Mountain bikers, this Shimano XT bottom bracket is exactly what you need for your press fit frame. The 89.5x92mm dimensions work with Shimano's HollowTech II cranksets, giving you that smooth, reliable performance Shimano is known for. It's completely maintenance-free with sealed cups that keep dirt and water out of your bearings - super important for trail riding where you encounter mud and water. The set includes both left and right cups, a 2.5mm spacer, inner cover, and O-rings so you have everything for installation. The black finish looks clean and works with most bike color schemes. Whether you're replacing a worn-out bottom bracket or building up a new bike, this XT level component offers great performance without breaking the bank. Much better than dealing with creaking or rough-spinning bearings ruining your ride. Get back to smooth, quiet pedaling with this quality bottom bracket.