Shimano Post Frame Or Fork To Post Caliper Brake Mount
Post to post brake mounts allow you to run your brakes with a different sized rotor. The model you need depends on what size post mounts your fork/frame has, and what size rotor you want to run.
Ultimate adaptors are XTR level and use a lighter alloy with more cutouts to save a couple of grams in weight.
F 160-180mm - R 140-160mm 160-180mm:
- +20mm increase
- Allows for 180mm rotors on 160mm post mounts.
F 180-203mm - R 180-203mm:
- +23mm increase
- Allows for a 203mm rotor on 180mm post mounts.
F 160-203mm - R 160-203mm:
- +43mm increase
- Allows for a 203mm rotor on 160mm post mounts.
- Fits via 4 bolts with the caliper offset
F 203-220mm: SM-MAF220P/PL
- +17mm increase
- Allows for a 220mm rotor on 203mm post mounts.
F 200-220mm: SM-MAF220P/PL2
- +20mm increase
- Allows for a 220mm rotor on 200mm post mounts.
Not sure how to decide which adaptor you need? Check out our blog post on How To Choose The Right Brake Mount.
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
Customers Also Viewed
Reviews
Easy to install
by Aaron Markie
Easy to install, I've upgraded a number of bikes using these adapters. Just read carefully to ensure you get the right one.
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.
Ratings & Reviews
20 reviews
Easy to install
by Aaron Markie
Easy to install, I've upgraded a number of bikes using these adapters. Just read carefully to ensure you get the right one.
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.
Specifications
| Item | Barcode |
| Shimano Post Frame Or Fork To Post Caliper Brake Mount | SHMPTPBRKMNT |
| F 160-180mm - R 140-160mm 160-180mm - MA Advanced Level | 4524667295846 |
| F 160-180mm - R 140-160mm 160-180mm - MA90 Ultimate Level | 4524667595571 |
| F 160-203mm - R 160-203mm - MA Advanced Level | 4524667108115 |
| F 180-203mm - R 180-203mm - MA Advanced Level | 4524667887416 |
| F 180-203mm - R 180-203mm - MA90 Ultimate Level | 4524667887430 |
| F 200-220mm - MA Advanced Level | 4550170897819 |
| F 203-220mm - MA Advanced Level | 4550170897789 |