Surly Rear Thru-Axle - 12x197 mm Chromoly Black Model=Trainer Axles and QR 5" front/rear rear (XDR) rim

5" front/rear rear (XDR) rim Proterra Tough i30 hub Proterra axle/spacing (mm) 12x148 Boost hole 32h spoke DB nipple brass color black weight 1076g

OCP direct mount rings allows the rider to configure to their optimum chainring position for maximum power transfer

Tire Type Clincher Bead Folding e-Bike approved Yes Tire PSI 35-70 Tire Width Range 39 - 50 Labeled Size 700x50C Tire Technology DD V-Guard TPI 67TPI Tire Diameter/ISO 700C/622 Primary Color Black Tire Weight 825g Tire Compound TravelStar Tire Width 50C

Bottom bracket cup and spindle spacers for adjusting chainline or bearing play

Internal dropper seatpost routing with 30

Surly Rear Thru-Axle - 12x197 mm Chromoly Black Model=Trainer Axles and QR 5" front/rear rear (XDR) rimLow profile bolted Thru Axles are specifically designed for use with Surly thru axle compatible frames. Color Black Weight 80 Thread Pitch M6x1. 0 Thread Length (mm) 25 Axle Diameter (mm) 12 Over Locknut (mm) 197 Overall Length (mm) 209