Bottom bracket for PF30 frames to Shimano Cranks, ideal bottom bracket for Specialized OSBB road frames with Shimano cranks.
- Eliminates the need for adapters.
- USA machined aluminum shell is superior in function and durability to plastic.
- Double lip seals on all bearings with high fill rate of top quality grease
- Threaded design eliminates creaking.
- Dual silicone exterior seal keeps the gunk out for long life