Pistons - 6.9L/421 Actual Engine Displacement - 1.362 in. Compression Height (in.) - Free Shipping on Orders Over $125 at Summit Racing

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-2455-4155

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-2455-4155

Piston Set, 420 SBC 2-FX Series -21cc Dish Top Piston Set. 4.155 bore

Part Number: DMS-2-2455-4155

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

D.S.S. FX-Series Forged 4032 Alloy Pistons 1-2453-4155

Piston Set, 420 SBC 1-FX Series -16cc Dish Top Piston Set. 4.155 bore

Part Number: DMS-1-2453-4155

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

D.S.S. FX-Series Forged 4032 Alloy Pistons 1-2450-4155

Piston Set, 420 SBC 1-FX Series -5cc Flat Top Piston Set. 4.155 bore

Part Number: DMS-1-2450-4155

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons with XR Wrist Pins 3-2455-4155

Piston Set, 420 SBC 3-FX Series -21cc Dish Top Piston Set. 4.155 bore

Part Number: DMS-3-2455-4155

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons with XR Wrist Pins 3-2453-4155

Piston Set, 420 SBC 3-FX Series -16cc Dish Top Piston Set. 4.155 bore

Part Number: DMS-3-2453-4155

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

D.S.S. FX-Series Forged 4032 Alloy Pistons 1-2455-4155

Piston Set, 420 SBC 1-FX Series -21cc Dish Top Piston Set. 4.155 bore

Part Number: DMS-1-2455-4155

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-2453-4155

Piston Set, 420 SBC 2-FX Series -16cc Dish Top Piston Set. 4.155 bore

Part Number: DMS-2-2453-4155

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons 2-2450-4155

Piston Set, 420 SBC 2-FX Series -5cc Flat Top Piston Set. 4.155 bore

Part Number: DMS-2-2450-4155

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

D.S.S. FX-Series Forged 2618 Alloy Pistons with XR Wrist Pins 3-2450-4155

Piston Set, 420 SBC 3-FX Series -5cc Flat Top Piston Set. 4.155 bore

Part Number: DMS-3-2450-4155

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today