The Wheels Manufacturing 3.5mm Spacer Kit for 61mm Specialized OS Carbon Frame widens 61mm wide Specialized Carbon OSBB frame BB shells for use with Pressfit 30 bottom brackets. Place one 3.5mm BB cup spacer between each bottom bracket cup and the frame when installing the bottom bracket. Additional crank spindle spacers are included to fine-tune any crankset fitment play, and these spacers are machined from engineering-grade Delrin.
- (2) - 3.5mm bottom bracket cup spacers (46mm ID)
- (4) - .5mm crank spindle spacers (24mm ID)
- (2) - 1.0mm crank spindle spacers (24mm ID)