Wheels Manufacturing PressFit 30 Thread-Together Bottom Bracket ZERO Ceramic Bearings BLK MFPN=CK20EA90129ARM175BLK model Driver Pro size 29"

model Driver Pro size 29" width 2

Optional shim washers if needed

Chainline 49mm (standard)

Recommend the use of a clutch style rear derailleur for the best chain security

Wheels Manufacturing PressFit 30 Thread-Together Bottom Bracket ZERO Ceramic Bearings BLK MFPN=CK20EA90129ARM175BLK model Driver Pro size 29"Wheels Manufacturing PressFit 30 Thread Together Bottom Bracket with ZERO Ceramic Bearings Black. PF30 Thread TogetherReplaceable Enduro bearings Made in the USA TECH SPECS Bottom Bracket Shell I. D. 46 BB Frame Interface PF30 BB Frame Interface 386 EVO BB Shell Width (mm) 68 BB Shell Width (mm) 73 Weight 114 Spindle Interface Type BB30 PF30 Defined Color Black