Replacing 300RR Rear Caliper

[602]

I have managed to destroy my rear caliper on my 2015 300RR. Long story short, there is some scarring near the cylinder where the caliper piston slides in and out. I had thought I could salvage the situation by replacing the piston and the seals. The seals held pressure for anout an hour and a half today. After that, brake fluid was leaking and and I had lost all pressure on the pedal.

I'd like to get a new calipered ordered ASAP so I can be riding later this week. I need some help determining cross reference of this caliper to other bikes. I've searched this forum and didn't get a concrete answer so I decided to create a new thread.

Is the rear caliper on the Beta the same rear caliper as that of the ones found of Japanese bikes? I use OEM Kawi pads for the rear so, I suspect yes. Here's whats interesting though, when I peruse Rocky Mtn ATV's OEM Parts catalog I am comparing the rear caliper from the Honda to the Kawi part. Honda shows as $146 while Kawi shows as costing $168. If they are the same caliper, why the difference in OEM cost?

[S.O.A.N.Z]

All these are the same if thats any help

Part # 2503066000

BRAKE SYSTEM (RR 2T 250/300 Racing) (2015)
BRAKE SYSTEM (RR 4T 350) (2011)
BRAKE SYSTEM (RR 4T 400/450/520) (2010)
BRAKE SYSTEM (RR 4T 400/450/520) (2011)
BRAKE SYSTEM (RR 4T 350 EFI) (2015)
BRAKE SYSTEM (RR 4T 350/430/480 Racing) (2016)
BRAKE SYSTEM (RR 2T 250/300 Racing) (2016)
BRAKE SYSTEM (RR 4T 350 Factory) (2014)
BRAKE SYSTEM (RR 400/450/520 Factory) (2011)
BRAKE SYSTEM (RR 4T 350/390/430/480) (2016)
BRAKE SYSTEM (Xtrainer) (2016)
BRAKE SYSTEM (RR 4T 390/430/480) (2015)
BRAKE SYSTEM (RR 4T 350/430/480 Racing) (2015)
BRAKE SYSTEM (RR 2T 250/300) (2015)
BRAKE SYSTEM (RR 2T 250-300) (2016)
BRAKE SYSTEM (Xtrainer) (2015)
BRAKE SYSTEM (RR 2T 250/300 Racing) (2014)
BRAKE SYSTEM (RR 2T 250/300) (2014)
BRAKE SYSTEM (RR 4T 350/400/450/498) (2014)
BRAKE SYSTEM (RR 4T 450/498 Racing) (2014)
BRAKE SYSTEM (RR 2T 300 Racing) (2013)
BRAKE SYSTEM (RR 4T 350/400/450/498) (2013)
BRAKE SYSTEM (RR 4T 350/450 Racing) (2013)
BRAKE SYSTEM (RR 2T 250/300) (2013)
BRAKE SYSTEM (RR 4T 350/400/450/498) (2012)
BRAKE SYSTEM (RR 4T Factory) (2012)
BRAKE SYSTEM (RR 4T Cross Country) (2012)

[David C]

Used yamaha pads on mine, pretty sure it was a 2014 and up yz250f.
Honda pads are different. Pretty sure not honda calibers.

[dirtbird]

Hondas Nissin caliper is using smaller pads but I have never checked if it fits, probably not. 

Most critical dimension is the distance between the two sliding pins. 

You better take out your damaged caliper and compare it physically to a Yamaha, Kawasaki or Suzuki caliper. 

 

[NW_drZ]

15’ YZ250fx brake pads on the top, 17’ Beta 250rr on the bottom. The Betas are noticeably bigger. I’m not sure if the pin holes line up between the two.