Dirt Motorcycle Engine Parts

17022 products

  • Piston Ring 66.5mm Two Stroke Vintco RSB6650 Piston Ring 66.5mm Two Stroke Vintco RSB6650

    Vintco Piston Ring 66.5mm Two Stroke Vintco RSB6650

    Out of stock

    The VintCo RSB6650 is a two-stroke piston ring intended for engine service and rebuild applications. Supplied individually, it is designed as a replacement ring for pistons requiring this size and configuration.Features Replacement piston ring for two-stroke applications Suitable for engine service and rebuild work Sold individually Specifications VintCo Part Number: RSB6650 Ring Diameter: 66.5 mm Ring Thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring Two Stroke 66mm Vintco RSB6600 Piston Ring Two Stroke 66mm Vintco RSB6600

    Vintco Piston Ring Two Stroke 66mm Vintco RSB6600

    Out of stock

    VintCo RSB6600 is a two-stroke piston ring intended for compatible piston applications. It is supplied individually as a replacement ring for piston service and rebuild work.Features Two-stroke piston ring Supplied individually Specifications VintCo Part Number: RSB6600 Ring size: 66 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring 65.5mm Two Stroke Vintco RSB6550 Piston Ring 65.5mm Two Stroke Vintco RSB6550

    Vintco Piston Ring 65.5mm Two Stroke Vintco RSB6550

    Out of stock

    The VintCo RSB6550 is a two-stroke piston ring intended for piston service and replacement applications. This piston ring is supplied individually and is designed for use with a 65.5 mm piston size.Features Suitable for two-stroke applications Intended for piston ring replacement Sold individually Specifications VintCo Part Number: RSB6550 Piston ring size: 65.5 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Two Stroke Piston Ring 65mm Vintco RSB6500 Two Stroke Piston Ring 65mm Vintco RSB6500

    Vintco Two Stroke Piston Ring 65mm Vintco RSB6500

    Out of stock

    VintCo RSB6500 is a two-stroke piston ring for replacement and service applications, supplied individually as a single ring.Features Suitable for two-stroke applications Supplied individually Specifications VintCo Part Number: RSB6500 Ring diameter: 65 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring 64.5mm Two Stroke Vintco RSB6450 Piston Ring 64.5mm Two Stroke Vintco RSB6450

    Vintco Piston Ring 64.5mm Two Stroke Vintco RSB6450

    Out of stock

    This VintCo two-stroke piston ring is a 64.5 mm replacement piston ring for compatible engine service and rebuild applications. Supplied individually, it is intended for use where the correct ring size and ring thickness are required.Features For two-stroke piston applications Suitable for replacement during engine service or rebuild work Sold individually Specifications VintCo Part Number: RSB6450 Ring diameter: 64.5 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring Two Stroke 64mm Vintco RSB6400 Piston Ring Two Stroke 64mm Vintco RSB6400

    Vintco Piston Ring Two Stroke 64mm Vintco RSB6400

    Out of stock

    VintCo RSB6400 is a two-stroke piston ring for piston replacement and rebuild applications. It is supplied individually and is sized for 64 mm piston use in compatible two-stroke engines.Features For two-stroke piston applications Replacement piston ring Sold individually Specifications VintCo Part Number: RSB6400 Ring Diameter: 64 mm Ring Thickness: 1 mm

    Out of stock

    £27.20

  • Two Stroke Piston Ring 61.5mm Vintco RSB6150 Two Stroke Piston Ring 61.5mm Vintco RSB6150

    Vintco Two Stroke Piston Ring 61.5mm Vintco RSB6150

    Out of stock

    VintCo RSB6150 is a two-stroke piston ring for 61.5 mm piston applications. It is supplied as a single ring for piston service or replacement work on compatible two-stroke engines.Features Two-stroke piston ring Suitable for 61.5 mm piston applications Sold individually Specifications VintCo Part Number: RSB6150 Ring size: 61.5 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring 61mm Two Stroke Vintco RSB6100 Piston Ring 61mm Two Stroke Vintco RSB6100

