I own 2 bikes: A marin muirwoods and a Btwin rockrider 520.
They both have m5 rear rack mounts below the saddle (m5 bolts screw in easily). But on both bikes the rack mounts by the rear wheel are a different size. The m5 screws seem slightly too big and won't go in. Are these even rack mounting points?
Any ideas what i could try? Trying to mount an Ortlieb Quick Rack.
by JeremyWheels
2 Comments
M4 usually
M5 is most common for bicycle rack, mudguard and bottle cage mounts. Usually use a 4mm hex key which is why people think they are M4.