Summit Racing™ Pro LS Forged Pistons

4.61 out of 5 stars 66 Customer Reviews

The Summit Racing Pro LS forged pistons are affordable and built to withstand the rigors of high boost and nitrous. These pistons are forged from Premium 2618 alloy

The Summit Racing Pro LS forged pistons are affordable and built to withstand the rigors of high boost and nitrous. These pistons are forged from Premium 2618 alloy - the strongest made. They have specially profiled piston skirts, which allow them to run a tight piston-to wall-clearance for maximum ring seal and minimal friction. They have many other high-tech features too! • Maximum ring-land thickness for power-adders • Dedicated forgings for the best strength-to-weight ratio • Multiple compression ratios specifically targeted for 4.8L, 5.3L, 5.7L, and 6.0L engines • Designed around Premium file fit rings with Gas-Nitride or Plasma steel tops and ductile Napier second rings • Available in versions for Gen. 3 Press-fit, Gen. 4 Floating, and Aftermarket 6.125 rods • Standard and Stroker versions available • Generous valve reliefs that work with both Cathedral port AND Rectangle port heads • Pressure-fed pin-oiling • Pressure seal groove in 2nd ring land for increased seal. • High-Speed brush deburring to remove sharp edges that cause detonation • Ultra-Modern 2.250 pin forgings clear the reluctor rings with stroker cranks • Durable Chromium Steel wristpins. • Replacement Singles Available

Results 1 - 14 of 14

Summit Racing™ Pro LS Forged Pistons SUM-326943780-2F

Summit Racing™ Pro LS Forged Pistons SUM-326943780-2F

Pro LS 2618 Forged Pistons. 3.780 bore, 1.326 C.H., 2cc dome, Std. Stroke, .Gen.4 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-326943780-2F

5.0 out of 5 stars ( 3 )

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Summit Racing™ Pro LS Forged Pistons SUM-326945780-7P

Pro LS 2618 Forged Pistons. 3.780 bore, 1.326 C.H., 7cc dish, Std. Stroke, .945 pin Press or Float, NA/Boost/Nitrous, Coated, 4.8L 5.3L Vortec Truck

Part Number: SUM-326945780-7P

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Summit Racing™ Pro LS Forged Pistons SUM-326945780-2P

Pro LS 2618 Forged Pistons. 3.780 bore, 1.326 C.H., 2cc dome, Std. Stroke, .945 pin Press or Float, NA/Boost/Nitrous, Coated, 4.8L 5.3L Vortec Truck

Part Number: SUM-326945780-2P

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Summit Racing™ Pro LS Forged Pistons SUM-2999273780-7

Pro LS 2618 Forged Pistons. 3.780 bore, 1.299 C.H., 7cc dish, Std. Stroke, .6.125 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-2999273780-7

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Summit Racing™ Pro LS Forged Pistons SUM-326943780-7F

Pro LS 2618 Forged Pistons. 3.780 bore, 1.326 C.H., 7cc dish, Std. Stroke, .Gen.4 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-326943780-7F

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Summit Racing™ Pro LS Forged Pistons SUM-2999273780-2

Pro LS 2618 Forged Pistons. 3.780 bore, 1.299 C.H., 2cc dome, Std. Stroke, .6.125 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-2999273780-2

3.6 out of 5 stars ( 5 )

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Summit Racing™ Pro LS Forged Pistons SUM-326S43780-7F

Piston, Pro LS, 3.780 in. Bore, Forged Aluminum, Dish, 0.943 Pin Diameter, Chevy, Each

Part Number: SUM-326S43780-7F

Not Yet Reviewed

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Summit Racing™ Pro LS Forged Pistons SUM-326S43780-2F

Piston, Pro LS, 3.780 in. Bore, Forged Aluminum, Dome, 0.943 Pin Diameter, Chevy, Each

Part Number: SUM-326S43780-2F

Not Yet Reviewed

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Summit Racing™ Pro LS Forged Pistons SUM-1109273780-5

Pro LS 2618 Forged Piston, 3.780 bore, 1.110 C.H., 5cc dish, 4.000in. Stroke, 6.125 Rod, NA/Boost/Nitrous, Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-1109273780-5

Not Yet Reviewed

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Summit Racing™ Pro LS Forged Pistons SUM-326S45780-2P

Piston, Pro LS, 3.780 in. Bore, Forged Aluminum, Dome, 0.945 Pin Diameter, Chevy, Each

Part Number: SUM-326S45780-2P

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Summit Racing™ Pro LS Forged Pistons SUM-299S273780-7

Piston, Pro LS, 3.780 in. Bore, Forged Aluminum, Dish, 0.927 Pin Diameter, Chevy, Each

Part Number: SUM-299S273780-7

Not Yet Reviewed

Estimated Ship Date: Jul 7, 2025 if ordered today

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Estimated Ship Date: Jul 7, 2025 if ordered today

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Summit Racing™ Pro LS Forged Pistons SUM-2999273780-7

5 out of 5 stars ( 1 )

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Summit Racing™ Pro LS Forged Pistons SUM-299S273780-2

Piston, Pro LS, 3.780 in. Bore, Forged Aluminum, Dome, 0.927 Pin Diameter, Chevy, Each

Part Number: SUM-299S273780-2

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Summit Racing™ Pro LS Forged Pistons SUM-326S45780-7P

Piston, Pro LS, 3.780 in. Bore, Forged Aluminum, Dish, 0.945 Pin Diameter, Chevy, Each

Part Number: SUM-326S45780-7P

Not Yet Reviewed

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Summit Racing™ Pro LS Forged Pistons SUM-110927378012

Pro LS 2618 Forged Piston, 3.780 bore, 1.110 C.H., 12cc dish, 4.000in. Stroke, 6.125 Rod, NA/Boost/Nitrous,Coated, 4.8L 5.3L LS Vortec Truck, Set of 8

Part Number: SUM-110927378012

Not Yet Reviewed

Estimated Ship Date: Jun 23, 2025 if ordered today

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Estimated Ship Date: Jun 23, 2025 if ordered today

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