    Vintco Piston Ring 61mm Two Stroke Vintco RSB6100

    Out of stock

    The VintCo RSB6100 is a 61 mm piston ring for two-stroke applications, supplied as an individual replacement component for piston ring service and repair.Features Suitable for two-stroke applications Supplied individually Specifications VintCo Part Number: RSB6100 Ring size: 61 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring Two Stroke 60.5mm Vintco RSB6050 Piston Ring Two Stroke 60.5mm Vintco RSB6050

    Vintco Piston Ring Two Stroke 60.5mm Vintco RSB6050

    Out of stock

    The VintCo RSB6050 is a two-stroke piston ring sized at 60.5 mm, intended for compatible piston assemblies. It is supplied individually and has a 1 mm ring thickness.Features Suitable for two-stroke applications Sold individually Specifications VintCo Part Number: RSB6050 Ring size: 60.5 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring Two Stroke 60mm Vintco RSB6000 Piston Ring Two Stroke 60mm Vintco RSB6000

    Vintco Piston Ring Two Stroke 60mm Vintco RSB6000

    Out of stock

    The VintCo RSB6000 is a piston ring for two-stroke applications, intended as a replacement component for a 60 mm piston. It is supplied individually for single-ring replacement or servicing requirements.Features Replacement piston ring for two-stroke applications Supplied individually Specifications VintCo Part Number: RSB6000 Piston ring diameter: 60 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring 57.5mm Two Stroke Vintco RSB5750 Piston Ring 57.5mm Two Stroke Vintco RSB5750

    Vintco Piston Ring 57.5mm Two Stroke Vintco RSB5750

    Out of stock

    VintCo RSB5750 is a 57.5 mm piston ring for two-stroke engines, supplied as an individual replacement ring for specified Yamaha DT125 and Honda MT125/MT125R models.Features Replacement piston ring for two-stroke engine applications Sold individually Specifications VintCo Part Number: RSB5750 Ring diameter: 57.5 mm Ring thickness: 1 mm Vehicle Fitments 1974 Yamaha DT125 1974 Honda MT125 1975 Yamaha DT125 1975 Honda MT125 1976 Yamaha DT125 1976 Honda MT125 1977 Yamaha DT125 1977 Honda MT125R 1978 Yamaha DT125 1978 Honda MT125R 1979 Yamaha DT125 1980 Yamaha DT125 1981 Yamaha DT125

    Out of stock

    £27.20

  • Piston Ring Two Stroke 57mm Vintco RSB5700 Piston Ring Two Stroke 57mm Vintco RSB5700

    Vintco Piston Ring Two Stroke 57mm Vintco RSB5700

    Out of stock

    VintCo RSB5700 is a two-stroke piston ring for 57 mm pistons, supplied individually for compatible Yamaha DT125 and Honda MT125/MT125R models.Features Replacement piston ring for two-stroke engines Supplied individually Specifications VintCo Part Number: RSB5700 Product Type: Piston ring Piston size: 57 mm Ring thickness: 1 mm Vehicle Fitments 1974 Yamaha DT125 1974 Honda MT125 1975 Yamaha DT125 1975 Honda MT125 1976 Yamaha DT125 1976 Honda MT125 1977 Yamaha DT125 1977 Honda MT125R 1978 Yamaha DT125 1978 Honda MT125R 1979 Yamaha DT125 1980 Yamaha DT125 1981 Yamaha DT125

    Out of stock

    £27.20

  • Piston Ring 56.5mm Two Stroke Vintco RSB5650 Piston Ring 56.5mm Two Stroke Vintco RSB5650

