Pistons, Rings, Wrist Pins, Bushings & More

Oil Ring Support Rail, 4.030-4.059 in. Bore, Spring Steel, Each

Part Number: JEP-4030-183

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Oil Ring Support Rail, 4.125-4.154 in. Bore, Spring Steel, Each

Part Number: JEP-4125-183

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Oil Ring Support Rail, 4.310-4.349 in. Bore, Spring Steel, Each

Part Number: JEP-4310-193

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Oil Ring Support Rail, 4.600-4.635 in. Bore, 0.203 in. Radial Depth, Spring Steel, Each

Part Number: JEP-4600-203

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Oil Ring Support Rail, 4.500-4.529 in. Bore, Spring Steel, Each

Part Number: JEP-4500-203

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Oil Ring Support Rail, 4.350-4.374 in. Bore, Spring Steel, Each

Part Number: JEP-4350-193

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Estimated Ship Date: Nov 18, 2025 if ordered today

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Oil Ring Support Rail, 3.999-4.029 in. Bore, Spring Steel, Each

Part Number: JEP-4000-183

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SHIM MATERIAL SPRING STEEL

Part Number: TSR-002957

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Oil Ring Support Rail, 4.591-4.625 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-456

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Oil Ring Support Rail, 4.126-4.187 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-412

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Oil Ring Support Rail, 4.000-4.060 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-400

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Estimated Ship Date: Nov 21, 2025 if ordered today

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Oil Ring Support Rail, 4.061-4.125 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-406

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Estimated Ship Date: Nov 21, 2025 if ordered today

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Oil Ring Support Rail, 4.470-4.530 in. Bore, Spring Steel, Each

Part Number: ROS-ORS-447

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Estimated Ship Date: Nov 21, 2025 if ordered today

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PISTON PK, PISTON & SPRING LOW/REVERS, 1999-2022

Part Number: MOP-05179008AB

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Piston/Spring Kit, Stainless Conv., 0.440" Lift, HONDA, TRX 450R/ER, 2006-2014

Part Number: KPM-30-32600

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Piston/Spring Kit, Stainless Conv., 0.350" Lift, Various Honda® 250cc Applications

Part Number: KPM-30-33700

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Piston/Spring Kit, Stainless Conv., 0.395" Lift, Yamaha®, YZ 250F, 2014-2016

Part Number: KPM-80-81200

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Piston/Spring Kit, Stainless Conv., 0.380" Lift, Yamaha®, YFZ 450, 2004-2009

Part Number: KPM-80-82700

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Piston/Spring Kit, Stainless Conv., 0.380" Lift, Yamaha®, YFZ 450R, 2009-2020

Part Number: KPM-80-82750

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Piston/Spring Kit, Stainless Conv., 0.380" Lift, YAMAHA® VARIOUS 450cc 2006-'15

Part Number: KPM-80-82000

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Piston/Spring Kit, Stainless Conv., 0.380" Lift, YAMAHA® VARIOUS 450cc 2003-'06

Part Number: KPM-80-81900

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Piston/Spring Kit, Stainless Conv., 0.440" Lift, HONDA, TRX 450R, 2004-2005

Part Number: KPM-30-32500

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Piston/Spring Kit, Stainless Conv., 0.440" Lift, HONDA, CRF 450X, 2005-2017

Part Number: KPM-30-32900

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Piston/Spring Kit, Stainless Conv., 0.440" Lift, HONDA, CRF 450R, 2007-2008

Part Number: KPM-30-33100

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Piston/Spring Kit, Stainless Conv., 0.440" Lift, Various Suzuki® 400cc Applications

Part Number: KPM-60-61850

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Estimated Ship Date: Nov 3, 2025 if ordered today

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