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Diamond Pistons

Diamond Pistons Race Series 21526-RS-8 LS2K - 2000HP Rated - 2618 Material - Inboard Design - Coated Skirts - Includes H13 Pins and AP Rings

SKU: DPP21526-RS-8

Pistons
Diamond Pistons Race Series 21526-RS-8 LS2K - 2000HP Rated - 2618 Material - Inboard Design - Coated Skirts - Includes H13 Pins and AP Rings

Diamond Pistons

Diamond Pistons Race Series 21526-RS-8 LS2K - 2000HP Rated - 2618 Material - Inboard Design - Coated Skirts - Includes H13 Pins and AP Rings

SKU: DPP21526-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

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

Part Type

Pistons

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

Specifications

Product Attributes - Brand
Diamond Pistons
Product Attributes - Manufacturer's Part Number
21526-RS-8
Product Attributes - Part Type
Pistons
Product Attributes - Product Line
Diamond Pistons Race Series Pistons
Product Attributes - UPC
686162209002
Product Attributes - Piston Rings Included
Yes
Product Attributes - Bore (in.)
4.030 in.
Product Attributes - Bore (mm)
102.362mm
Product Attributes - Stroke
4.000 in.
Product Attributes - Engine Stroke Type
Stock/Stroked
Product Attributes - Rod Length
6.125 in.
Product Attributes - Piston Style
Flat top, with two valve reliefs
Product Attributes - Piston Material
Forged aluminum
Product Attributes - Compression Height (in.)
1.115 in.
Product Attributes - Piston Head Volume (cc)
+4.80cc
Product Attributes - Wrist Pin Style
Floating
Product Attributes - Wrist Pin Retainers Included
Yes
Product Attributes - Wrist Pin Included
Yes
Product Attributes - Pin Diameter (in.)
0.927 in.
Product Attributes - Piston Ring Thickness
1.50mm x 1.50mm x 3.00mm
Product Attributes - File Fit
Yes
Product Attributes - Gapless
No
Product Attributes - Top Ring Thickness
1.5mm
Product Attributes - Top Ring Material
Stainless steel
Product Attributes - Top Ring Facing Material
C-23 PVD Chrome
Product Attributes - Second Ring Thickness
1.5mm
Product Attributes - Second Ring Material
Ductile iron
Product Attributes - Second Ring Facing Material
Ductile iron
Product Attributes - Oil Ring Thickness
3.0mm
Product Attributes - Oil Ring Material
Stainless steel
Product Attributes - Oil Ring Tension
Standard
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a set of 8.
Product Attributes - Notes
Pistons are 2618 material.

Reference Information

Brand Name/s Diamond Pistons
StreetFX SKU dpp21526-RS-8
SFX Item ID 5525325
Supplier Item Code 5525325
Manufacturer SKU 21526-RS-8
Manufacturer UPC 686162209002
Alternative References LS2K, 2000HP, H13

Compatibility

Application Data
  • MakeCHEVROLET
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Application NotesFor use with 12 degree cylinder heads.
  • MakeCHEVROLET
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size7.4L/454
    Application NotesFor use with 12 degree cylinder heads.

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