Gineyea Square Tapered Bottom Bracket 103/107/110.5/113/118/120/122.5/124.5/126mm Bicycle

The Gineyea BB68 Square Hole Bottom Bracket is a durable, sealed-cartridge unit designed for gear-shifting, fixed-gear, mountain, and road bikes. Built with a high-strength carbon steel axle and an aluminum alloy shell, it offers improved transmission efficiency, corrosion resistance, and long service life. Available in lengths from 103mm to 126mm, each bracket includes sealed bearings, an activity locking cover, and dust-proof screws for reliable, low-resistance performance. Clear left/right markings ensure easy installation, making it a stable and long-lasting choice for a wide range of bikes.