| l  Rear 4 sealed bearings, 3pawl、51 tooth l  Japan bearing for ultra-durability and smoother. l  For Shimano 9, 10 Speed system    Highly recommended~ It’s your best choose to upgrade to light weight hubs. (F&R, only 270g) For Shimano 9, 10 speed system It's super lightweight Hub, Front hub just 70g only, and 200g for Rear.     PCD: F 31mm / R 49mm Flange to flange: F 63mm / R 49mm Center to Flange:  F32.5mm/32.5mm R:16.5mm/28.5mm O.L.D:100mm / 130mm 
 This Hub set uses 51 engagement teeth on each drive ring. That means the hub engages over 2.125 times quicker than the standard 24 tooth pawl-type freehub.
 
 Hard Anodizing freewheel body(more durable than alloy body, about 1:2) 
 Shimano: 8, 9, 10 Speed system Campy: 9,10,11 Speed system |