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2000 honda trx90 fourtrax upgrades


Aj Hurtibise

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TRX90 is about like most of the little honda motors.  Slip on exhaust, Rick's CDI, polish the head.  You can twist a little more power and a little more rev out of them but it's not going to be night and day.  It'll perk up a bit with a good tune up including carb clean and new NGK plug and slip on exhaust like Big Gun, FMF, etc.  You can also look into a size smaller rear tires to drop the gearing just a bit so you can pop the front up a little more.  They'll never really fly but they're fun anyway.  There is a whole market for the ATC70 as a toy like the TRX90.  Just fun to play with little bikes.

Really depends on how much money you want to spend.  There's even a 106CC big bore kit....

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You'll just have google what you're looking for and read some reviews.  In ATV parts there are chinese junk parts, chinese decent parts, OEM, japanese aftermarket.  Quite a few options, just have to do a bit of legwork.  If it looks really cheap (like $60 for a cylinder, rings, piston and gaskets) stay away from it.  Same with consumable parts like chains and sprockets; there's a reason the pretty red chain is only $16. 

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