The now proven range of Pro2 hubs have gone from strength to strength since they were launched. Countless tests, reviews and of course rider feedback have shown that the Pro2 is everything that we designed it to be. We have a couple of noticeable changes on the hubs now - first one is that they all now run stainless steel bearings throughout, bringing them inline with Pro3. These means longer life, smoother, free running and even more value for money. With the bearing change comes a new axle. The old 15mm axle is now replaced with a 17mm version. This means total compatibility with Maxle and Maxle Lite (reg) 12mm bolt through. This hub features a one piece 7075 aluminium rotor body and pawl carrier. Four pawls engage into a 40 tooth steel ratchet which is fixed into the hub shell and is sealed with a frictionless, non contact labyrinth seal. The axle runs on five cartridge bearings. All Pro2 hubs are standard 6 bolt disc compatible.The hub shell is machined from a solid billet of 2014 T6 aluminium. Part Number: RHPRE32N170QR40T, RHPRE32R17QR40T, RHPRE32GO17QR Barcode: 5055168058030, 5055168058269, 5055168040035 Product Code: HOP H2RF1704