Are they the same ?

[CHAUNCY]

I was wondering if a rear brake rotor is the same on a 250r and a 400ex. I am asking this because I need one for my 250r and if a 400ex will fit it would help me out in finding one. Does anyone know if they are interchangeable ?

[toby400ex]

I think the 250r rotor is a lot smaller, some people use a 250r rotor on their 400ex, but it reqires a different caliper mount i think

[terko440]

Toby is right. And I believe people do it for slightly more ground clearance and I'm not sure if the braking is any better.

[Sick0]

Its is smaller. a diffrent caliber, diffrent caliber mount, And I'm not sure but I think you have to uses a diffrent braking hub.