Misplace that rear thru axle We have spares! Lock on your fat rear wheel in preparation for liftoff with the Framed 197x12mm Rear Thru-Axle. Compatible only with Framed brand carbon fat bike frames. Please contact customer service if you have questions about compatibility. * Material: 6061 Aluminum Alloy * Hub Spacing: 197x12mm * Compatible with Framed carbon fat bike frames utilizing a 197mm rear hub spacing.