400ex hybrid

[Trx250rider86]

At first i wanted to convert my 250r to a hybrid, but its going to be so expensive, so i dont know if i can do that... But i heard u can use a 400ex, and make the motor fit with stock frame, what engine should i use. Crf450, yz426f or yzf450( or any others im not aware of) Also does anyone sell motor mounts for that engine so i dont have to customize it? thanks

[ss440ex]

rider86,
There will be some customizing and welding no matter which engine you use.
There are pros and cons to either engines,yz-crf.

[hskers82]

Al(ss440ex) sells a kit for a yz426/400ex conversion.I bought one from him and it is a great kit.As he stated you will have to do some welding and grinding