You can determine what hub you have by checking the end caps

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

An ultralight stem cap

Accommodates hub widths from 80mm up to 175mm

Medium Tall: Measures 406

Rockshox Rear Shock Spring - Red - 450lbs - 134mm Metric Images Uploaded - Ready for Review You can determine what hubDial 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