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Thread: 06 YFZ 450 motor upgrades

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  1. #1
    Join Date
    Jun 2008
    Location
    Upstate NY
    Posts
    50

    Question 06 YFZ 450 motor upgrades

    Hey guy's...just wondering what can be done to improve horsepower and torque without sacrificing a lot of reliability. The big bore kits and cam upgrades look like a good place to start..but how long will the thing hold together ?? I dont do any racing just long distance trail riding...went up 1 tooth on the rear sprocket...still not enough pull.....I dont wanna go 2 because I will loose too much top end...looking to pick up mabye 20-25 horses without having to get into the motor every month.

    New to 4 strokes converted from a CR250 so kinda new to the 450 motors. Thanks Guys
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