I was wondering what parts between the trx 250r, and the atc 250r are interchangeable. I have seen many 250r power kits, labeled trx, could i put them on an atc? I really want to know about engine parts, but if you could give a complete list of interchangalbe parts, i would be very thankful. I have a atc 250r 1985, if you would use that as your atc for comparison it would be great. thank you

 

All of teh engine parts from the 85-86 atc250r will swap with the trx250r. Same motor different frame. The stator will swap bit the rest of the wiring is different on the 85.

 

thank you so much
this helps alot

 

Buy a manual i have a Clymer and think it's great(i got it online for like 30$ and it took 2-3 days shipping). They will break down 85-86 ATC 250R's and 86-8X 250R quads. The 86 seems to share more than the 85 but all MAJOR modifications are interchangable. When were talking about big bores youll need to specify its a short rod 85 ATC 250r which shares the short rod 86 TRX engine aftermarket. personally i favor the short rod engine for the rod to stroke ratio being perfect for minimal side-wall loading which in short equals better reliability.

 

Power kits usually come with pipes and pipes on the TRX and a ATC are totally different and that is the only difference i see.

 

i was thinking about getting a clymer manual, your recomendation helps alot, thanks

 

I have a clymer manual and it has helped me alot on my 200s