I never do my motors.. I have found makeing the bike handle
you also make it faster... Cornering speeds faster so the stright line speed between the corners is faster also..
If its a dirt bike do the suspension it don't matter how much power you have , crap suspension can only put so much power on the ground.....

just about all stock standard bikes have more power than the standard
suspension & joe average rider can ever hope to make use of..

I have spent a small fortune on my XTR... but other than kev's 2 mods,
Rekluse auto clutch & a form air filter...not $1 on the motor.. and I bet on the trails it's
faster than most XTR's & it's still got more power than it "or me" can use..

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Harley Davidson..
The easyest way to turn gasoline into noise with out the side efect of horse power...