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Athena ATV Big Bore Kits

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Most Recent Big Bore Kits Reviews

Athena Factory Cylinder Kit

Athena Factory Cylinder Kit

Hitty216 - Walton New York Excellent Product "I bought this for a 2003 kx125 and man did it bring it back to life plus some. My 2003 can keep up with modern 125’s with this kit."
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Athena Big Bore Kit

Athena Big Bore Kit

Andy C - Norcal Perfect improvement! "My son needed just a little extra out of his yz85, so 3 years ago I upgraded his top end to the 105cc big bore, and just like that he was back in the game, keeping up with the bigger bikes. Didn’t have a single problem with installation and even picked up extra set of rings and it lasted almost 3 seasons. Also no machining required."
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