FOX SLS Coil Rear Shock Spring - 450 lb. x 3.65" / 93mm Stroke Orange Model=X4 Rear Derailleur Integrated under-saddle mount for tools

Integrated under-saddle mount for tools and storage compatible with existing brands of saddle accessories

power is tracked and doubled to estimate total power output no matter where you are crushing watts with lab tested +/- 1% power accuracy

Rear Derailleur Mount Type 10x1 Standard Rear Der/Shifter Compatibility SRAM X-Actuation Color Black Cage Length Long Drivetrain Speeds 12 Chain Wrap Capacity (teeth) 40 Largest Cog 50

allowing you to focus solely on your workout

Specialized Stumpjumper 2016-2017 models require 1 mm of spacers (washers will work) between the frames ISCG05 mounts and the guide (the guide interferes with the frame otherwise)

FOX SLS Coil Rear Shock Spring - 450 lb. x 3.65" / 93mm Stroke Orange Model=X4 Rear Derailleur Integrated under-saddle mount for toolsSLS coil springs are a lighter weight steel spring with a lower un sprung weight to improve performance compared to the standard FOX coil spring. They are also lighter than titanium springs at more affordable prices. The 35 mm 1. 385" Internal diameter also fits DVO MRP and X Fusion shocks. Internal Diameter: 35 mm 1. 385" Lower un sprung weight of the SLS coil spring improves performance compared to the FOX standard coil spring Stroke (ins) 3. 65