Based on customer demand, we have made a short run of these cups to support GG riders in need. 

Upper cup: fits all bikes.

0mm lower cup: for 29er forks only.
For 27.5 forks, order the 0mm lower cup. You will also need a race extender to maintain the stock geometry. 

15mm lower cup: for 27.5 forks only. (No longer available.)

Includes o-ring.