For the XX1 spider

designed and engineered to perfection

If you are currently running the same cassette range now you shouldn't require a longer B-Tension bolt

This kit only works with the following 32 and 34mm dampers:

2014 and current versions of Crank Brothers Wheelsets

OneUp Components Switch Spider - SRAM Direct Mount - 6mm Non Boost - Black PLP|EMTB Optimised For the XX1 spiderDesigned to save you money and make ring selection easy! With so many different 'standards' on the market today, finding the correct ring can be a chore. OneUp's new Switch system solves all these annoyances and makes ring replacements easy. The Switch system is a spider ring combo (rings sold separately) that replaces your standard direct mount ring. Each Switch spider is available in the common direct mount options and available in different