Engines & Components

Crankshaft, Chev SB, 454 Main, 4.750"

Part Number: HRS-H454756722T

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Estimated Ship Date: Nov 28, 2025 if ordered today

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Valve Springs, Valve Spring, Dual, 1.300

Part Number: HRS-98335

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Pistons, SB Chev, DM, 4.040"

Part Number: HRS-840425613

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Pistons, SB Chev, Inv Dome, 4.040"

Part Number: HRS-840442128

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Pistons, ProMax 2618 Race Pistons, Forged, Flat Top, 4.040 in. Bore, Chevy Small Block, Set of 8

Part Number: HRS-840455305

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Pistons, ProMax 2618 Race Pistons, Forged, Flat, 4.060 in. Bore, Chevy Small Block, Set of 8

Part Number: HRS-840612305

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Pistons, SB Chev, DM, 4.060"

Part Number: HRS-840612608

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Pistons, Forged, Flat, 4.060 in. Bore, Chevy, Set of 8

Part Number: HRS-840625305

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Pistons, SB Chev, DM, 4.060"

Part Number: HRS-840625613

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Pistons, SB Chev, Inv Dome, 4.060"

Part Number: HRS-840642128

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Cylinder Head, 250cc LS1/LS6, Aluminum, 61cc Chamber, 250cc Runner, 2.080 in. Intake Valve, 1.600 in. Exhaust Valve, 0.650 in. Max Lift, Chevy, Each

Part Number: HPE-HPLS1250

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Pistons, ProMax 2618 Race Pistons, Forged, Flat Top, 4.030 in. Bore, Chevy LS, Set of 8

Part Number: HRS-830311304

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Pistons, ProMax 2618 Race Pistons, Forged, Dish, 4.070 in. Bore, Chevy LS, Set of 8

Part Number: HRS-830711112

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Pistons, Chev LS, Inv Dome, 4.125" Bore

Part Number: HRS-831204114

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Pistons, Chev LS, Inv Dome, 4.125" Bore

Part Number: HRS-831204126

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Pistons, Chev LS, Flat Top, 4.125" Bore

Part Number: HRS-831204305

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Pistons, ProMax 2618 Race Pistons, Forged, Dish, 4.125 in. Bore, Chevy LS, Set of 8

Part Number: HRS-831211112

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Pistons, ProMax 2618 Race Pistons, Forged, Dish, 4.005 in. Bore, Chevy LS, Set of 8

Part Number: HRS-839011112

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Pistons, ProMax 2618 Race Pistons, Forged, Flat Top, 4.005 in. Bore, Chevy LS, Set of 8

Part Number: HRS-839011304

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Pistons, ProMax 2618 Race Pistons, Forged, Dish, 3.905 in. Bore, Chevy LS, Set of 8

Part Number: HRS-839511112

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Pistons, SB Ford, DM, 4.040"

Part Number: HRS-860423601

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Piston, SB Ford, Inverted Dome, 4.125"

Part Number: HRS-861223128

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Pistons, Chev SB, Flat Top, 4.165"

Part Number: HRS-841606206

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Pistons, Chev SB, DM, 4.165"

Part Number: HRS-841606503

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ROLLER LIFTERS

Part Number: HRS-91240

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Estimated Ship Date: Nov 28, 2025 if ordered today

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