CNC-Motorsports offers the best selection of Small Block Chevy 415-421 rotating assembly kits. We offer street kits with pump gas pistons to wild fully forged rotating assembly kits to meet your racing needs. We offer quality name brands such as; Eagle, Scat, Callies, Compstar, Crower, Lunati, JE/SRP, Diamond, Wiseco, Mahle CP and Keith Black to name a few. CNC-Motorsports can customize any stroker kit to meet your specific needs. All balanced rotating assembly kits are completed in house by CNC-Motorsports. If you don’t see the stroker kit you're wanting feel free to call or email our experienced staff today.
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ESP-12032 PART NUMBER
Eagle 12032 SBC 415/421 Pro Competition Rotating Assembly Kit, -5cc Mahle Flat Top PistonsSpecial Price $2,457.95 Regular Price $2,507.95
SB Chevy 415/421 Stroker Pro Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.875 Stroke, 400 Main, Eagle 6.000 H-Beam Rods, Mahle 4032 Forged -5cc Flat Top Pistons, 2-PC Rear Seal, Performance Rings and Bearings Included
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ESP-12132 PART NUMBER
Eagle 12132 SB Chevy 415/421 Rotating Assembly Kit, -5cc Mahle Flat Top Pistons, 350 MainSpecial Price $2,476.95 Regular Price $2,526.95
SB Chevy 415/421 Stroker Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.875 Stroke, 350 Main, Eagle 6.000 H-Beam Rods, Mahle 4032 Forged -5cc Flat top Pistons, 2-PC Rear Seal, Performance Rings and Bearings Included Learn More -
CNC-1249-MR PART NUMBER
CNC SB Chevy 415/421 Molnar Rotating Assembly - 12.0:1 Mahle Flat Top Pistons$2,899.95
SB Chevy, Molnar 4340 Forged Crankshaft 3.875 Stroke, 350 or 400 Main, 6.000 H Beam Rods, Mahle -5cc Flat Top Pistons, 2-PC Seal
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CNC-1256-MR PART NUMBER
CNC SB Chevy 415/421 Molnar Rotating Assembly - 12.0:1 JE Flat Top Pistons$3,250.95
SB Chevy, Molnar 4340 Forged Crankshaft 3.875 Stroke, 350 or 400 Main, 6.000 H Beam Rods, JE -5cc Flat Top Pistons, 2-PC Seal
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CNC-1261-MR PART NUMBER
CNC SB Chevy 415/421 Molnar Rotating Assembly - 12.0:1 SRP Professional Flat Top Pistons$2,950.95
SB Chevy, Molnar 4340 Forged Crankshaft 3.875 Stroke, 350 or 400 Main, 6.000 H Beam Rods, SRP Professional -5cc Flat Top Pistons, 2-PC Seal
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