Summit Racing™ Pro LS Piston and Rod Kits SUM-PR4004020

Name: Summit Racing™ Pro LS Piston and Rod Kits
Brand: Summit Racing
SKU: SUM-PR4004020
Price: 1499.97 USD
Availability: OutOfStock
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Part Number: SUM-PR4004020

$1,499.97

Summit Racing™ Pro LS Piston and Rod Kits

Pro LS 4340 Piston and Rod Kit, 410 Cid., 4.040 bore, 4.000 stroke, 6.125 rod, 20cc dish, 9.8:1 @ 65cc, 9.4:1 @ 70cc, File-Fit Rings
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Summit Racing™ Pro LS Piston and Rod Kits SUM-PR4004020

SUM-PR4004020

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Part Number: SUM-PR4004020

Estimated Ship Date: May 4, 2026

$1,499.97

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Overview

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Kit/Combo Contents

Q&A

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Estimated Ship Date: May 4, 2026 Would you rather pick it up?

Overview

Brand:

Summit Racing

Manufacturer's Part Number:

SUM-PR4004020

Part Type:

Engine Rotating Kits

Product Line:

Summit Racing™ Pro LS Piston and Rod Kits

Summit Racing Part Number:

SUM-PR4004020

Actual Engine Displacement:

6.7L/410

Bore (in.):

4.040 in.

Bore (mm):

102.620mm

Engine Stroke (in.):

4.000 in.

Balanced:

Piston Material:

Forged aluminum

Piston Style:

Dish, with two valve reliefs

Harmonic Balancer Included:

Flexplate Included:

Flywheel Included:

Pistons Included:

Yes

Piston Head Volume (cc):

+20.00cc

Wrist Pin Style:

Press-fit or floating

Piston Rings Included:

Yes

Piston Ring Facing Material:

Nitride

Piston and Ring Oversize (in.):

0.040 in.

Piston and Ring Oversize (mm):

1.020mm

Crankshaft Included:

Connecting Rods Included:

Yes

Connecting Rod Length Center to Center (in.):

6.125 in.

Connecting Rod Material:

Forged 4340 steel

Connecting Rod Beam Style:

H-beam

Rod Bearings Included:

Main Bearings Included:

Cam Bearings Included:

Gaskets Included:

Oil Pump Included:

Camshaft Included:

Lifters Included:

Timing Chain and Gears Included:

Plastigage Included:

Assembly Lubricant Included:

Quantity:

Sold as a kit.

Notes:

File Fit rings included. Optional Thick Tool Steel pin upgrade recommended at 1000 horsepower boosted or 300+ nitrous.

Summit Racing™ Pro LS Piston and Rod Kits

Summit Racing™ Pro LS piston and rod kits deliver industry-leading fit, finish, and durability at an affordable price. These assemblies are tested to over 1,200 hp in turbo applications. They're available in a broad range of fitment and performance options.

Standard features and specs may include:

* 4340 forged H-beam connecting rods
* Designed for 5,000 ft./min. average piston speed in street and drag applications
* 7/16 ARP 2000 rod bolts with 200,000 psi tensile strength; dual-ribbed caps for maximum strength
* Added stroker clearance and balanced to within +/- 1 gram per end
* Full-floating and precision-honed in the USA to +/- .0001 in.
* 2618 forged aluminum pistons
* Ultra-modern 2618 alloy forgings for boost and nitrous with maximum ring land thickness
* Pressure-fed pin oiling with durable chromium steel wrist pins
* Specially profiled and coated piston skirts for stroker applications with tight piston-to-wall clearance
* Generous valve reliefs for extra piston-to-valve clearance accommodate cathedral and rectangle heads
* Precision wrist pins and retainers
* Premium steel piston rings
* Steel top rings designed for maximum life with boost and nitrous
* File-fit rings for maximum ring seal, reduced friction, and tensions optimized for wet-sump engines
* Martensitic ductile Napier-hook second rings for strength and maximum oil control