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Diamond Pistons Competition Series Pistons 11545-R1-8-H
Part Number: DPP-11545-R1-8-H
Diamond Pistons Competition Series Pistons
LS3/L92 4.070B/1.304CD/Kit
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Estimated Ship Date: Dec 15, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
11545-R1-8-H
Part Type:
Product Line:
Summit Racing Part Number:
DPP-11545-R1-8-H
UPC:
193564374059
Piston Rings Included:
Yes
Bore (in.):
4.070 in.
Bore (mm):
103.378mm
Stroke:
4.000 in.
Engine Stroke Type:
Stroked
Actual Engine Displacement:
6.8L/416
Rod Length:
6.125 in.
Piston Style:
Flat top, with two valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.115 in.
Piston Head Volume (cc):
+2.00cc
Wrist Pin Style:
Press-fit or floating
Wrist Pin Retainers Included:
Yes
Wrist Pin Included:
Yes
Pin Diameter (in.):
0.927 in.
Piston Ring Thickness:
1.20mm x 1.20mm x 3.00mm
File Fit:
Yes
Gapless:
No
Top Ring Thickness:
1.2mm
Top Ring Material:
Ductile iron
Top Ring Facing Material:
Gas nitrided
Second Ring Thickness:
1.2mm
Second Ring Material:
Ductile iron
Second Ring Facing Material:
Ductile iron
Oil Ring Thickness:
3.0mm
Oil Ring Material:
Stainless steel
Oil Ring Tension:
Standard
Remanufactured:
No
Quantity:
Sold as a set of 8.
Notes:
Pistons are 2618 material. This set includes an H13 upgraded wrist pin,
Diamond Pistons Competition Series Pistons
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)
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Some parts are not legal for use in California or other states with similar laws / regulations
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