Distinctly modern and angular design- Design brings balance and refinement to the OSPW System allowing it to blend seamlessly into the contemporary design trends of bikes and groupsets- Injection molded carbon fiber reinforced PA cage offers high levels of strength and durability- Grade 3 silicon nitride ball bearings are 400% smoother, 128% harder and 58% lighter than standard steel balls normally used in the bicycle industry- Customizable spring tension settings for optimal setup- Available with ALPHA disc pulleys featuring ADR bearing protection or alloy 5-spoke pulleys and standard handbuilt CeramicSpeed bearings- ALPHA disc option available with an oversized logo, designated as Team Edition- 4-year warranty on 5-Spoke. Lifetime warranty on ALPHA