The Crankbrothers Synthesis Enduro 11 Carbon tuned wheel system is designed to provide ultimate control and stability for enduro and aggressive trail riding and racing. Rim design, spoke gauge and spoke count are formulated specifically for the front or rear wheel, providing compliance up front and stability out back. Our tuned concept provides unparalleled directional control and predictable handling, while also muting harsh chatter and buzz - a recipe for all-day performance without compromise. Details: Tuned Front and Rear Carbon Wheel System for enduro and trail riding. Front and rear specific wheels tuned and optimized to address the specific performance requirements and loads of mountain bike riding. Compliant tuned front wheel improves handling and maximizes grip and control in turns. Stiff tuned rear wheel supports peak loads and enhances stability and tracking at speed. Rims covered by lifetime warranty.