BB-UN300 Square Type Bottom Bracket Softball Bats Fully adjustable belt eliminates bouncing

Fully adjustable belt eliminates bouncing or shifting

Register product with manufacturer for a 10-year extended warranty

Elite 3D gel pads reduce bulk and improve connection to the handlebars

Two lined front pockets

hard water minerals

BB-UN300 Square Type Bottom Bracket Softball Bats Fully adjustable belt eliminates bouncingThe Shimano BB UN300 Bottom Bracket is a quality square type bottom bracket for your standard chainset. Get improved durability and a smooth ride. Cartridge bearing square bottom bracket MTB standard structure Better chain line stability with chain line stabilizer Tourney A070 Series Shimano high quality performance Adapter material: Aluminum Bottom Bracket Shell I. D.: 1. 37 Threaded BB shell width: 68mm BB Frame Interface: English