Engine Kits & Rotating Assemblies

Pro LS Piston and Rod Kit, 371 Cid., 4.040 bore, 3.622 stroke, 6.125 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR36L0402

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Pro LS Piston and Rod Kit, 330 Cid., 3.810 bore, Standard 3.622 stroke, 6.125 rod, 7cc dish, 9.8:1 @ 61cc, 9.4:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR36L8107

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Pro LS Piston and Rod Kit, 332 Cid., 3.820 bore, Standard 3.622 stroke, 6.125 rod, 7cc dish, 9.9:1 @ 61cc, 9.4:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR36L8207

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 378 Cid., 4.075 bore, 3.622 stroke, 6.125 rod, 12cc dish, 9.9:1 @ 65cc, 9.4:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR36L08012

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 378 Cid., 4.080 bore, 3.622 stroke, 6.125 rod, 2cc dome, 11.6:1 @ 65cc, 10.9:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR36L0802

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Top End Engine Kits CYL WORKS BIG BORE KIT POLARIS CYL WORKS BIG BORE KIT POLARIS RZR 800

Part Number: CLW-61002-K01

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

PERFORMANCE, 131" KIT - BLACK FINS M8

Part Number: SSY-910-0763

Not Yet Reviewed

Estimated Ship Date: Sep 17, 2025 if ordered today

• Drop Ship
• Free Shipping
• $10.00 Summit Bucks
• Special Order

VERTEX COMPLETE ENGINE REBUILD KIT

Part Number: VPX-WR00035

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 12.80 to 1 Compression, KTM, Kit

Part Number: VPX-WR00031

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 12.00 to 1 Compression, for use on Honda®, Kit

Part Number: VPX-WR101-032

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

VERTEX COMPLETE ENGINE REBUILD KIT

Part Number: VPX-WR101-076

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 8.80 to 1 Compression, Kawasaki, Kit

Part Number: VPX-WR101-165

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

VERTEX COMPLETE ENGINE REBUILD KIT

Part Number: VPX-WR101-184

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 9.20 to 1 Compression, Yamaha, Kit

Part Number: VPX-WR101-135

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 9.20 to 1 Compression, Yamaha, Kit

Part Number: VPX-WR101-136

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 8.80 to 1 Compression, Kawasaki, Kit

Part Number: VPX-WR101-164

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

VERTEX COMPLETE ENGINE REBUILD KIT

Part Number: VPX-WR101-166

Not Yet Reviewed

Estimated Ship Date: Sep 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BOTTOM END KIT Polaris

Part Number: HRI-HR00106

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BOTTOM END KIT Polaris

Part Number: HRI-HR00111

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BOTTOM END KIT Polaris

Part Number: HRI-HR00118

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BOTTOM END KIT Polaris

Part Number: HRI-HR00123

Not Yet Reviewed

Estimated Ship Date: Sep 10, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Garage Buddy Engine Rebuild, Bashee

Part Number: WIS-PWR100-655

Not Yet Reviewed

Estimated Ship Date: Sep 22, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Garage Buddy Engine Rebuild, Banshee

Part Number: WIS-PWR100-660

Not Yet Reviewed

Estimated Ship Date: Sep 22, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BOTTOM END KIT Polaris

Part Number: HRI-HR00109

Not Yet Reviewed

Estimated Ship Date: Sep 9, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BOTTOM END KIT Polaris

Part Number: HRI-HR00116

Not Yet Reviewed

Estimated Ship Date: Sep 9, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order