no wider than your steerer tube and no longer than your fingers

Cartridge outer bearings

Bearings are factory filled with Phil wood grease

If your trails are steep and techy or you're riding a big heavy bike these rotors will keep your brakes performing at their best for longer

Hope Pro 5 Front 6 Bolt 15x110mm Disc Hub - Front - 15x110mm Boost - 28 Hole - Red PDP|PLP|Rail Material no wider than your steererBuilding on Hopes 30+ years of manufacturing hubs, the Pro 5 is the combination of all their experience into a product to meet and exceed the demands of current and future bike technology. Features: Sealed Stainless Steel cartridge bearings New hub body profile for increased stiffness without adding weight Standard 6 bolt disc fitting Larger spoke flange to enable stiffer wheel builds Unsurpassed reliability Available in Black, Silver, Red, Blue,