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Big Bore Kits

Big Bore kits for Gas Scooters, Pocket Bikes, ATVs, Dirt Bikes & R/C Engines.

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29 Items

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  1. Blue Line Big Bore Kit w/ Head 4T (72cc, 64mm Valves); QMB Blue Line Big Bore Kit w/ Head 4T (72cc, 64mm Valves); QMB
    Blue Line Big Bore Kit w/ Head 4T (72cc, 64mm Valves); QMB
    $62.99
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  2. Cylinder Kit, Pinasco - Vespa 50 (100cc)
    Cylinder Kit, Pinasco - Vespa 50 (100cc)
    $273.99
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  3. DR Cylinder Kit; Vespa P/PX, Bajaj 3-port, Genuine Stella 2t
    DR Cylinder Kit; Vespa P/PX, Bajaj 3-port, Genuine Stella 2t
    $244.99
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  4. Malossi Cylinder Kit (177cc); P125/150, Stella 2t Malossi Cylinder Kit (177cc); P125/150, Stella 2t
    Malossi Cylinder Kit (177cc); P125/150, Stella 2t
    $293.99
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  5. Malossi Cylinder Kit (190cc, 71mm); Vespa ET4, LEADER Engine Malossi Cylinder Kit (190cc, 71mm); Vespa ET4, LEADER Engine
    Malossi Cylinder Kit (190cc, 71mm); Vespa ET4, LEADER Engine
    $396.99
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  6. Malossi Cylinder Kit (70cc, iron, AC) Minarelli, Buddy 50, Malossi Cylinder Kit (70cc, iron, AC) Minarelli, Buddy 50,
    Malossi Cylinder Kit (70cc, iron, AC) Minarelli, Buddy 50,
    $198.99
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  7. Malossi Cylinder Kit (72 cc, Cast Iron, 2T, AC); Kymco
    Malossi Cylinder Kit (72 cc, Cast Iron, 2T, AC); Kymco
    $261.99
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  8. Malossi, Cylinder Kit (12mm); Super 9, LC, Iron, 72cc
    Malossi, Cylinder Kit (12mm); Super 9, LC, Iron, 72cc
    $329.99
    Out of stock
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  9. Malossi, Cylinder Kit (132.4cc); Vespa Primavera
    Malossi, Cylinder Kit (132.4cc); Vespa Primavera
    $280.99
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  10. Malossi, Cylinder Kit; ET2
    Malossi, Cylinder Kit; ET2
    $178.99
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  11. Malossi, Cylinder Kit; Kymco ZX50/ Honda DIO Malossi, Cylinder Kit; Kymco ZX50/ Honda DIO
    Malossi, Cylinder Kit; Kymco ZX50/ Honda DIO
    $226.99
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  12. Malossi, Cylinder Kit; Vespa P200
    Malossi, Cylinder Kit; Vespa P200
    $398.99
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  13. NCY 68cc Cylinder Kit (Iron,10mm pin) Minarelli AC
    NCY 68cc Cylinder Kit (Iron,10mm pin) Minarelli AC
    $113.99
    Out of stock
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  14. NCY Big Bore Kit w/head(50mm);Honda Dio,Sym DD50 NCY Big Bore Kit w/head(50mm);Honda Dio,Sym DD50
    NCY Big Bore Kit w/head(50mm);Honda Dio,Sym DD50
    $164.99
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  15. NCY Cylinder Head (2 valve, Big Valve, 61mm); Genuine, GY6
    NCY Cylinder Head (2 valve, Big Valve, 61mm); Genuine, GY6
    $129.99
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  16. NCY Cylinder Kit (72cc, Iron,12mm Pin) Horiz. Minarelli 2T
    NCY Cylinder Kit (72cc, Iron,12mm Pin) Horiz. Minarelli 2T
    $136.99
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  17. NCY Cylinder Kit (Cast; 52mm, 88cc); QMB139
    NCY Cylinder Kit (Cast; 52mm, 88cc); QMB139
    $139.99
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  18. NCY Cylinder Kit 10mm Pin, 72cc); 2T Minarelli 50 Horizontal
    NCY Cylinder Kit 10mm Pin, 72cc); 2T Minarelli 50 Horizontal
    $149.99
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  19. NCY Cylinder Kit 4T (81cc, Iron, 50mm); QMB139
    NCY Cylinder Kit 4T (81cc, Iron, 50mm); QMB139
    $139.99
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  20. NCY Gasket Kit (50mm); Dio/DD50 Big Bore Kit
    NCY Gasket Kit (50mm); Dio/DD50 Big Bore Kit
    $15.99
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  21. NCY Performance Valve Spring Set; Genuine, GY6 NCY Performance Valve Spring Set; Genuine, GY6
    NCY Performance Valve Spring Set; Genuine, GY6
    $24.99
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  22. NCY Ring Set (50mm); Dio/DD50 Big Bore Kit
    NCY Ring Set (50mm); Dio/DD50 Big Bore Kit
    $30.99
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  23. Polini Big Bore Kit; 4T Vespa Primavera, LX 50, Fly 50 & P50
    Polini Big Bore Kit; 4T Vespa Primavera, LX 50, Fly 50 & P50
    $307.99
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  24. Polini Contessa 2T Big Bore Kit (72cc, Vertical); Zuma Verti
    Polini Contessa 2T Big Bore Kit (72cc, Vertical); Zuma Verti
    $214.99
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  25. Polini Contessa Big Bore Kit (72cc); Yamaha Zuma 50 2T Horiz
    Polini Contessa Big Bore Kit (72cc); Yamaha Zuma 50 2T Horiz
    $218.99
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  26. Polini Corsa Big Bore Kit; 2T Yamaha Zuma 50 Vertical Engine
    Polini Corsa Big Bore Kit; 2T Yamaha Zuma 50 Vertical Engine
    $343.99
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  27. Polini Corsa Big Bore Kit; Honda Dio, Kymco ZX
    Polini Corsa Big Bore Kit; Honda Dio, Kymco ZX
    $295.99
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  28. Prima Cylinder Kit (Aluminum, 58.5mm, 161cc); Buddy 125 ONLY
    Prima Cylinder Kit (Aluminum, 58.5mm, 161cc); Buddy 125 ONLY
    $214.99
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  29. Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
    Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
    $134.99
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