4-stroke

Editors note: this editorial piece was written over 5-years ago. Its interesting to note that we need this exact kind of resurgence in the Sport ATV market that we saw in 1999. New machines that changed things …
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Thumper Talk As the riding season winds down, it may be a good time to get your four-stroke ATV running up to its full po­tential. To help you out, we talked with some of the top four-stroke tun­ers in the country and asked them to lay…
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By Allen Knowles  and staff of Dirt Wheels FOUR-STROKE TEAR- DOWN TIPS When performance quads were two-strokes without power valves, rebuilding an engine was relatively cheap, even with labor included. Modern two-strokes with…
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By the staff of Dirt Wheels 2019 YAMAHA RAPTOR 700R Yamaha has so much love for sport ATVs that they keep the best-selling ATV in the category on dealer floors for you to buy today! It’s no secret, the struggle of the economic…
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Math lied to us all along, two is greater than four. Wiseco is introducing an all new conversion kit to get that sweet two stroke you've always wanted!
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The Kayo 150, junior sport quad, is taking the states by storm!
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1991 LT25OR VS. TODAY'S LT-R450 q At the end of 1989, Honda was assembling the last two-stroke TRX250R quad. Suzuki continued to produce their 250 QuadRacer until 1992. With Gary Denton and a few other riders at the controls, the Suzuki…
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