🎄ORDER EARLY FOR THE HOLIDAYS🚚FREE Shipping over $1,200, FREE Helmet, FREE Gift Card (details)

Big Bore Kits & Cylinder Kits

  1. Koso 150cc Big Bore Kit - Honda Grom & Monkey (2022+)
    Koso 150cc Big Bore Kit - Honda Grom & Monkey (2022+) $449.99
  1. TFC 54mm Cylinder and Stroker Crankshaft Kit - Honda Dio
    TFC 54mm Cylinder and Stroker Crankshaft Kit - Honda Dio $529.99
  1. SSP-G Zuma 50F Big Bore Cylinder & Head Kit - 47mm
    SSP-G Zuma 50F Big Bore Cylinder & Head Kit - 47mm $529.99
  1. SSP-G GY6 180cc Power Kit
    SSP-G GY6 180cc Power Kit $599.99
  1. TFC 63mm Cylinder and Stroker Crankshaft Kit - GY6
    TFC 63mm Cylinder and Stroker Crankshaft Kit - GY6 $729.99
  1. Koso 170cc Big Bore Kit with 4V Cylinder Head - Honda Grom & Monkey
    Koso 170cc Big Bore Kit with 4V Cylinder Head - Honda Grom & Monkey $1,099.00
  1. SSP-G GY6 232cc 4V Power Kit
    SSP-G GY6 232cc 4V Power Kit $1,799.99