what year is my mxz 670 and hp?

[happyfast79]

i have a 670 mxz and was wondering what year it could be and how to tell.
the engine has powervalves, and some body put jaws twin pipes on it (i didnt know jaws made pipes for doo, and also what horsepower did these sleds put out, thx for any info

 

[teeroy]

if it has the stock decals it would be easy, the first year ('96 1/2) had green on the decaling, the '97 had black and red decals, the '98 had a lot of white on the decals (and different steering system, rack style I think), the '99 was the last year and was the 670HO and decals were purple. the pre HO models were 118hp I think, the HO was at around 128hp. the HO was a sweet mill, I had one for 278kms when it was totalled on a rock in Tumbler Ridge BC.

 

[H20SKE]

And as far as the twin JAWS pipes---They are the best pipes made for that 670 motor--I have played with others--and the JAWS just plain ole work on these motors.

H20SKE...