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Big Bore Kits & Cylinder Kits

47cc and 49cc 2-Stroke Performance Cylinder Kit
47cc and 49cc 2-Stroke Performance Cylinder Kit

Part #: 107-67  

  • Complete 44mm Cylinder Kit for the 47cc / 49cc Reed induction engine. This engine comes on Cag and Daytona Pocket Bikes, Pocket Quads and Small Dirt Bikes. You can choose from 10mm or 12mm Piston Pin Option.
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SSP-G 39mm Kymco 2-Stroke AC Cylinder Kit
SSP-G 39mm Kymco 2-Stroke AC Cylinder Kit

Part #: 169-404  

  • img-qind.JPGSSP-G 39mm 2-Stroke Air-Cooled Cylinder Kit for the Kymco Cobra 50, Super 8 50, Super 9 50, People 50, Like 50, Yup 50 and many more.
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Charmo 47mm Kymco 2-Stroke AC Big Bore Cylinder Kit
Charmo 47mm Kymco 2-Stroke AC Big Bore Cylinder Kit

Part #: 169-405  

  • img-qind.JPGCharmo 47mm 2-Stroke Air-Cooled Big Bore Cylinder Kit for the Kymco Cobra 50, Super 8 50, Super 9 50, People 50, Like 50, Yup 50 and many more.
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Universal Parts Minarelli 40mm Cylinder & Head Kit
Universal Parts Minarelli 40mm Cylinder & Head Kit

Part #: 161-226  

  • img-qind.JPGUniversal Parts 40mm Stock Cylinder and Head Kit for 50cc 2-stroke Minarelli 1PE40QMB Jog engines. Includes 10mm Piston Pin.
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Universal Parts Minarelli 47mm Big Bore Cylinder Kit
Universal Parts Minarelli 47mm Big Bore Cylinder Kit
  • img-qind.JPGUniversal Parts 47mm Big Bore Cylinder Kit for 50cc 2-stroke Minarelli 1PE40QMB Jog engines. Includes 12mm Piston Pin. Upgrades to 68cc!
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Blemished Minarelli 47mm Big Bore Cylinder Kit
Blemished Minarelli 47mm Big Bore Cylinder Kit

Part #: 161-230  

  • img-qind.JPG Universal Parts Factory Second 47mm Big Bore Kit for 50cc 2-stroke Minarelli 1PE40QMB Jog engines. 

    Please click "More Info" for a description of defects.
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Charmo 70cc 2-stroke Big Bore Kit - 10mm Piston Pin
Charmo 70cc 2-stroke Big Bore Kit - 10mm Piston Pin

Part #: 169-57  

  • img-qind.JPGCharmo 47mm Big Bore Cylinder set for 50cc 2-stroke Minarelli engines found on many popular 2-stroke full size scooters and ATVs. Upgrades to a 70cc.
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Hoca 70cc 2-stroke Big Bore Kit - 12mm Piston Pin
Hoca 70cc 2-stroke Big Bore Kit - 12mm Piston Pin

Part #: 169-153  

  • img-qind.JPGHoca 47mm Big Bore Head Kit for 50cc 2-stroke 40QMB, E40QMB, 1E40QMB and 1PE40QMB Minarelli engines.
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Hoca Minarelli Ceramic Big Bore Racing Kit - 10mm Pin
Hoca Minarelli Ceramic Big Bore Racing Kit - 10mm Pin

Part #: 169-331  

  • img-qind.JPGHoca 47.6mm Ceramic Big Bore Racing Kit w/ Nikasil Coating for 50cc 2-stroke Minarelli engines found on many popular Street Scooters & ATVs. Upgrades to a 70cc!
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Hoca Minarelli Ceramic Big Bore Racing Kit - 12mm Pin
Hoca Minarelli Ceramic Big Bore Racing Kit - 12mm Pin

Part #: 169-385  

  • img-qind.JPGHoca 47.6mm Ceramic Big Bore Racing Kit with Nikasil Coating for 50cc 2-stroke Minarelli engines. Upgrades to a 70cc!
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Athena 47.6mm A/C Minarelli Performance Cylinder Kit
Athena 47.6mm A/C Minarelli Performance Cylinder Kit

Part #: 135-2  

  • img-qind.JPG Athena 47.6mm (70cc) Air Cooled Horizontal Minarelli Big Bore Cylinder and Head Kit.
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Universal Parts Minarelli 50mm Cylinder Kit
Universal Parts Minarelli 50mm Cylinder Kit

Part #: 161-228  

  • img-qind.JPGUniversal Parts 50mm Stock Cylinder Kit for 90cc 2-stroke Minarelli 1E50QMF Jog engines. Includes 12mm Piston Pin.
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Charmo 54mm Minarelli Big Bore Kit
Charmo 54mm Minarelli Big Bore Kit
  • img-qind.JPGCharmo Big Bore Head Kit for 90cc 2-stroke 50QMF, E50QMF, 1E50QMF and 1PE50QMF Minarelli engines. 54mm with 12mm wrist pin, includes cylinder head.
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Hoca 54mm Minarelli Big Bore Kit - Tall
Hoca 54mm Minarelli Big Bore Kit - Tall

Part #: 169-340  

  • img-qind.JPGHoca Big Bore Head Kit for 90cc 2-stroke Minarelli engines. This kit should be used with the Hoca 45mm Stroker Crank for optimal performance!
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Hoca Jog 90cc Liquid-Cooled Cylinder Kit
Hoca Jog 90cc Liquid-Cooled Cylinder Kit

Part #: 169-165  

  • img-qind.JPGHoca Jog Liquid Cooled Cylinder Kit size 53 x 42 mm for 90cc 2-stroke 50QMF, E50QMF, 1E50QMF and 1PE50QMF Minarelli engines.
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Universal Parts GY6 Cylinder and Head Kit
Universal Parts GY6 Cylinder and Head Kit

Part #: 164-319  

  • img-qind.JPGUniversal Parts Cylinder and Head Kit for 150cc GY6 4-stroke engines. 57.4mm or 61mm bore sizes.
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Universal Parts GY6 150cc 57.4mm Cylinder Kit
Universal Parts GY6 150cc 57.4mm Cylinder Kit

Part #: 164-308  

  • img-qind.JPGUniversal Parts 57.4mm Stock Cylinder Kit for 150cc GY6 4-stroke engines.
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Universal Parts GY6 61mm Big Bore Cylinder Kit
Universal Parts GY6 61mm Big Bore Cylinder Kit

Part #: 164-309  

  • img-qind.JPGUniversal Parts 61mm Big Bore Cylinder Kit for 150cc GY6 4-stroke engines. Upgrades to 169cc based on a stock stroke of 57.8mm!
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Universal Parts GY6 63mm Big Bore Cylinder Kit
Universal Parts GY6 63mm Big Bore Cylinder Kit

Part #: 164-310  

  • img-qind.JPGUniversal Parts 63mm Big Bore Cylinder Kit for 150cc GY6 4-stroke engines. Upgrades to 180cc based on a stock stroke of 57.8mm!
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SSP-G GY6 58mm Big Bore Kit
SSP-G GY6 58mm Big Bore Kit

Part #: 169-314  

  • img-qind.JPGSSP-G 58mm Big Bore Kit for 150cc and 125cc GY6 4-stroke engines and engine based vehicles.
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Results 1-20 of 2612