Please note: Adjusting your B-tension on Eagle derailleurs can be tricky

Valve is made from medical grade silicone

Will suit 12x142mm White Industries XMR rear hubs

Closure: They feature Shimano's speed lacing system for quick and secure adjustments

Medium Tall: Measures 406

Rockshox Rear Shock Spring - Red - 450lbs - 134mm Metric Images Uploaded - Ready for Review Please note: Adjusting your B-tensionDial in your Rockshox coil shock with these metric coil springs. Available in different sizes and many springs rates from 250 650lbs. Set the correct sag and get the most out of your shocks compression and rebound settings for the perfect ride. Who's this item for: Riders looking for a different spring rate on their factory Rockshox coil shock or for riders needing a spring for their aftermarket shock (they do not come included). Compatibility: They