Diamond Pistons
Diamond Pistons Race Series 21557-RS-8 Pistons, Dish, 12 Degree LS2K Series, Forged Aluminum, 4.125 in. Bore, -20.00cc Head Volume, Chevy, LSX, Set of 8
dpp21557-RS-8
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
Pistons
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 | |
|---|---|
| Brand | Diamond Pistons |
| Manufacturer's Part Number | 21544-RS-8 |
| Part Type | Pistons |
| Product Line | Diamond Pistons Race Series Pistons |
| UPC | 686162209187 |
| Piston Rings Included | Yes |
| Bore (in.) | 4.125 in. |
| Bore (mm) | 104.775mm |
| Stroke | 4.000 in. |
| Engine Stroke Type | Stroked |
| Rod Length | 6.125 in. |
| Piston Style | Dish, with two valve reliefs |
| Piston Material | Forged aluminum |
| Compression Height (in.) | 1.115 in. |
| Piston Head Volume (cc) | +15.00cc |
| 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 | 1.50mm x 1.50mm x 3.00mm |
| File Fit | No |
| Gapless | No |
| Top Ring Thickness | 1.5mm |
| Top Ring Material | Stainless steel |
| Top Ring Facing Material | C-23 PVD Chrome |
| Second Ring Thickness | 1.5mm |
| Second Ring Material | Cast iron |
| Second Ring Facing Material | Cast iron |
| Oil Ring Thickness | 3.0mm |
| Oil Ring Material | Carbon steel |
| Oil Ring Tension | Standard |
| Remanufactured | No |
| Quantity | Sold as a set of 8. |
| Notes | For use on LSX race engines only. |
| 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 |
No specific fitment data available for this part. For clarification, please contact us.
| Application Data | |
|---|---|
| Make | CHEVROLET |
| Beginning Year | 1997 |
| Ending Year | 2004 |
| Engine Type | V8 |
| Engine Family | Chevy small block Gen III/IV (LS-based engines) |
| Engine Size | 5.7L/350 |
| Application Notes | For use on LSX race engines only. |
| Make | CHEVROLET |
| Beginning Year | 1999 |
| Ending Year | 2007 |
| Engine Type | V8 |
| Engine Family | Chevy small block Gen III/IV (LS-based engines) |
| Engine Size | 4.8L/294 |
| Application Notes | For use on LSX race engines only. |
| Make | CHEVROLET |
| Beginning Year | 1999 |
| Ending Year | 2007 |
| Engine Type | V8 |
| Engine Family | Chevy small block Gen III/IV (LS-based engines) |
| Engine Size | 5.3L/325 |
| Application Notes | For 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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