Box Two Alloy External Bottom Bracket Color:Red MATERIAL 4130 CrMo

MATERIAL 4130 CrMo

Ratcheting Fly closure allows for adjustability and positive closure for a secure fit

20 x 1-3/8: 12

Kevlar top cover with "fat" thick padding

This is the perfect spindle to replace the 8-spline that came stock on your BMX Bike equipped with 3-piece OEM cranks

Box Two Alloy External Bottom Bracket Color:Red MATERIAL 4130 CrMoThe Box Two Alloy External Bottom Bracket is a great upgrade for your bottom bracket and will work with all 24mm spindles and frames with 68 or 73 x BC 1. 37 inch bottom bracket shells. Featuring machines alloy cups and precision sealed bearings. FEATURES Forged CNC Machined Alloy Cups High Impact Anodizing 24mm Outboard Bearings ABS Plastic Sleeve Precision Abec 5 Sealed Bearings SPECIFICATION COMPATIBILITY: Box Three, Box Four, Shimano HollowTech