    Vintco Piston Ring 56.5mm Two Stroke Vintco RSB5650

    Out of stock

    This VintCo piston ring is a 56.5 mm two-stroke replacement ring for the listed Yamaha DT125, Honda MT125 and Honda MT125R models. It is supplied as a single ring for piston service and replacement applications.Features Two-stroke piston ring Suitable for piston service and replacement Sold individually Fits listed Yamaha DT125, Honda MT125 and Honda MT125R models Specifications VintCo Part Number: RSB5650 Ring diameter: 56.5 mm Ring thickness: 1 mm Vehicle Fitments 1974 Yamaha DT125 1974 Honda MT125 1975 Yamaha DT125 1975 Honda MT125 1976 Yamaha DT125 1976 Honda MT125 1977 Yamaha DT125 1977 Honda MT125R 1978 Yamaha DT125 1978 Honda MT125R 1979 Yamaha DT125 1980 Yamaha DT125 1981 Yamaha DT125

    Out of stock

    £27.20

  • Two Stroke Piston Ring 56mm Vintco RSB5600 Two Stroke Piston Ring 56mm Vintco RSB5600

    Vintco Two Stroke Piston Ring 56mm Vintco RSB5600

    Out of stock

    VintCo RSB5600 is a two-stroke piston ring for 56 mm pistons, supplied individually for service replacement on compatible Yamaha DT125, Honda MT125 and Honda MT125R models.Features Two-stroke piston ring Supplied individually Service replacement component Specifications VintCo Part Number: RSB5600 Ring diameter: 56 mm Ring thickness: 1 mm Vehicle Fitments 1974 Yamaha DT125 1974 Honda MT125 1975 Yamaha DT125 1975 Honda MT125 1976 Yamaha DT125 1976 Honda MT125 1977 Yamaha DT125 1977 Honda MT125R 1978 Yamaha DT125 1978 Honda MT125R 1979 Yamaha DT125 1980 Yamaha DT125 1981 Yamaha DT125

    Out of stock

    £27.20

  • Piston Ring 55.5mm Two Stroke Vintco RSB5550 Piston Ring 55.5mm Two Stroke Vintco RSB5550

    Vintco Piston Ring 55.5mm Two Stroke Vintco RSB5550

    Out of stock

    The VintCo RSB5550 is a piston ring for two-stroke applications, supplied as an individual replacement ring for a 55.5 mm piston.Features Replacement piston ring for two-stroke engines Supplied individually Specifications VintCo Part Number: RSB5550 Piston ring diameter: 55.5 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring 55mm Two Stroke Vintco RSB5500 Piston Ring 55mm Two Stroke Vintco RSB5500

    Vintco Piston Ring 55mm Two Stroke Vintco RSB5500

    Out of stock

    VintCo RSB5500 is a piston ring for compatible two-stroke piston applications. It is supplied individually and is designed for use where a 55 mm ring with a 1 mm thickness is required.Features Replacement piston ring for compatible two-stroke applications Sold individually Specifications VintCo Part Number: RSB5500 Piston ring diameter: 55 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Two Stroke Piston Ring 54.5mm Vintco RSB5450 Two Stroke Piston Ring 54.5mm Vintco RSB5450

    Vintco Two Stroke Piston Ring 54.5mm Vintco RSB5450

    Out of stock

    The VintCo RSB5450 is a two-stroke piston ring for 54.5 mm piston applications. It is supplied as a single ring and is intended as a replacement component within the piston ring assembly.Features Replacement piston ring for two-stroke applications Sold individually Specifications VintCo Part Number: RSB5450 Piston ring size: 54.5 mm Ring thickness: 1 mm

    Out of stock

    £27.20

  • Piston Ring 54mm Two Stroke Vintco RSB5400 Piston Ring 54mm Two Stroke Vintco RSB5400

    Vintco Piston Ring 54mm Two Stroke Vintco RSB5400

    Out of stock

    The VintCo RSB5400 is a two-stroke piston ring intended for 54 mm piston applications. It is supplied as a single replacement ring and is designed for use where a 1 mm ring thickness is required.Features Replacement piston ring for two-stroke applications Supplied individually Specifications VintCo Part Number: RSB5400 Piston ring diameter: 54 mm Ring thickness: 1 mm

