Guerrilla Gravity Geo-Adjust Headset Cups

Description Based on customer demand, we are doing a short run of these cups to support GG riders in need. Pre-order is required to ensure the correct quantities are ordered.  ETA for arrival to our warehouse is 7/22/25.  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.