BUCKLOS PM/is Front Rear 180/203mm Disc Brake Caliper Mount Adapter Gear Parts Accessories, CNC Machined Aluminum Alloy Rotor Adapter with Bolts

i have ordered a few of these for my bikes and clients. the fit and finish is great. price was also great. love how easy it is to install. got it installation down to under 2 minutes. will be ordering more in the future. shipping was quick and packaged very well. no damage and quality is wonderful. the work great on the bike and look great.

This adapter worked perfectly on my Ibis Ripmo v1. It bolted right on and positioned the caliper for my new 203 mm rotor which was larger than the 180 mm rotor that my bike came with. To be clear I ordered the "PM Front/Rear 203mm" version. There is no documentation so it took a minute to figure out the correct orientation on the bike. I am including a photo of my mount in case it helps others. Overall I found the Bucklos adapted to be a great value, especially compared to the higher cost part from Shimano. I learned a couple of things through the process of identifying the correct part. Originally I ordered the wrong Shimano adapter. This was primarily due to Shimano's poor documentation on their website but also due to a different seller listing a partial part number. Ibis support was great and they confirmed that the part number I needed was SM-MA-F203P/P. The important thing to know is the original rotor size that your frame is designed to use directly mounted without an adapter (sometimes referred to as "native" size). While my bike originally came with a 180 mm rotor, it also had an adapter. Turns out the "native" direct mount size was 160 mm. So this Bucklos adapter was exactly what I needed to run 203 mm on a 160 mm frame.

Worked great for the rear upgrade from 180 to 203mm disc so now 203s all around 😁

Fits the ebike perfectly made it easy to upgrade rotor to 203mm.

This is to upgrade from a 160mm to a 180mm or 203mm. If your bike came stock with a 160, and you want to upgrade to a 180 or 203 get this. If your bike came stock with a 180mm, and you are trying to upgrade to a 203mm, this will NOT work. Ended up returning it because I'm needing to upgrade from a 180 to a 203. In my pictures you can see the pads dont grab the full disc with the spacer. If I set the caliper where it would grab the full disc, the spacer is too big. quality seemed fine. ordered a Shimano SMMA90F203PPM instead to upgrade from a 180 to a 203

Front bracket worked out. Still need cables!

Worked perfectly to add a 203 Shimano rotor to my Trek Session8 DH Bike.

Ordered the IS to 203 adapter. It's 5mm too short for 203mm rotors. The adapter comes with two bolts that have washers attached and 4 additional washers. There are no instructions so it is assumed they intend the additional 4 washers to be used as shims. The washers are too small in diameter for this purpose, sinking into the caliper bolt slot and even with both washers stacked are 3mm too short for a 203 rotor. Dug some 5mm thick rim brake alignment washers out of the parts bin to make it work.