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Diamond Pistons Race Series Pistons
Race Series LS FT 15° 4.030B/1.115CD
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Estimated Ship Date: Dec 7, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
21513-R1
Part Type:
Product Line:
Summit Racing Part Number:
DPP-21513-RS
UPC:
193564387929
Piston Rings Included:
No
Bore (in.):
4.030 in.
Bore (mm):
102.362mm
Stroke:
4.000 in.
Engine Stroke Type:
Stock/Stroked
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):
+3.00cc
Wrist Pin Style:
Floating
Wrist Pin Retainers Included:
No
Wrist Pin Included:
No
Pin Diameter (in.):
0.927 in.
Piston Ring Thickness:
1.50mm x 1.50mm x 3.00mm
File Fit:
No
Gapless:
No
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Piston is 2618 material.
Diamond Pistons Race Series Pistons
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
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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