25th Anniversary 2-Stroke Sweepstakes Enter Weekly For a Chance to Win A 2024 KTM 250SX Enter Now
Shipping to US Flag United States
Free shipping over $79
Memorial Day Sale Ends Today! Get Up To 70% Off Parts and Gear Shop Now
Athena Big Bore Kit
Athena Big Bore Kit

$307.76 - $1348.16
10% Off - Save up to $149.79

Select your ride to see if this big bore kit fits


  • Product Details

  • Product Variant Manufacturer Part #
    105cc P400485100038
    130cc P400250100005
    144cc P400250100011, P400485100030, P400485100029
    164cc P400210100023
    276cc P400270100015, P400270100017, P400270100021
    280cc P400210100009, P400270100004, P400270100007
    290cc P400250100013, P400250100018, P400510100004, P400510100020, P400485100032, P400485100026, P400485100012, P400250100019
    293cc P400485100042
    300cc P400220100002, P400220100004
    365cc P400270100005, P400270100011
    435cc P400510100002
    478cc P400485100016, P400485100021, P400485100014
    480cc P400210100007
    490cc P400210100030, P400210100001, P400210100021, P400250100003, P400250100015, P400510100008, P400510100006, P400510100012, P400510100016, P400250100010, P400250100023
    80cc P400270100002, P400250100007

California Proposition 65

WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to www.P65Warnings.ca.gov.