Engine Rotating Assemblies & Rebuild Kits

Pro LS 4340 Piston and Rod Kit, 347 Cid., 3.903 bore, 3.622 stroke, 6.098 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings

Part Number: SUM-PR369033

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 371 Cid., 4.040 bore, 3.622 stroke, 6.098 rod, 12cc dish, 9.8:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR3604012

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 410 Cid., 4.040 bore, 4.000 stroke, 6.125 rod, 8cc dish, 11.2:1 @ 65cc, 10.6:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR400408

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 408 Cid., 4.030 bore, 4.000 stroke, 6.125 rod, 20cc dish, 9.8:1 @ 65cc, 9.4:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR4003020

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 403 Cid., 4.005 bore, 4.000 stroke, 6.125 rod, 8cc dish, 11:1 @ 65cc, 10.4:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR400058

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 346 Cid., 3.898 bore, 3.622 stroke, 6.125 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings

Part Number: SUM-PR36L8983

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS 4340 Piston and Rod Kit, 416 Cid., 4.070 bore, 4.000 stroke, 6.125 rod, 6cc dish, 11.5:1 @ 65cc, 10.9:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR400706

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Pro LS Piston and Rod Kit, 332 Cid., 3.820 bore, Standard 3.622 stroke, 6.125 rod, 2cc dome, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR36L8202

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 3.551 in. Bore, Standard Rod, Standard Main, Ford, 5.4, Kit

Part Number: FEM-205-6953M300

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 4.110 in. Bore, Standard Rod, Standard Main, AMC, 360, Kit

Part Number: FEM-205715M-300

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Repair Kit, Top End, 73.950mm Bore, 9.00 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10002K

Not Yet Reviewed

Estimated Ship Date: Nov 18, 2025 if ordered today

• Drop Ship
• Special Order

Engine Re-Ring, Moly, 4.250 in. Bore, .010 in. Rod, .010 in. Main, Chevy, 454, Kit

Part Number: FEM-205-6319M011

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-30008K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Top End Engine Kit, Sidewinder Big Bore, Black Wrinkle Finish, 4 in., Forged Piston, Harley-Davidson®, Kit

Part Number: SSY-910-0651

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Re-Ring, Cast, 4.360 in. Bore, Standard Rod, Ford, 460, Kit

Part Number: FEM-2051123-00

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 3.736 in. Bore, Standard Rod, Standard Main, Chevy, 305, Kit

Part Number: FEM-MK6026E-000

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

BOTTOM END KIT Polaris

Part Number: HRI-HR00114

Not Yet Reviewed

Estimated Ship Date: Nov 10, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BOTTOM END KIT Polaris

Part Number: HRI-HR00117

Not Yet Reviewed

Estimated Ship Date: Nov 10, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 89.960mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10000K

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: FEM-205622AM-300

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 4.030 in. Bore, Standard Rod, Standard Main, Ford, 351W, Kit

Part Number: FEM-205-6117M300

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 3.940 in. Bore, .010 in. Rod, .010 in. Main, Chrysler, Dodge, Plymouth, 318, Kit

Part Number: FEM-205717M-311

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 4.030 in. Bore, .020 in. Rod, .020 in. Main, Ford, 351M, Kit

Part Number: FEM-205624AM-322

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 4.030 in. Bore, .010 in. Rod, .010 in. Main, Chevy, 327, Kit

Part Number: FEM-205662M-311

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Cast, 3.875 in. Bore, Standard Rod, Pontiac, 350, Kit

Part Number: FEM-205121-00

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping