Piston BSA External Threaded Bottom Bracket - 28.99mm DUB - BSA Threaded - 68-73mm Shell YGroup_7033443811373 high-speed impacts while the softer

high-speed impacts while the softer EPP inner shell is there to deal with low-speed impacts

Required for Lever Internals installs on SRAM Guide Brakes

​Does not fit SRAM Guide RE brakes

Helmet Carry: Stow and secure helmet

Piston BSA External Threaded Bottom Bracket - 28.99mm DUB - BSA Threaded - 68-73mm Shell YGroup_7033443811373 high-speed impacts while the softerThe Piston BSA External Threaded Bottom Brackets feature high grade bearings and precision engineering at a wallet friendly price point. Style: BSA External Threaded (English) Shell width: 68 73mm Spindle size (diameter): DUB 28. 99mm Bearing style: Sealed Bearing cup shell material: Threaded alloy cups Installation tools: 12notch M30 Standard Tool required Removal tools: 12 notch, 48mm OD tool to suit Praxis M30 such as the Park BBT 35 or Praxis M30