JE Pistons SUB WRX EJ205 79mm STR 93mm Bore CR 9.5 KIT Single Right Piston
JE Pistons SUB WRX EJ205 79mm STR 93mm Bore CR 9.5 KIT Single Right Piston
Description
Piston
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for European, import and sport compact applications. Engineered, forged and machined 100% in the USA, JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From drift track to drag strip, JE Pistons? performance is proven in victory lane time and time again. Equip your engine with the best in forged pistons.
Additional Information
JE, Subaru, EJ Series, 3.661 in. Bore, 9.50:1, Inverted Dome/Dish, Right Piston
Application Summary
Subaru EJ205 Stroker
Part Type
Engine Piston
Features
- Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applicationsDesigned specifically for each engine and use application to provide optimized performance durabilityProprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pinSkirt coating (depending on application) reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noiseAccumulator groove (depending on application) helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent powerIncludes high-quality wrist pins, locks, and JE Pro Seal premium piston ringsMade 100% in the USA
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 04:03:16
Note for Pistons, Rings, Rotors, Rods and engine internals
Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, 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.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | JE Pistons |
| StreetFX SKU | jep314451R |
| SFX Item ID | 4361539 |
| Accounting SKU | jep-314451R |
| Manufacturer SKU | 314451R |
| Manufacturer UPC | 193564017222 |
| Alternative References | 314451R, JEP-314451R |
Pistons, Single - SUB EJ20 FSR STR KIT
JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for European, import, and sport compact applications, and they have been performance-proven in victory lane time and time again.
JE Pistons Subaru EJ Series pistons are single replacements. Available in different bore sizes for right or left, the pistons are specifically engineered for extreme applications up to, and including, professional competition. In such environments, the higher compression ratios and boost necessitate the high-tensile strength of forged 2618 aluminum construction. The skirts feature a proprietary Forged Side Relief (FSR) forging design that minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin. High-quality wrist pins, locks, and piston rings are included. Equip your engine with the best in forged pistons—JE Pistons.
| Product Attributes | |
|---|---|
| Brand | JE Pistons |
| Manufacturer's Part Number | 314451R |
| Part Type | Pistons |
| Product Line | JE Pistons Subaru EJ Series Pistons |
| UPC | 193564017222 |
| Piston Rings Included | Yes |
| Bore (in.) | 3.664 in. |
| Bore (mm) | 93.000mm |
| Stroke | 79.00mm |
| Engine Stroke Type | Stroked |
| Actual Engine Displacement | 2.1L/2145cc |
| Rod Length | 130.500mm |
| Piston Style | Dish, with four valve reliefs |
| Piston Material | Forged aluminum |
| Compression Height (in.) | 1.209 in. |
| Piston Head Volume (cc) | -7.50cc |
| Wrist Pin Style | Press-fit or floating |
| Wrist Pin Retainers Included | Yes |
| Wrist Pin Included | Yes |
| Pin Diameter (in.) | 0.905 in. |
| Piston Ring Thickness | 0.039 in. x 0.047 in. x 0.110 in. |
| File Fit | No |
| Gapless | No |
| Top Ring Thickness | 0.039 in. |
| Top Ring Material | Carbon steel |
| Top Ring Facing Material | Gas nitrided |
| Second Ring Thickness | 0.047 in. |
| Second Ring Material | Ductile iron |
| Second Ring Facing Material | Phosphate coated |
| Oil Ring Thickness | 0.110 in. |
| Oil Ring Material | Carbon steel |
| Oil Ring Tension | Low |
| Remanufactured | No |
| Quantity | Sold individually. |
| Notes | Fits right side exhaust valve orientation, works with turbocharger and nitrous. |
Compatibility
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