Designed to be a proper BB for installing M30 spindle based cranks in either BB30, PF30, or Specialized’s OSBB frames. Our patent pending design keeps the cartridge bearings outboard of the frame right on Shimano™ spec for greater rigidity and free of frame/c-clip tolerance issues that other systems deal with. Simply press in the longer non-drive-cup, then the shorter drive cup threads into it. As the drive cup threads in, our trademark Collet system expands to a precise limit evenly dispersing pressure for a super tight fit. With both cups connected and our collet set exactly to spec, there is no chance the bearings can come out of alignment or wiggle/walk out of the frame. This design also uses a compressible o-ring on the non-drive side cup to compensate for frame shell width discrepancies. SPECIFICATIONS For M30 Spindle based cranks only. Forged & machined heat-treated 7075 T6 AL Cups Steel cartridge bearings 68mm Road version / 73mm MTB Version For BB86/92, BB30, PF30, and Specialized Road OSBB Aluminium frames Not for BBRight or BB386EVO frames 68mm cannot be used for MTB Cranks MTB Guides -ISCG05 & ST Mounted Good, ISCG03 Not Good BB86/92 frames need to be check with the frame gauge before fitting TECHNOLOGY & NOTES Patent Pending Design “Collet” style non-drive cup expansion for wiggle-free press Non-Drive O-Ring compensates for frame width discrepancies
Visit Product PagePhone:
01642 710232
Email:
info@westbrookcycles.co.uk
Location:
Unit 9 Ellerbeck Way, Stokesley Business Park, Stokesley
Middlesbrough
TS9 7AE
