Sturmey Archer: S3X Fixed Gear Internal 3 Speed Wheelset Description: Here is the wheel set that everyone’s been waiting for! It’s the much anticipated Sturmey Archer S3X Three speed fixed gear hub coupled with the bullet proof Alex sub rims. This S3x hub features 3 speeds. First gear is minus 37.5 %, Second gear is minus 25 % and third gear is direct drive. All of them FIXED. Incredible! Gear changing is accomplished with a SA indexed Bar End shifter. Clean and sanitary. This package includes a front wheel, rear wheel, 16t 1/8 cog, shifter, cables and cable stop. Everything you need to make your fixie more usable and more fun to ride. NOTE: This is not a zero lash hub. There is a small amount of play between acceleration and deceleration. S3X Rear Hub Specs: Speed: 3-speeds Type: Fixed Gear Hub Shell Material: 6061 Aluminum Axle Diameter: 13/32″ Axle Length: 170 mm Rear Spacing: 120 mm Spoke Holes: 36 Flange Width: 53.4 mm Chainline: 46.0 mm Gear Ratio 1: – 37.5% Gear Ratio 2: – 25% Gear Ratio 3: Direct Drive Wheel Specs: Rim: Alex SUB Rim Size: 700C X 18MM Clincher Profile: 30mm Material: 6061 T6 Aluminum Type: Double Wall Finish (Color): Black Braking Surface: CNC Machined Sides Valve Hole: Presta 6.5MM Spoke Material/Type: Stainless 14g Spoke Count: Front: 36 Rear: 36 Lacing: Standard 3 cross front, 3 cross rear Nipple: Brass, Gold Plate Finish Front Hub Material: High Flange 6061 Aluminum Hub Finish: Matt Black Shifter: Sturmey Archer SLS3X – B Shifter Type: Indexed Bar End Mount