    Out of stock

    £29.85

  • Piston Kit 84-93 Yamaha WR YZ 490 500 88.5mm 1.5mm Over Vintco PSY36-1.5 Piston Kit 84-93 Yamaha WR YZ 490 500 88.5mm 1.5mm Over Vintco PSY36-1.5

    Vintco Piston Kit 84-93 Yamaha WR YZ 490 500 88.5mm 1.5mm Over Vintco PSY36-1.5

    Out of stock

    VintCo piston kit PSY36-1.5 for 1984-1990 Yamaha YZ490 and 1992-1993 Yamaha WR500 models. This kit is supplied in 88.5 mm size with a 1.5 mm oversize piston, and includes rings, pin and clips. The wrist pin bearing is sold separately. The piston is forged and MoS2-coated for running-in.Features Complete piston kit with rings, pin and clips Wrist pin bearing sold separately Forged piston construction MoS2-coated for running-in Specifications VintCo Part Number: PSY36-1.5 Nominal piston size: 88.5 mm Oversize: 1.5 mm Piston measurement: 88.42 mm Clearance: 0.08 mm Made in Germany Vehicle Fitments 1984 Yamaha YZ490 1985 Yamaha YZ490 1986 Yamaha YZ490 1987 Yamaha YZ490 1988 Yamaha YZ490 1989 Yamaha YZ490 1990 Yamaha YZ490 1992 Yamaha WR500 1993 Yamaha WR500

    Out of stock

    £198.07

  • Piston Kit 84-93 Yamaha WR YZ 490 500 88mm 1.0mm Over Vintco PSY36-1.0 Piston Kit 84-93 Yamaha WR YZ 490 500 88mm 1.0mm Over Vintco PSY36-1.0

    Vintco Piston Kit 84-93 Yamaha WR YZ 490 500 88mm 1.0mm Over Vintco PSY36-1.0

    Out of stock

    VintCo piston kit for Yamaha YZ490 and WR500 models, covering 1984-1990 YZ490 and 1992-1993 WR500 applications. This forged piston kit is made in Germany and is supplied with rings, pin and clips; the wrist pin bearing is sold separately.Features Supplied with rings, pin and clips Wrist pin bearing sold separately Forged piston Made in Germany MoS2 coated to aid initial running-in Specifications VintCo Part Number: PSY36-1.0 Piston size: 88 mm Oversize: 1.0 mm over Piston measurement: 87.92 mm Clearance: 0.08 mm Vehicle Fitments 1984 Yamaha YZ490 1985 Yamaha YZ490 1986 Yamaha YZ490 1987 Yamaha YZ490 1988 Yamaha YZ490 1989 Yamaha YZ490 1990 Yamaha YZ490 1992 Yamaha WR500 1993 Yamaha WR500

    Out of stock

    £198.07

  • Piston Kit 84-93 Yamaha WR YZ 490 500 87mm Standard Vintco PSY36-00 Piston Kit 84-93 Yamaha WR YZ 490 500 87mm Standard Vintco PSY36-00

    Vintco Piston Kit 84-93 Yamaha WR YZ 490 500 87mm Standard Vintco PSY36-00

    Out of stock

    Standard 87 mm piston kit for 1984-1990 Yamaha YZ490 and 1992-1993 Yamaha WR500 models. The kit includes rings, pin and clips, while the wrist pin bearing is sold separately. This forged piston is made in Germany and features a MoS2 coating to assist with break-in.Features Supplied with rings, pin and clips Wrist pin bearing sold separately Standard size replacement Coated to assist with break-in Made in Germany Specifications VintCo Part Number: PSY36-00 Piston size: 87 mm Size designation: Standard Measured piston size: 86.92 mm Recommended clearance: 0.08 mm Piston construction: Forged Coating: MoS2 Vehicle Fitments 1984 Yamaha YZ490 1985 Yamaha YZ490 1986 Yamaha YZ490 1987 Yamaha YZ490 1988 Yamaha YZ490 1989 Yamaha YZ490 1990 Yamaha YZ490 1992 Yamaha WR500 1993 Yamaha WR500

