Engine Rotating Assemblies & Rebuild Kits

BOTTOM END KIT Polaris

Part Number: HRI-HR00121

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, KTM, 65 SX, Kit

Part Number: HRI-CBK0085

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Estimated Ship Date: Mar 30, 2026 if ordered today

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BOTTOM END KIT Polaris

Part Number: HRI-HR00117

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, YZ85, Kit

Part Number: HRI-CBK0076

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Estimated Ship Date: Mar 31, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, for use on Honda®, Kit

Part Number: HRI-CBK0138

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, Suzuki, RM85, Kit

Part Number: HRI-CBK0103

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Estimated Ship Date: Mar 31, 2026 if ordered today

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BOTTOM END KIT Polaris

Part Number: HRI-HR00123

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Estimated Ship Date: Mar 31, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, Kawasaki, Kit

Part Number: HRI-CBK0193

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Estimated Ship Date: Mar 30, 2026 if ordered today

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BOTTOM END KIT Polaris

Part Number: HRI-HR00113

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, KTM, 85 SX, Kit

Part Number: HRI-CBK0107

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, Kit

Part Number: HRI-CBK0205

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, KTM, 250 SX-F, Kit

Part Number: HRI-CBK0071

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, Suzuki, Kit

Part Number: HRI-CBK0165

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Estimated Ship Date: Mar 31, 2026 if ordered today

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BOTTOM END KIT

Part Number: HRI-CBK0231

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Estimated Ship Date: Mar 31, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, KTM, Kit

Part Number: HRI-CBK0006

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Estimated Ship Date: Tomorrow if ordered today

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Pro LS Piston and Rod Kit, 326 Cid., 3.785 bore, Standard 3.622 stroke, 6.098 rod, 7cc dish, 9.7:1 @ 61cc, 9.3:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR367857

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Pro LS Piston and Rod Kit, 332 Cid., 3.820 bore, Standard 3.622 stroke, 6.098 rod, 2cc dome, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR368202

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Estimated Ship Date: Apr 28, 2026 if ordered today

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Pro LS 4340 Piston and Rod Kit, 364 Cid., 3.810 bore, 4.000 stroke, 6.125 rod, 12cc dish, 10:2 @ 61cc, 9.7:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR4081012

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Estimated Ship Date: Apr 16, 2026 if ordered today

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BOTTOM END KIT Yamaha

Part Number: HRI-CBK0078

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Pro LS 4340 Piston and Rod Kit, 359 Cid., 3.780 bore, 4.000 stroke, 6.125 rod, 12cc dish, 10:1 @ 61cc, 9.6:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR4078012

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BOTTOM END KIT

Part Number: HRI-CBK0052

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Estimated Ship Date: Mar 31, 2026 if ordered today

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Pro LS 4340 Piston and Rod Kit, 360 Cid., 3.785 bore, 4.000 stroke, 6.125 rod, 12cc dish, 10:1 @ 61cc, 9.6:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR4078512

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Pro LS Piston and Rod Kit, 332 Cid., 3.820 bore, Standard 3.622 stroke, 6.098 rod, 7cc dish, 9.9:1 @ 61cc, 9.4:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR368207

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Pro LS Piston and Rod Kit, 326 Cid, 3.785 bore, Standard 3.622 stroke, 6.098 rod, 2cc dome, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR367852

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Rebuild Kit, Complete Bottom End, for use on Honda®, CR85R, CR85RB Expert, Kit

Part Number: HRI-CBK0104

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Estimated Ship Date: Mar 30, 2026 if ordered today

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