BB30-GXP for Sram GXP cranks Fits a Sram GXP road crank to a 68mm wide BB Shell or a Sram GXP MTB crank to a 73mm wide BB Shell. Choose road bearings for road bikes, cross bearings for mountain bikes and cyclocross. Also for road bikes if you frequently ride on wet roads. CROSS - $199.99 ROAD - $199.99 $199.99 Add to Cart   This product is sold out.