Old Man Mountain

Rear Fit Kit, SET821.S 12mm,1.75x164-167mm

Old Man Mountain Rear Fit Kit, SET821.S is the hardware package that makes an Old Man Mountain rear rack install clean and secure on bikes using a 12mm rear thru-axle. Built around a matched thru-axle plus a seatpost mount, it creates the correct mounting points for stable cargo rack support without guesswork on fit.

• 12mm thru-axle fit - Sized for bikes that require a 12mm thru-axle with 1.75 thread pitch and 164–167mm axle length for proper rear rack mounting
• Complete mounting system - Includes thru-axles, seatpost mount, and required hardware to streamline installation and reduce parts hunting
• Rack-ready interface - Provides the secure attachment points needed to run an Old Man Mountain rear cargo rack on compatible frames
• Designed and tested in Bend, Oregon - Purpose-built fit kit engineered for real-world rack loads and day-in/day-out reliability