absoluteBLACK Premium Oval Road 53T Shimano 9100/8000 - Blk CheckoutTitle=Paul Chain Keeper The design for the OSPW

The design for the OSPW RS Alpha isn't solely a visual update

Articulated and removable impact resistant ABS guard

The bit holder can be magnetically attached to any magnetic surface

When speed and precise handling are essential for the race or ride the X1 R delivers with its unique casing and race-tuned technology ensuring you roll to your optimal finish

L3R: Low rolling resistance rubber compound

absoluteBLACK Premium Oval Road 53T Shimano 9100/8000 - Blk CheckoutTitle=Paul Chain Keeper The design for the OSPWCompatibility: Shimano Dura Ace 9100, R9120, R9150 & R9170 Di2 and Ultegra 8000, R8020, R8050 & 8070 Di2, 105 R7000, R7020, R7070. They can also retrofit all 9000 and 6800 series cranks but use bolt covers for best appearance. 10 11 12sp compatible For outer chainring please order "long bolts" from us OR bolt covers. Changing inner chainring to oval only? use original bolts Inner and outer oval chainrings are optimized with smooth shifting in mind