Trying to adapt my post mount brakes to a flat mount bike (sram level – trek checkpoint ALR 5).
Bought TRP adapters that came with m5 and m6 bolts. front mounted up without a problem, fits 160mm rotors perfectly but I'm struggling with the rear.
The frame doesn't have threaded holes on the chainstay so the m5 bolts that are supposed to attach the adapter don't thread into anything. The holes lineup with the adapter but I'm not sure how I'm supposed to fix them to the frame.
Holes go all the way through the chain stay.
by Rippin_Fat_Farts
3 Comments
What you have is FM type brake frame and PM adapter. These two won’t work together
Edit: Nvm, you screw it in from the bottom
Threads are in the adapter, the screws should be inserted from the bottom.
Screws go from the underside of the frame and into the adaptor. Possibility you might need longer screws unless you got some more with your adaptor.