2021 Pistons & Piston Rings

ProX Piston Kit Yamaha YZ250F '19-22 13.8:1 (76.96mm)

Part Number: PXR-01-2439-B

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Estimated Ship Date: Jan 8, 2026 if ordered today

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ProX Piston Kit YZ450F '20-22+WR450F '21-22 13.0:1 (96.96mm)

Part Number: PXR-01-2450-B

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Estimated Ship Date: Jan 8, 2026 if ordered today

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ProX Piston Kit Yam Wolverine RMAX2/4 '21-22

Part Number: PXR-01-2921-C

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Estimated Ship Date: Jan 8, 2026 if ordered today

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ProX Piston Kit RM-Z250 '10-22 "ART" 13.4:1 (76.96mm)

Part Number: PXR-01-3341-A

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Estimated Ship Date: Jan 8, 2026 if ordered today

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ProX Piston Kit RM-Z250 '10-22 "ART" 13.4:1 (76.98mm)

Part Number: PXR-01-3341-C

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ProX Pstn Kit DR-Z400 '00-21/LT-Z400 '03-18 12.2:1 (89.97mm)

Part Number: PXR-01-3420-B

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ProX Pstn Kit DR-Z400 '00-21/LT-Z400 '03-18 12.2:1 (89.98mm)

Part Number: PXR-01-3420-C

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ProX Piston Kit YZ250 '99-22 + RM250 '03-12 (66.35mm)

Part Number: PXR-01-2321-A

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ProX Piston Kit YZ250 '99-22 + RM250 '03-12 (66.37mm)

Part Number: PXR-01-2321-C

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ProX Piston Kit Sherco 300SE/SC-R '16-22 (71.94mm)

Part Number: PXR-01-7346-A

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ProX Piston Kit Beta 350RR '15-22 13.2:1 (87.96mm)

Part Number: PXR-01-7355-A

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ProX Piston Kit Beta 350RR '15-22 13.2:1 (87.98mm)

Part Number: PXR-01-7355-C

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ProX Piston Kit Beta 390RR '15-22 12.5:1 (87.96mm)

Part Number: PXR-01-7365-A

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ProX Piston Kit Beta 430RR '15-22 11.9:1 (94.96mm)

Part Number: PXR-01-7415-A

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ProX Piston Kit Beta 430RR '15-22 11.9:1 (94.97mm)

Part Number: PXR-01-7415-B

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ProX Piston Kit Beta 430RR '15-22 11.9:1 (94.98mm)

Part Number: PXR-01-7415-C

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ProX Piston Kit Beta 480RR '15-22 11.9:1 (99.98mm)

Part Number: PXR-01-7425-C

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ProX Piston Kit Polaris Sportsman 450/570 '14-21 (100.00mm)

Part Number: PXR-01-5512-100

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ProX Piston Kit Kawasaki KX250 '21-22

Part Number: PXR-01-4351-B

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ProX Piston Kit Kawasaki KX250 '21-22

Part Number: PXR-01-4351-C

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ProX Piston Kit Beta RR250 '13-21 + XTrainer 250 (66.34mm)

Part Number: PXR-01-7313-A

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ProX Piston Kit Beta RR250 '13-21 + XTrainer 250 (66.35mm)

Part Number: PXR-01-7313-B

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ProX Piston Kit Beta RR250 '13-21 + XTrainer 250 (66.36mm)

Part Number: PXR-01-7313-C

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ProX Piston Kit Sherco 250SE/SC-R '17-22 (66.34mm)

Part Number: PXR-01-7337-A

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ProX Piston Kit Sherco 250SE/SC-R '17-22 (66.35mm)

Part Number: PXR-01-7337-B

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