Crankbrothers Synthesis Enduro Carbon 29" Wheel Tuned for control. Built for enduro. The Crankbrothers Synthesis Enduro Carbon wheel system is built around a tuned front-and-rear concept - each wheel designed specifically for the performance demands of its position on the bike. The rear wheel features a reinforced carbon rim profile and layup for added stiffness and stability under peak loads, with a 29. 5mm internal width for a fast-rolling tire profile and superior impact resistance. The front rim is built for control, with a 31. 5mm internal rim width and a more compliant carbon fiber layup where it's needed most. The Industry Nine 1/1 hub delivers 4deg engagement via a dual phased-pawl mechanism, and Sapim Race spokes provide the durability the wheel demands. Features Tuned rear-specific carbon rim reinforced rim profile and layup delivers additional stiffness, stability, and impact resistance when loaded hard into corners Rear 29. 5mm internal width provides a fast-rolling tire profile optimized for pedaling efficiency Front rim tuned for compliance with a wider, 31. 5mm internal rim width to create a wider tire profile, and a more compliant carbon fiber layup Industry Nine 1/1 hub with 4deg engagement via dual phased-pawl drive mechanism - quick, reliable engagement in an anodized black finish with laser-etched logos Sapim Race spokes hand-selected for the rear wheel's stiffness and durability requirements SPECIFICATIONSHub Industry Nine 1/1Hub Type6-Bolt Engagement4degInner Rim Width29. 5mm Outer Rim Width36. 5mm Rim Height18mm Spoke Count32Spokes Sapim Race Weight1, 035g (27. 5) / 1, 145g (29)Warranty Lifetime (rim only) | Crankbrothers | Synthesis Enduro Carbon 29" Wheel Rear 12X148 6B Xd