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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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32 Items

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  1. Cylinder Kit, Pinasco - Vespa 50 (100cc)
    Cylinder Kit, Pinasco - Vespa 50 (100cc)
    $273.99
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  2. Malossi Cylinder Kit (177cc); P125/150, Stella 2t Malossi Cylinder Kit (177cc); P125/150, Stella 2t
    Malossi Cylinder Kit (177cc); P125/150, Stella 2t
    $366.99
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  3. 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
    $423.99
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  4. Malossi Cylinder Kit (72 cc, Cast Iron, 2T, AC); Kymco
    Malossi Cylinder Kit (72 cc, Cast Iron, 2T, AC); Kymco
    $287.99
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  5. Malossi, Cylinder Kit (132.4cc); Vespa Primavera
    Malossi, Cylinder Kit (132.4cc); Vespa Primavera
    $319.99
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  6. Malossi, Cylinder Kit; ET2
    Malossi, Cylinder Kit; ET2
    $249.99
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  7. Malossi, Cylinder Kit; Kymco ZX50/ Honda DIO Malossi, Cylinder Kit; Kymco ZX50/ Honda DIO
    Malossi, Cylinder Kit; Kymco ZX50/ Honda DIO
    $318.99
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  8. Malossi, Cylinder Kit; Vespa P200
    Malossi, Cylinder Kit; Vespa P200
    $408.99
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  9. Naraku GY6 58.5mm Big Bore Kit
    Naraku GY6 58.5mm Big Bore Kit
    $149.99
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  10. Naraku GY6 58.5mm Big Bore Kit - Forged Piston
    Naraku GY6 58.5mm Big Bore Kit - Forged Piston
    Naraku GY6 58.5mm Big Bore Kit - Forged Piston
    $184.99
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  11. Naraku GY6 63mm Big Bore Kit
    Naraku GY6 63mm Big Bore Kit
    Naraku GY6 63mm Big Bore Kit
    $224.99
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  12. Naraku QMB139 52.4mm Performance Cylinder & Head Kit
    Naraku QMB139 52.4mm Performance Cylinder & Head Kit
    Naraku QMB139 52.4mm Performance Cylinder & Head Kit
    $299.99
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  13. NCY Cylinder Head (2 valve, Big Valve, 61mm); Genuine, GY6
    NCY Cylinder Head (2 valve, Big Valve, 61mm); Genuine, GY6
    $138.99
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  14. NCY Cylinder Kit (Aluminum, 61mm, 171cc); Genuine/GY6
    NCY Cylinder Kit (Aluminum, 61mm, 171cc); Genuine/GY6
    $170.99
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  15. NCY Cylinder Kit 4T (81cc, Iron, 50mm); QMB139
    NCY Cylinder Kit 4T (81cc, Iron, 50mm); QMB139
    $128.99
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  16. NCY Gasket Kit (50mm); Dio/DD50 Big Bore Kit
    NCY Gasket Kit (50mm); Dio/DD50 Big Bore Kit
    $15.99
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  17. NCY Performance Valve Spring Set; Genuine, GY6 NCY Performance Valve Spring Set; Genuine, GY6
    NCY Performance Valve Spring Set; Genuine, GY6
    $25.99
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  18. NCY Ring Set (50mm); Dio/DD50 Big Bore Kit
    NCY Ring Set (50mm); Dio/DD50 Big Bore Kit
    $30.99
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  19. 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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  20. Polini Contessa 2T Big Bore Kit (72cc, Vertical); Zuma Verti
    Polini Contessa 2T Big Bore Kit (72cc, Vertical); Zuma Verti
    $217.99
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  21. 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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  22. Prima Cylinder Kit (Aluminum, 58.5mm, 161cc); Buddy 125 ONLY
    Prima Cylinder Kit (Aluminum, 58.5mm, 161cc); Buddy 125 ONLY
    $198.99
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  23. Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
    Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
    $126.99
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  24. SSP-G 50mm Dio SR Performance Cylinder Kit
    SSP-G 50mm Dio SR Performance Cylinder Kit
    $179.99
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  25. SSP-G 54mm Minarelli Big Bore Kit SSP-G 54mm Minarelli Big Bore Kit
    SSP-G 54mm Minarelli Big Bore Kit
    $198.99
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  26. SSP-G 70cc 2-stroke Big Bore Kit - 12mm Piston Pin
    SSP-G 70cc 2-stroke Big Bore Kit - 12mm Piston Pin
    $167.99
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  27. SSP-G 70cc 2-stroke Minarelli Big Bore Kit - 10mm Piston Pin SSP-G 70cc 2-stroke Minarelli Big Bore Kit - 10mm Piston Pin
    SSP-G 70cc 2-stroke Minarelli Big Bore Kit - 10mm Piston Pin
    $167.99
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  28. SSP-G Zuma 50F Big Bore Cylinder & Head Kit - 47mm SSP-G Zuma 50F Big Bore Cylinder & Head Kit - 47mm
    SSP-G Zuma 50F Big Bore Cylinder & Head Kit - 47mm
    $508.99
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  29. Universal Parts TB60 Big Bore Kit Universal Parts TB60 Big Bore Kit
    Universal Parts TB60 Big Bore Kit
    $51.99
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