Engine Kits & Rotating Assemblies

Repair Kit, Top End, 81.45mm Bore, 6.00 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50001-6K

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Estimated Ship Date: Sep 29, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-40004-4K

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Repair Kit, Top End, 66.340mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NX-10026K1

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Repair Kit, Top End, 66.350mm Bore, 10.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40025KA

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Cylinder Head NAMURA TOP END REPAIR KIT NAMURA TOP END REPAIR KIT

Part Number: NTI-NA-10014K

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Estimated Ship Date: Sep 29, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-20030-BK

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Estimated Ship Date: Sep 23, 2025 if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22863B-1

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PLATE, REINFORCEMENT, 2014-2023

Part Number: MOP-68210592AA

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Racing Spring Kit, HT Steel, 0.450" Lift, Polaris®, Various 570's, 2014-2023

Part Number: KPM-82-86010

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Estimated Ship Date: Sep 15, 2025 if ordered today

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Racing Spring Kit, HT Steel, 0.520" Lift, Indian®, Challengers (All), 2020-2023

Part Number: KPM-82-85000

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Estimated Ship Date: Sep 15, 2025 if ordered today

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Racing Spring Kit, Titanium, 0.450" Lift, Polaris®, Various 570's, 2014-2023

Part Number: KPM-82-86000

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Estimated Ship Date: Sep 15, 2025 if ordered today

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Racing Spring Kit, Titanium, 0.450" Lift, Kawasaki®, KX 250's, 2020-2023

Part Number: KPM-40-41600

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Estimated Ship Date: Sep 15, 2025 if ordered today

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Racing Spring Kit, Titanium, 0.435" Lift, Honda®, CRF 250R/RX, 2018-2021

Part Number: KPM-30-33600

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Estimated Ship Date: Sep 15, 2025 if ordered today

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Repair Kit, Top End, 86.48mm Bore, 9.90 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10043K

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Estimated Ship Date: Sep 26, 2025 if ordered today

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Repair Kit, Top End, 88.95mm Bore, 11.00 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10004K

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Estimated Ship Date: Sep 26, 2025 if ordered today

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BIG BORE KIT CRF110

Part Number: BRM-411-HCF-1151

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Estimated Ship Date: Sep 30, 2025 if ordered today

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PISTON, A-SIZE, 2006-2010

Part Number: MOP-05191334AA

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Estimated Ship Date: Oct 6, 2025 if ordered today

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PISTON, A-SIZE, 2006-2017

Part Number: MOP-05191337AA

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Estimated Ship Date: Oct 6, 2025 if ordered today

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PISTON, B-SIZE, 2006-2017

Part Number: MOP-05191338AA

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Estimated Ship Date: Oct 6, 2025 if ordered today

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PISTON, B-SIZE, 2006-2020

Part Number: MOP-05191341AA

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Estimated Ship Date: Oct 6, 2025 if ordered today

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PISTON, C-SIZE, 2006-2020

Part Number: MOP-05191342AA

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Engine Re-Ring, Moly, 4.030 in. Bore, .030 in. Rod, Chevy, 350, Kit

Part Number: FEM-205630-33

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Estimated Ship Date: Sep 8, 2025 if ordered today

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Engine Re-Ring, Moly, 4.000 in. Bore, .030 in. Rod, .010 in. Main, Chevy, 350, Kit

Part Number: FEM-205630M-030

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Estimated Ship Date: Sep 8, 2025 if ordered today

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Engine Re-Ring, Moly, 4.000 in. Bore, .020 in. Rod, .020 in. Main, Chrysler, 360, Kit

Part Number: FEM-205622AM-022

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Estimated Ship Date: Sep 15, 2025 if ordered today

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Engine Re-Ring, Moly, 4.030 in. Bore, .010 in. Rod, .020 in. Main, Chrysler, 360, Kit

Part Number: FEM-205622AM-312

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Estimated Ship Date: Sep 15, 2025 if ordered today

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