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Big Bore Kits & Cylinder Kits

67 Products

Universal Parts OE Style replacement cylinder kits and performance big bore kits from top brands like SSP-G, Koso, Naraku, Athena and Polini for 2-stroke and 4-stroke scooters and motorcycles.

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Naraku GY6 58.5mm Big Bore Kit - Forged Piston

Part #: 137-9

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$159.99

SSP-G 61mm Drop In Cylinder Kit for GY6

Part #: 169-485

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$156.99

SSP-G GY6 61mm Big Bore Cylinder Kit

Part #: 169-173

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$156.99

Universal Parts GY6 61mm Big Bore Cylinder Kit

Part #: 164-309

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$61.99

Universal Parts GY6 "200cc" 61mm Cylinder Kit for Buggies and ATVs

Part #: 164-340

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$69.99

Koso 170cc 61mm Big Bore Kit - Honda Grom & Monkey (2014-2020)

Part #: 128-6

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$384.99

Koso 170cc Big Bore Kit with 4V Cylinder Head - Honda Grom & Monkey

Part #: 128-18

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$1,039.99

Universal Parts GY6 63mm Big Bore Cylinder Kit

Part #: 164-310

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$79.99

Naraku GY6 63mm Big Bore Kit

Part #: 137-11

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$179.99

TFC 63mm Cylinder and Stroker Crankshaft Kit - GY6

Part #: 179-22

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$699.99

SSP-G GY6 67mm 4V Cylinder Kit

Part #: 169-573

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$329.99

SSP-G GY6 180cc Power Kit

Part #: 169-99

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$549.99

SSP-G Cylinder Set for 180cc Power Kit

Part #: 169-172

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$146.99

SSP-G GY6 232cc 4V Power Kit

Part #: 169-531

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$1,699.99

SSP-G 39mm Kymco 2-Stroke AC Cylinder Kit

Part #: 169-404

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$134.99

47cc and 49cc 2-Stroke Performance Cylinder Kit

Part #: 107-67

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$89.99

Naraku 50cc Cylinder Kit for AC Minarelli

Part #: 137-56

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$69.99

Universal Parts Minarelli 40mm Cylinder & Head Kit

Part #: 161-226

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$70.99

Universal Parts Morini 41mm Cylinder Kit

Part #: 185-1

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$79.99

Universal Parts TB60 Big Bore Kit

Part #: 169-185

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$49.99

Out of Stock

Polini 43.5mm Puch Maxi Cylinder Kit

Part #: 146-48

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$259.99

Polini 47mm Horizontal Minarelli Corsa Cylinder Kit

Part #: 146-50

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$317.99

Universal Parts Morini 47mm Big Bore Cylinder Kit

Part #: 185-6

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$99.99

SSP-G Morini 47mm Big Bore Cylinder Kit

Part #: 185-10

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$139.99

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