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-35640 PART NUMBER
Eagle 35640 SB Chevy 415/421 Rotating Assembly, 5.6cc JE Dome Pistons, 2-PC Rear SealSpecial Price $2,961.95 Regular Price $3,021.95
Small Block Chevy 415 421 Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft, 3.875 Stroke, 400 Main, Eagle 6.000 H-Beam Rods, JE 2618 Forged +5.6cc Dome Pistons, 2-PC Rear Seal, Performance Rings and Bearings Included Learn More -
ESP-35650 PART NUMBER
Eagle 35650 SB Chevy 415/421 Pro Rotating Assembly, 10.8cc JE Dome Pistons, 2-PC Rear SealSpecial Price $2,961.95 Regular Price $3,021.95
Small Block Chevy 415/421 Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft, 3.875 Stroke, 400 Main, Eagle 6.000 H-Beam Rods, JE 2618 Forged +10.8cc Dome Pistons, 2-PC Rear Seal, Performance Rings and Bearings Included Learn More -
ESP-12046 PART NUMBER
Eagle 12046 SBC 415/421 Pro Rotating Assembly, -22cc Mahle Dish Pistons *350 Main*Special Price $2,548.95 Regular Price $2,608.95
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 -22cc Dish Pistons, 2-PC Rear Seal, Performance Rings and Bearings Included Learn More -
ESP-35550 PART NUMBER
Eagle 35550 SB Chevy 415/421 Pro Rotating Assembly, 10.8cc JE Dome Pistons, 350 MainsSpecial Price $2,980.95 Regular Price $3,040.95
Small Block Chevy 415/421 Pro Rotating Assembly Kit, Eagle 4340 Forged steel Crankshaft, 3.875 Stroke, 350 Main, Eagle 6.000 H-Beam Rods, JE 2618 Forged +10.8cc Dome Pistons, 2-PC Rear Seal, Performance Rings and Bearings Included
Learn More -
ESP-35540 PART NUMBER
Eagle 35540 SB Chevy 415/421 Stroker Rotating Assembly, 5.6cc JE Dome Pistons, 350 MainsSpecial Price $2,980.95 Regular Price $3,040.95
Small Block Chevy 415/421 Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft, 3.875 Stroke, 350 Main, Eagle 6.000 H-Beam Rods, JE 2618 Forged +5.6cc Dome Pistons, 2-PC Rear Seal, Performance Rings and Bearings Included Learn More