1990 Pistons & Piston Rings

Piston, Forged, Flat, 4.040 in. Bore, Chevy, Each

Part Number: MAN-591340R-1

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Estimated Ship Date: Mar 13, 2026 if ordered today

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ProX Piston Kit XR600R '85-00 (97.25mm)

Part Number: PXR-01-1654-025

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit XR600R '85-00 (97.50mm)

Part Number: PXR-01-1654-050

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit XR600R '85-00 (98.00mm)

Part Number: PXR-01-1654-100

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit KL650 '87-91/KLR650 '95-09 9.5:1 (100.00mm)

Part Number: PXR-01-4687-000

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Pst Kit XR200 '80-84/200R '81-83+86-02 10.0:1 (66.00mm)

Part Number: PXR-01-1281-050

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Pst Kit XR200 '80-84/200R '81-83+86-02 10.0:1 (66.50mm)

Part Number: PXR-01-1281-100

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ProX Pst Kit XR200 '80-84/200R '81-83+86-02 10.0:1 (67.00mm)

Part Number: PXR-01-1281-150

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit CR250 '86-96 + RM250 '96-97 "Art" (66.38mm)

Part Number: PXR-01-1315-A4

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit Yamaha XT/TT600 '84-04 (95.00mm)

Part Number: PXR-01-2601-000

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit Yamaha XT/TT600 '84-04 (95.25mm)

Part Number: PXR-01-2601-025

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit Yamaha XT/TT600 '84-04 (95.75mm)

Part Number: PXR-01-2601-075

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit Yamaha XT/TT600 '84-04 (96.00mm)

Part Number: PXR-01-2601-100

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit Yamaha XT/TT600 '84-04 (96.50mm)

Part Number: PXR-01-2601-150

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit Yamaha XT/TT600 '84-04 (97.00mm)

Part Number: PXR-01-2601-200

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit RMX250 '89-00 (66.94mm)

Part Number: PXR-01-3311-B

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Estimated Ship Date: Feb 19, 2026 if ordered today

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ProX Piston Kit RMX250 '89-00 (66.95mm)

Part Number: PXR-01-3311-C

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Estimated Ship Date: Feb 19, 2026 if ordered today

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Piston, Ultra-Light GP, Forged, Flat Top, 2-Valve Reliefs, 4.040 in. Bore, 3.480 in. Stroke, 5.700 in. Rod, 1.550 in. Compression, Chevy, Right, Each

Part Number: JEP-173618R

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Piston, Forged, Dish, 4-Valve Reliefs, 3.766 in. Bore, 3.480 in. Stroke, 5.700 in. Rod, 1.560 in. Compression, Chevy, Each

Part Number: JEP-174002-1

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Piston, 23 Degree. Forged, Flat Top, 2-Valve Reliefs, 4.030 in. Bore, 3.480 in. Stroke, 6.250 in. Rod, 1.000 in. Compression, Chevy, Right, Each

Part Number: JEP-181907R

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Piston, 23 Degree. Forged, Flat Top, 2-Valve Reliefs, 4.040 in. Bore, 3.480 in. Stroke, 6.200 in. Rod, 1.050 in. Compression, Chevy, Left, Each

Part Number: JEP-181909L

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Piston, 23 Degree. Forged, Flat Top. 2-Valve Reliefs, 4.020 in. Bore, 3.480 in. Stroke, 6.125 in. Rod, 1.250 in. Compression, Chevy, Left, Each

Part Number: JEP-181910L

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Piston, 23 Degree. Forged, Flat Top, 2-Valve Reliefs, 4.030 in. Bore, 3.750 in. Stroke, 6.125 in. Rod, 1.125 in. Compression, Chevy, Right, Each

Part Number: JEP-181911R

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Piston, 23 Degree. Forged, Flat Top, 2-Valve Reliefs, 4.030 in. Bore, 3.480 in. Stroke, 6.000 in. Rod, 1.250 in. Compression, Chevy, Right, Each

Part Number: JEP-181916R

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Piston, 23 Degree. Forged, Flat Top, 2-Valve Reliefs, 4.040 in. Bore, 3.500 in. Stroke, 6.000 in. Rod, 1.250 in. Compression, Chevy, Left, Each

Part Number: JEP-181918L

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Estimated Ship Date: Feb 16, 2026 if ordered today

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