# Diamond Pistons 30405-R1-8 Diamond Pistons Competition Series Pistons | Summit Racing

**Manufacturer:** Diamond Pistons  
**MPN:** `30405-R1-8`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Diamond Pistons |
| Manufacturer name | Diamond Pistons |
| Manufacturer | Diamond Pistons |
| DimensionUnit | inch |
| Extra Product Name | Diamond Pistons 30405-R1-8 Diamond Pistons Competition Series Pistons \| Summit Racing |
| UPC | 686162210664 |
| diameter | 0.866 |
| height | 1.22 |
| height_Attrib | Compression Height (in.) |
| length | 5.933 |
| length_Attrib | Rod Length |
| moq | 1 |
| MPN | 30405-R1-8 |
| multiple | 1 |
| qtyInStock | Jul 24, 2023 |
| SKU | DPP-30405-R1-8 |
| tierMinQty1 | 1 |
| tierPrice1 | 841.3400 |
| width | 0.866 |
| width_Attrib | Pin Diameter (in.) |
| Brand | Diamond Pistons |
| Manufacturer's Part Number | 30405-R1-8 |
| Part Type | Pistons |
| Product Line | Diamond Pistons Competition Series Pistons |
| Summit Racing Part Number | DPP-30405-R1-8 |
| Piston Rings Included | Yes |
| Bore (in ) | 3.572 in. |
| Bore (mm) | 90.729mm |
| Stroke | 3.543 in. |
| Engine Stroke Type | Stock |
| Rod Length | 5.933 in. |
| Piston Style | Dish, with four valve reliefs |
| Piston Material | Forged aluminum |
| Compression Height (in ) | 1.220 in. |
| Piston Head Volume (cc) | +3.50cc |
| Wrist Pin Style | Floating |
| Wrist Pin Retainers Included | Yes |
| Wrist Pin Included | Yes |
| Pin Diameter (in ) | 0.866 in. |
| Piston Ring Thickness | 1.20mm x 1.50mm x 3.00mm |
| File Fit | Yes |
| Gapless | No |
| Top Ring Thickness | 1.2mm |
| Top Ring Material | Steel |
| Top Ring Facing Material | Gas nitrided |
| Second Ring Thickness | 1.5mm |
| 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 |
| Quantity | Sold as a kit. |
| Notes | Pistons are 2618 material. |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Summit Racing | DPP-30405-R1-8 | 841.34 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/202000000/202426500/part_--30405R18---DiamondPistons--fa395b76cd.json`  
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MCP server: https://www.dataalchemy.com/mcp