1990 Engine Kits & Rotating Assemblies

Repair Kit, Top End, 66.420mm Bore, 6.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40003-2K

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Estimated Ship Date: Apr 13, 2026 if ordered today

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S&S Cycle 84-99 BT w/ Stock Heads 3-5/8in Bore Cylinder Set - Natural

Part Number: SSY-91-7000

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Estimated Ship Date: Apr 13, 2026 if ordered today

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S&S Cycle 84-99 BT 96in 3-5/8in Big Bore Cylinder & Piston Kit For S&S SH96 Engines - Natural

Part Number: SSY-91-7207

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Estimated Ship Date: Apr 13, 2026 if ordered today

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84-99 BT 4-1/8in Bore Cylinder Set For 124in V-Series Engine - Polished

Part Number: SSY-910-0273

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Estimated Ship Date: Apr 13, 2026 if ordered today

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S&S Cycle 84-99 BT w/ Stock Heads 3-1/2in Bore Cylinder & Piston Kit - Natural

Part Number: SSY-910-0179

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Repair Kit, Top End, 83.950mm Bore, 9.50 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40005-4K

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Estimated Ship Date: Apr 13, 2026 if ordered today

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S&S Cycle 84-99 BT 4-1/8in Bore Cylinder Set w/ Pistons For 117in V-Series Engines - Natural

Part Number: SSY-910-0290

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Repair Kit, Top End, 53.95mm Bore, 8.30 to 1 Compression Ratio, Suzuki, Kit

Part Number: NTI-NX-30000-BK

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Estimated Ship Date: Apr 13, 2026 if ordered today

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S&S Cycle 84-99 BT w/ Stock Heads 88in 3 5/8in Big Bore Cylinder & Piston Kit - Wrinkle Black

Part Number: SSY-91-7502

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Estimated Ship Date: Apr 13, 2026 if ordered today

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S&S Cylinder 84-99 BT w/Super Stock Cylinder Heads 80in 3 1/2in Bore Cylinder & Piston Kit - WBlack

Part Number: SSY-91-7713

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Estimated Ship Date: Apr 13, 2026 if ordered today

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S&S Cycle 84-99 BT 4 1/8in Bore Cylinder & Piston Kit For S&S V117 Engine - WBlack

Part Number: SSY-910-0225

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Estimated Ship Date: Apr 13, 2026 if ordered today

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S&S Cycle 86-21 Sportster Models High Compression 1250cc Conversion Kit - Wrinkle Black

Part Number: SSY-910-0692

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Estimated Ship Date: Apr 13, 2026 if ordered today

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KIT-SBC 383 3.750/4.035

Part Number: MAN-290035

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Estimated Ship Date: Apr 16, 2026 if ordered today

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KIT-BBC 555 4.250/4.560 -3cc F

Part Number: MAN-28555

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Estimated Ship Date: Apr 16, 2026 if ordered today

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Engine Rotating Assembly, Street/Strip, Cast Crank, Forged Pistons, I-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-13051L040

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Estimated Ship Date: Apr 24, 2026 if ordered today

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Engine Rotating Assembly, Street/Strip, Cast Crank, Forged Pistons, I-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-13021L040

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Estimated Ship Date: Apr 24, 2026 if ordered today

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ROTATING ASSEMBLY

Part Number: ESP-14642125

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Estimated Ship Date: Apr 24, 2026 if ordered today

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Engine Rotating Assembly, High Compression, Forged Crank, Forged Piston, H-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-36130030

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Estimated Ship Date: Apr 24, 2026 if ordered today

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Engine Rotating Assembly, Competition, Forged Pistons, Forged Crank, H-Beam Rods, Ford, Small Block Windsor, Kit

Part Number: ESP-B14013030

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Estimated Ship Date: Apr 24, 2026 if ordered today

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ROTATING ASSEMBLY

Part Number: ESP-B13057L03053

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Estimated Ship Date: Apr 24, 2026 if ordered today

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Rotating Assembly, Street/Strip, Cast Steel Crankshaft, Forged Flat Pistons, 1 pc. Seal, Chevy, 383, Kit

Part Number: ESP-B13057L03068

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Estimated Ship Date: Apr 24, 2026 if ordered today

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Engine Rotating Assembly, Competition, Forged Crank, Forged Pistons, H-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-12101030

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Estimated Ship Date: Apr 24, 2026 if ordered today

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ROTATING ASSEMBLY

Part Number: MAN-290935

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Estimated Ship Date: Apr 16, 2026 if ordered today

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BALANCED ROTATING ASSEMBLY

Part Number: ESP-B16351LA030

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Estimated Ship Date: Apr 24, 2026 if ordered today

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KIT-BBC 565 4.250/4.600 -3cc F

Part Number: MAN-28565X

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Estimated Ship Date: Apr 16, 2026 if ordered today

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