The Hope Pro 4 Rear Hub is the next generation of Hope hubs. Featuring an unbeatable combination of bomb-proof reliability & race-winning performance. Featuring sealed stainless steel cartridge bearings and machined from forged T6 Aluminium billet. Hope Pro 4 Rear Hub Features 4 Pawl Ratchet with 44 tooth engagement (8.2 deg) Standard 6 bolt disc fitting Larger spoke flange to enable stiffer wheel builds Unsurpassed reliability Aluminium or steel freehub body options Conversions available for QR, 10mm bolt in, 10mm, 12mm and 142x12mm thru axles Supplied with freehubs to suit 10/11spd Shimano, Sram XD or Hope cassette Weight: QR - 311g, 142mm - 300g