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

It fit on my E bike, allowing me to go from a 160 to a 203 mm front disk rotor. This thing feels every bit as tough as the OEM caliper mount. The only adjustments were a couple small washers (spacers), most likely due to the rotor type I chose. So far, the mount is stable. The brakes work well, nothing has come loose. All is well. (Blue thread-locker, use it)

Everything seems to be fine quality and working great on my bicycle

Unfortunately I had to return it since it did not work on my fork. I wish it did, I loved the look and feel of it.

Simple, but good quality.

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

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.

IS 180 is not the correct size. It does not space the caliper far enough out to properly fit a 180 rotor on the rear of an IS frame. I am unable to get the axel inserted as the brake caliper is hitting the rotor and preventing the wheel from being installed... it's not even close. Do not waste your time with this and get the Shimano mount.

Worked well for using on GT73 rear brake upgrade.

Bought Is Front for 203mm and it just doesn't fit a 203mm rotor...