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Stock H.P. On A Pro MXR 90
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Posted by: tmfracing

Does anyone know what the dyno chart looks like regarding stock h.p. @ the rear wheels for a 07' Pro Mxr 90?

What do most Apex National motors produce in horsepower?

Posted by: dodgepower

Its a secret!

Posted by: tireman43

quote:
Originally posted by dodgepower
Its a secret!

I have heard that the Pred. 90 is about 4-5HP stock. The Apex comes with more for sure so I would suspect about 6-7HP or so. I'm no expert on this but an educated guess works sometimes.

Posted by: racinmason911

I've seen stats that read anywhere from 7 1/2 to 9 1/2 hp in stock form for a 90.......

Posted by: wrhracing

Rich Hetrick knows. The tax man ate my Dyno this year.

Posted by: dodgepower

Damm Tax Man!!!!!!!!!!!!!! Ill take care of him for ya so can get it this year

Posted by: #8trx450r

Here is a link to a topic on a DRR 50 that had some testing done AND it also includes a graph of an 07 Apex MXR 90cc bike.

http://www.exriders.com/vbb/showthr...13&pagenumber=1

Man that sux Billy, I had forgotten you told me about that until I just read that, If yuo need anything tested let me know and I'd be happy to try and help ya out anytime.

Corey

Posted by: yfz450ba

I just had my sons 08 mxr 90 lt dynoed at Hetricks, on Wed. I had them install their air box system on it. It put out a little over 9hp, with the box on, they did not do a run with the stock air filter on it, though. I guess add another hp or so. Rich did say that with a head, porting and a crank, he can get aroung 15hp out of the motor.