Your riding doesn’t need to stop when the weather gets cold. Features - Giant road thru-axle trainer axle - Alloy construction - For use on 2017+ Giant road bikes with a 142x12mm rear thru-axle

12x142mm thru axles with removable lever for compatible road and gravel bikes

Removable lever for 12mm thru-axles 300000109 (Front) and 300000110 (Rear)

12x100mm thru axles with removable lever for compatible road and gravel bikes

Includes Sram XDR freehub body (12 speeds) and drive side end cap for QR (5mm) or thru axle (12mm). Compatible with all 2021+ SLR 2 Giant Wheelsystem rear wheels