Upgrade Bracket Kit - Small to Large

Fits most 24" - 29" Bikes Supports rider up to 150 lbs. Wheels can be adjusted up as the rider gains balance Will work on Coaster or Multi-Speed Bikes Will not work on bikes with quick disconnect rear wheels, rear wheel suspension or on folding bikes Will not work on bikes equipped with a Nexus Shifter With FATWHEELS installed, the rear of bike will measure approximately 29" wide Fits bikes with 3/8" axles and includes (2) 3/8"-24 tpi (threads per inch) and (2) 3/8"-26 tpi axle extender kit. Will work on 10mm axles (without axle extenders on coaster brake bikes) Can be used on 14mm axles (without axle extenders on coaster brake bikes) by drilling bracket hole to size.