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ATV Big Bore Kits

Most Recent Big Bore Kits Reviews

Cylinder Works Standard Bore High Compression Cylinder Kit

Cylinder Works Standard Bore High Compression Cylinder Kit

Jorda Awesome "Love it. Can tell so much more compression"
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Athena Big Bore Kit

Athena Big Bore Kit

Roger21 - Tri cities Washington Awesome kit "Great kit really easy to install, I put it on my 07 CRF250R along wth a complete lower end rebuild, and stage 2 hotcam and it rips! Took some of the top end speed out so you’ll need a rear sprocket with less teeth good kit so far and seems high quality"
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