Truvativ GXP XR Bottom Bracket BSA för Tandem svart
Unlike other systems, the GXP system doesn’t place lateral load on the bearing clearance adjustment, rather the left bearing is clamped between the bottom bracket axle and the left crank arm. Thus the right bearing on the bottom bracket axle remains axially free to move. This prevents premature bearing wear.
GXP GXP's dirt seal design reduces friction and weight whilst increasing durability for better feel and performance.