Upgrade your 11-42T Shimano cassette to a wider ratio with Superstar UK made XPR50 (X-sPander-Ring) upgrade ring. The Shimano specific 50T sprocket has been designed to exactly fit the Shimano XT M8000 and SLX M7000 cassette design. The kit includes a custom made stainless 18T ring to smooth out the ratio curve of your new upgraded cassette. We recommend a long cage rear mech to allow for the chain growth or a aftermarket extension cage (Superstar XPR cage is coming soon):
Designed and CNC machined from 7075 T651 aluminium in our own facility in the UK. By manufacturing products with the highest quality machinery, we can offer market leading quality for amazing value.
Suitable for 11 speed chains only
Shimano version compatible with:
XT (M8000 11-42) - 11spd cassettes
SLX (M7000 11-42) - 11spd cassettes
We do not recommend short/medium cage mechs as they may not have enough chain capacity to cope with large rings and chain growth. You must test at extremes of suspension travel and gear ratio before using, to confirm your installation is safe. X-Long b-tension M4 screw may be needed in case you require more adjustment.