Sturmey Archer RS-RK3 is a 3-speed disc brake rear hub with a wide 177% gear ratio. Gear steps of 33% and 33% with a rotary gear selector without protrusions outside the frame.
6061 Aluminium hub shell
Anodized alloy finish
Compatible with 17 to 19 tooth sprocket
Specifications
Brake Type
6-Bolt Disc
Color
Silver
Defined Color
Silver
Number of Speeds
3
Spoke Count
32
Spoke Interface
J-Bend
Weight
1095
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Was waiting for quite some time for these to come back in stock and quickly pulled the trigger. Laced these to a 27.5 32h rim 32mm ID rim and 27.5x3 Teravail Coronados. Have about 5mm of clearance for the chain. Laced up fine with 2.0/1.8 spokes. I've been running single speed but just wanted a few more options but still wanted a clean single speed look. Will need to play with the Cones as they're is some drag while I was trueing these. Once on the bike there's a pretty extreme amount of engagement slack. Mind you it's no I9 or DT hub with instant engagement but a 3 pawl hub is still light-years ahead of this. Feels like a 1980s Huffy BMX bike with a coaster hub. So just a heads up if your anal with stuff like that. Finish is a nice machined silver color. Plus with the rotary style gear mechanism you don't have the cable that comes out the end of the axle like typical old 3spd hub and makes wheel removal a breeze.