
Q: What’s the relationship between the two brands?
A: TiMaster develops high-end bicycle accessories and also works across other industries. SixWeel started in 2021 focusing on traditional road cassettes. TiMaster acquired it in 2024, giving access to higher-hardness, high-strength material processing. Since then, we’ve optimized efficiency, noise, durability, and weight through better material science.
Q: Any future plans you can share?
A: No fixed roadmap yet, but WorldTour feedback shows our quality and performance are strong. We’ll continue to refine materials, treatments, and manufacturing precision — and bring our products to riders globally.
Q: Upcoming products you’re excited about?
A: We’re developing brake calipers, hubs, and full titanium cassettes. Production will remain small because titanium machining is still experimental, but we’re learning fast.
Q: You’re also looking into aluminium?
A: Yes — aluminum behaves differently from titanium, so we use conservative design limits to avoid fatigue fractures. Eventually, we may offer more affordable products using this tech.
Q: You’re into Porsches?
A: I’m a loyal Porsche fan — stable quality, balance, and endurance. I want my products to perform like a 911 GT3 — stable and precise under high intensity.
Q: Final word?
A: From materials to heat treatment, from design to manufacturing precision — our goal is to make your bike look better and help you reach the podium.
🏁 Why Choose SixWeel
- Official debut on the WorldTour — proven race-level performance.
- Dedicated 11 T gear for SRAM chains.
- Split-piece CNC structure improves shift precision and chain retention.
- Monoblock construction enhances stiffness and reduces weight.
- Stable surface treatment and long-term data-driven production process.
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