Which frame?

[hybrid400]

I have a completely done up 400ex with an 03 crf450 in it. I also purchased an 05 trx450 frame, I was wondering some opinions as to wether or not to move some mounts around and put the crf in the trx450 frame...

[strick9racing]

In my opinion there wouldnt be any gain in that. Now if you put that Crf in a 250r frame then ya got a nice quad that handles

[blacknblue#2]

how do you ride?? the trx450 frame is a lot stronger than the 400ex and 250r oem frames especially with a motor that powerful ....I dunno what all your looking to switch over but your current a arms wont work on the 450r frame

[LT250RMan]

Originally posted by hybrid400
I have a completely done up 400ex with an 03 crf450 in it. I also purchased an 05 trx450 frame, I was wondering some opinions as to wether or not to move some mounts around and put the crf in the trx450 frame...

There is a FLP 250R CRF450 hybrid frame for sale on this site for $450. It uses the stock 250r linkage, all you would need is a swingarm fabricated for the crf450 engine.

That FLP frame would be stronger than any oem frame.

[Groves187]

I don't think the 400ex and 250r arms are a direct swap ether. It's close but I'm pretty sure the arms are wider at the chassis mounts and not 100% sure if the shock mount is in the same spot.