Engine Kits & Rotating Assemblies

TOP END KIT TWIN CYLINDER 90.96/STD CAN

Part Number: NTI-NA-80010K

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Estimated Ship Date: Nov 20, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, YZ250, Kit

Part Number: HRI-CBK0135

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Estimated Ship Date: Nov 10, 2025 if ordered today

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BOTTOM END KIT Yamaha

Part Number: HRI-HR00124

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Estimated Ship Date: Nov 10, 2025 if ordered today

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STD BORE KIT

Part Number: CLW-10004-K02

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Estimated Ship Date: Nov 20, 2025 if ordered today

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STANDARD BORE CYLINDER KIT

Part Number: CLW-20010-K01

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Estimated Ship Date: Nov 20, 2025 if ordered today

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BIG BORE KIT

Part Number: CLW-11004-K01

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Estimated Ship Date: Nov 20, 2025 if ordered today

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Top End Engine Kits CYL WORKS BIG BORE POWER VALVE CYL WORKS BIG BORE POWER VALVE INCL SIDE VALVES YZ250 '99-1

Part Number: CLW-CW-PV-K02

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Estimated Ship Date: Nov 20, 2025 if ordered today

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BOTTOM END KIT

Part Number: WIS-WPC168

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Estimated Ship Date: Nov 24, 2025 if ordered today

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TOP END KIT

Part Number: WIS-SK1321

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Engine Gasket Sets

Part Number: NAL-98403365

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Cyl. Head Serv. Kit, Honda®, XR 650L, 1993-2018

Part Number: KPM-30-33490

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Cyl. Head Serv. Kit, Honda®, Various 250'S, 2004-2017

Part Number: KPM-30-33300

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Cyl. Head Serv. Kit, Yamaha®, Various 660's, 2001-2008

Part Number: KPM-80-82390

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Cyl. Head Serv. Kit, Yamaha®, WR/ YZ 250F, 2001-2013

Part Number: KPM-80-82400

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Cyl. Head Serv. Kit, Yamaha®, WR / YZ 250F/FX, 2014-2018

Part Number: KPM-80-82410

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Racing Spring Kit, Titanium, 0.430" Lift, Yamaha®, YXZ1000R, 2016-2023

Part Number: KPM-80-82900

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Racing Spring Kit, HT Steel, 0.430" Lift, Yamaha®, YXZ1000R, 2016-2023

Part Number: KPM-80-82950

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Cyl. Head Serv. Kit, Yamaha®, Various 450'S, 2006-2020

Part Number: KPM-80-82060

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Cyl. Head Serv. Kit, Yamaha®, YZ 450F/FX, 2014-2019

Part Number: KPM-80-82070

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Cyl. Head Serv. Kit, Yamaha®, Various 700'S, 2006-2020

Part Number: KPM-80-82080

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Cyl. Head Serv. Kit, Kawasaki®, KX 450F , 2009-2015

Part Number: KPM-40-41470

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Cyl. Head Serv. Kit, Kawasaki®, KX 450F , 2016

Part Number: KPM-40-41480

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Cyl. Head Serv. Kit, Kawasaki®, KX250F, 2009-2016

Part Number: KPM-40-41520

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Racing Spring Kit, HT Steel, 0.630" Lift, Harley-Davidson®, Milwaukee-Eight, 2017-'24

Part Number: KPM-20-23850

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Racing Spring Kit, HT Steel, 0.450" Lift, Polaris®, Various 4 cyl., 2020-2023

Part Number: KPM-82-86060

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