Shimano Post Frame Or Fork To Post Caliper Brake Mount
Post to post brake mount to mount your caliper for a rotor size, dependent on what rotor you have, and what your fork/frame has as standard.
F 160-180mm - R 140-160mm 160-180mm: 20mm adaptor. Accommodates 180mm rotors on a 160mm post mount fork or frame. Includes required hardware
F 160-203mm - R 160-203mm: 40mm adaptor. Adapts post mount 160mm forks or frame to run a 203mm brake rotor.
F 180-203mm - R 180-203mm: 20mm adaptor. Adapts your post mount 180mm frame/fork to be able to run a 203mm brake rotor.
If there is an adaptor, but it bolts to the frame from the side, then it's an IS mount, and you'll need a different adaptor.
For IS mount frames, click here
Ratings & Reviews
Good quality as expected from
by Ruksta -
Good quality as expected from shimano and perfect fit with plenty of adjustability with the supplied washers and bolts.
Nicelly made although careful not
by Gerard -
Nicelly made although careful not to overtighten the bolts as they are quite a soft alloy and strip easily. Also works for adapting 140mm rear post mount to 160mm (what I'm using it for).
What can I say? It
by humptydumpty -
What can I say? It does the job perfectly!
180mm to 203mm brake rotor adapter
by Troy B. -
No issues fitted straight on fast delivery
Mine was used on frame on the rear
203 rotor adapter
by Jim S. -
Seems fine, does what it's supposed to. Seems better finished than the SRAM adapters.
Bike came with 180mm front
by Tezza -
Bike came with 180mm front and 160mm back rotors and under some tracks I notice them feel off after they warmed up. Switching to 203mm on both made the lever force easier and no heat problem on long decents. Super happy!