Allows the rear axle to be set in two different fore-aft positions 17mm apart | Only compatible with Salsa frames originally sold with Alternator 2.0 dropouts | Compatible with frames featuring 142, 148, 177, or 197mm spacing | Accommodates 12mm thru-axle | Thru-axle tread pitch: 1.5 | Designed for post-mount brake | Replacement for FS2355
UPC: 657993509647