    Out of stock

    £198.07

  • Piston Kit 84-93 Yamaha YZ WR 490 500 87.5mm 0.5mm Over Vintco PSY36-0.5 Piston Kit 84-93 Yamaha YZ WR 490 500 87.5mm 0.5mm Over Vintco PSY36-0.5

    Vintco Piston Kit 84-93 Yamaha YZ WR 490 500 87.5mm 0.5mm Over Vintco PSY36-0.5

    Out of stock

    This piston kit is designed for Yamaha YZ490 and WR500 models and includes the piston, rings, pin and clips. It is a forged piston made in Germany with a MoS2 coating for running-in. The kit is supplied for 0.5 mm oversize applications, while the wrist pin bearing is sold separately.Features Piston kit includes rings, pin and clips Wrist pin bearing sold separately MoS2 coated for running-in Specifications VintCo Part Number: PSY36-0.5 Product type: Piston kit Forged piston Made in Germany Oversize: 0.5 mm Nominal piston size: 87.5 mm Piston measurement: 87.42 mm Clearance: 0.08 mm Vehicle Fitments 1984 Yamaha YZ490 1985 Yamaha YZ490 1986 Yamaha YZ490 1987 Yamaha YZ490 1988 Yamaha YZ490 1989 Yamaha YZ490 1990 Yamaha YZ490 1992 Yamaha WR500 1993 Yamaha WR500

    Out of stock

    £198.07

  • Piston Kit 73-74 Yamaha MX 360 81.5mm 1.5mm Over Vintco PSY35-1.5 Piston Kit 73-74 Yamaha MX 360 81.5mm 1.5mm Over Vintco PSY35-1.5

    Vintco Piston Kit 73-74 Yamaha MX 360 81.5mm 1.5mm Over Vintco PSY35-1.5

    1 in stock 1-2 business days

    This VintCo piston kit is designed for 1973-1974 Yamaha MX360 models and provides the main components required for a top-end rebuild on a vintage 2-stroke engine. It includes the piston, rings, pin and clips, and is manufactured with modern materials and production techniques for OEM-equivalent fit and performance. The piston is forged and MoS2 coated for running-in, while the wrist pin bearing is available separately. Other size options are also available.Features Complete piston kit with piston, rings, pin and clips Suitable for vintage 2-stroke top-end rebuilds Manufactured with modern materials and manufacturing techniques for OEM-equivalent fit and performance MoS2 coated for running-in Wrist pin bearing sold separately Other size options available Specifications VintCo Part Number: PSY35-1.5 Forged piston Made in Germany Bore size: 81.5 mm Oversize: +1.5 mm Piston size: 81.44 mm Clearance: 0.06 mm Vehicle Fitments 1973 Yamaha MX360 1974 Yamaha MX360

    1 in stock 1-2 business days

    £211.22

  • Piston Kit 73-74 Yamaha MX 360 81.0mm 1.0mm Over Vintco PSY35-1.0 Piston Kit 73-74 Yamaha MX 360 81.0mm 1.0mm Over Vintco PSY35-1.0

    Vintco Piston Kit 73-74 Yamaha MX 360 81.0mm 1.0mm Over Vintco PSY35-1.0

    Out of stock

    This VintCo piston kit is designed for 1973-1974 Yamaha MX360 models and provides the main components required for a vintage 2-stroke piston replacement. It includes the piston, rings, pin and clips, while the wrist pin bearing is available separately. Manufactured using modern materials and production methods, it is intended to provide OEM-equivalent fitment and performance for vintage motorcycle use.Features Complete piston kit with piston, rings, pin and clips Intended for vintage 2-stroke engine rebuilds Supports OEM-equivalent fitment and performance Wrist pin bearing available separately Additional size options available Specifications VintCo Part Number: PSY35-1.0 Piston size: 81.0 mm Oversize: +1.0 mm Piston measurement: 80.94 mm Clearance: 0.06 mm Forged piston MoS2 coated for break-in Made in Germany Vehicle Fitments 1973 Yamaha MX360 1974 Yamaha MX360

    Out of stock

    £211.22

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