Wolf Tooth "BSA" MTB Bottom Bracket

The Wolf Tooth "BSA" MTB Bottom Bracket is the Wolf Tooth BSA bottom bracket for 68 and 73 mm threaded shells, machined and assembled in Minnesota. The bearings are a custom design: balls and races from hardened chrome bearing steel (AISI 52100), which is harder than stainless and spins with less resistance, plus an ACOSUR ZNA coating that resisted corrosion at least as well as stainless in a 500 hour salt water test, and Wolf Tooth gives a lifetime warranty on them. Seals and polymer spindle bushings keep water and mud out and stop creaking. The adjustable sleeve fits 68 and 73 mm, sleeves for 83 and 100 mm are available as add-ons. Spindle spacers and two 2.5 mm shell spacers are included. Installs with standard tools: 44-16 notch for 24 mm, 46-12 for 29 mm. 83 g (24 mm) or 87 g (29 mm) according to the manufacturer, every part available separately via Right to Repair.

Facts: Wolf Tooth "BSA" MTB Bottom Bracket

Material: cups 6061-T6 aluminium, sleeve glass-filled nylon, seals NBR/EPDM/urethane, bearings AISI 52100 chrome steel hardened (Rc 60-66) with ACOSUR ZNA coating
Style: BSA threaded (1.37" x 24 tpi), external bearings
Axle Diameter: 24mm, 29mm or 30mm
Shell Width: 68 and 73 mm with the included adjustable sleeve (83 and 100 mm with the add-on sleeve)
Bearings: Wolf Tooth cartridge bearings, hardened chrome steel, ACOSUR ZNA coated, lifetime manufacturer warranty
Distance Tube: adjustable internal sleeve 68-73 mm
Scope of Delivery: 1 bottom bracket, 2 shell spacers 2.5 mm, spindle spacers (24 mm: 2x 0.5, 2x 1, 2, 3, 5 mm; 29 mm: 2x 0.5, 2x 1, 3, 5, 7.5 mm; 30 mm: 2x 0.5, 2x 1, 2, 3, 5 mm)
Extras:
- polymer spindle bushings against creaking
- installs with 44-16 (24 mm) or 46-12 (29 and 30 mm) bottom bracket tools
- weight 83 g (24 mm), 87 g (29 mm) or 82 g (30 mm) without spacers, manufacturer
- spare parts and service guide from the manufacturer (Right to Repair)
- made in the USA