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Diamond Pistons

Diamond Pistons Competition Series 11521-R1-8-H LS1 4.030B/1.115CD/Kit

SKU: DPP11521-R1-8-H

Pistons
Diamond Pistons Competition Series 11521-R1-8-H LS1 4.030B/1.115CD/Kit

Diamond Pistons

Diamond Pistons Competition Series 11521-R1-8-H LS1 4.030B/1.115CD/Kit

SKU: DPP11521-R1-8-H

Pistons
A$2,990.97
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 Competition Series pistons are for those looking to take their engine to a whole new level of power. These forged aluminum pistons are superior in strength and provide extra protection during the high-stresses of high-compression, forced induction, or nitrous.

Diamond Pistons Competition Series features:

* 3D milling on piston crowns for "ready-to-install" finish
* Generous valve pockets designed to work with stock or oversized valves and various cylinder heads
* Constructed from forged 4032 or 2618 aluminum alloy (where specified)
* Premium 8620 or H-13 steel wrist pins (where specified)

Part Type

Pistons

Data: v4.2 - Upd: 2026-09-28 14:12:50

Specifications

Product Attributes - Brand
Diamond Pistons
Product Attributes - Manufacturer's Part Number
11521-R1-8-H
Product Attributes - Part Type
Pistons
Product Attributes - Product Line
Diamond Pistons Competition Series Pistons
Product Attributes - UPC
193564373519
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
Stroked
Product Attributes - Actual Engine Displacement
6.7L/408
Product Attributes - Rod Length
6.125 in.
Product Attributes - Piston Style
Dish, with two valve reliefs
Product Attributes - Piston Material
Forged aluminum
Product Attributes - Compression Height (in.)
1.115 in.
Product Attributes - Piston Head Volume (cc)
-15.00cc
Product Attributes - Wrist Pin Style
Press-fit or 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
1.20mm x 1.20mm x 3.00mm
Product Attributes - File Fit
Yes
Product Attributes - Gapless
No
Product Attributes - Top Ring Thickness
1.2mm
Product Attributes - Top Ring Material
Ductile iron
Product Attributes - Top Ring Facing Material
Gas nitrided
Product Attributes - Second Ring Thickness
1.2mm
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.This set has an H13 upgraded wrist pin.

Reference Information

Brand Name/s Diamond Pistons
StreetFX SKU dpp11521-R1-8-H
SFX Item ID 5523848
Supplier Item Code 5523848
Manufacturer SKU 11521-R1-8-H
Manufacturer UPC 193564373519
Alternative References LS1, 4.030B/1.115CD/Kit

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1997
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.7L/350
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2014
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.3L/325
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size4.8L/294
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2020
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
  • MakeCHEVROLET
    Beginning Year2008
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376

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