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Diamond Pistons Race Series 21544-RS-8 Pistons, Dish, +15 cc, LS2K Series, Forged Aluminum, 4.125 in. Bore, Chevy, LSX, Set of 8

SKU: DPP21544-RS-8

Pistons

Diamond Pistons Race Series 21544-RS-8 Pistons, Dish, +15 cc, LS2K Series, Forged Aluminum, 4.125 in. Bore, Chevy, LSX, Set of 8

SKU: DPP21544-RS-8

Pistons
A$3,395.27
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

IMPORTANT NOTICE: Note for Pistons, Rings, Rotors, Rods and engine internalsUnless otherwise specified, some brands supply brake rotors, pistons, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.(keyword: pistons)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.Reference Information Reference Data (Provide these details to our support team) Brand Name/s Diamond Pistons, Diamond Racing Products StreetFX SKU dpp21544-RS-8 SFX Item ID 5525361 Accounting SKU dpp-21544-RS-8 Manufacturer SKU 21544-RS-8 Manufacturer UPC 686162209187 Alternative References 21544-RS-8, DPP-21544-RS-8


Data: v2 - Desc: v4.2 - Upd: 2026-10-14 03:34:49

Part Type

Pistons

Data: v4.2 - Upd: 2026-09-28 14:13:25

Specifications

Pistons, Dish, +15 cc, LS2K Series, Forged Aluminum, 4.125 in. Bore, Chevy, LSX, Set of 8

Diamond Pistons Race Series pistons will withstand some serious horsepower for your high performance engine. These 2618 aluminum pistons are not only significantly lighter than the factory pistons but also superior in strength. The 2618 alloy is specifically for high-horsepower, nitrous, and boosted engines making up to 2,000 hp.

Diamond Pistons Race Series pistons feature:
• 3D milling on piston crowns for "ready to install" finish
• Inside design forging with fully machined underskirts for maximum strength
• Valve pockets designed to work with most aftermarket cylinder heads
• Side gas ports for better ring seal
• Moly skirt coating for friction-loss and skirt-wear protection
• Premium H-13 wrist pins included; chamfered for round wire locks

Product Attributes
BrandDiamond Pistons
Manufacturer's Part Number21544-RS-8
Part TypePistons
Product LineDiamond Pistons Race Series Pistons
UPC686162209187
Piston Rings IncludedYes
Bore (in.)4.125 in.
Bore (mm)104.775mm
Stroke4.000 in.
Engine Stroke TypeStroked
Rod Length6.125 in.
Piston StyleDish, with two valve reliefs
Piston MaterialForged aluminum
Compression Height (in.)1.115 in.
Piston Head Volume (cc)+15.00cc
Wrist Pin StylePress-fit or floating
Wrist Pin Retainers IncludedYes
Wrist Pin IncludedYes
Pin Diameter (in.)0.927 in.
Piston Ring Thickness1.50mm x 1.50mm x 3.00mm
File FitNo
GaplessNo
Top Ring Thickness1.5mm
Top Ring MaterialStainless steel
Top Ring Facing MaterialC-23 PVD Chrome
Second Ring Thickness1.5mm
Second Ring MaterialCast iron
Second Ring Facing MaterialCast iron
Oil Ring Thickness3.0mm
Oil Ring MaterialCarbon steel
Oil Ring TensionStandard
RemanufacturedNo
QuantitySold as a set of 8.
NotesFor use on LSX race engines only.

Reference Information

Brand Name/s Diamond Pistons
StreetFX SKU dpp21544-RS-8
SFX Item ID 5525361
Supplier Item Code 5525361
Manufacturer SKU 21544-RS-8
Manufacturer UPC 686162209187
Alternative References LS2K

Compatibility

No specific fitment data available for this part. For clarification, please contact us.

Detailed Compatibility


Application Data
MakeCHEVROLET
Beginning Year1997
Ending Year2004
Engine TypeV8
Engine FamilyChevy small block Gen III/IV (LS-based engines)
Engine Size5.7L/350
Application NotesFor use on LSX race engines only.
MakeCHEVROLET
Beginning Year1999
Ending Year2007
Engine TypeV8
Engine FamilyChevy small block Gen III/IV (LS-based engines)
Engine Size4.8L/294
Application NotesFor use on LSX race engines only.
MakeCHEVROLET
Beginning Year1999
Ending Year2007
Engine TypeV8
Engine FamilyChevy small block Gen III/IV (LS-based engines)
Engine Size5.3L/325
Application NotesFor use on LSX race engines only.

This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.

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