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.
Specifications:
| Description_ASM |
Subaru EJ257 |
| Description_DEF |
Engine Piston Kit |
| Description_DES |
Piston Set, 2618, Inv Dome/Dish, 3.917 Bore, 1.209 CD, 0.905 Pin, Set of 4. |
| Description_INV |
JE Pistons, Piston Kit |
| Description_EXT |
JE, Subaru, EJ Series, 3.917 in. Bore, 8.50:1, Inverted Dome/Dish, 4 Cyl. Piston Kit |
| Description_FAB |
- Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
- Designed specifically for each engine and use application to provide optimized performance durability
- Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
- Skirt coating (depending on application) reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise
- Accumulator groove (depending on application) helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent power
- Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
- Made 100% in the USA
|
| Description_SHO |
Piston Kit |
| Description_MKT |
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. |
| Description_TLE |
Subaru EJ257, 99.50 Bore, Dish, Set of 4 |
| Wrist Pin Length |
2.500 |
| Wrist Pin Wall Thickness |
0.150 |
| Piston Quantity |
4 |
| Piston Material |
2618 |
| Engine Type |
ICE |
| Oil Ring Thickness |
0.0995 |
| Piston Volume |
-21.20 |
| Ring Set Included |
Yes |
| Product Market |
Sport Compact |
| Product Type |
Engine Piston Kit |
| Title |
JE Pistons - Subaru, EJ Series, 99.50 mm Bore, Piston Kit |
| Piston Pin Material |
5115 |
| Compression Height |
1.209 |
| Piston Pin Wall Thickness |
0.150 |
| Forging Type |
Round |
| Piston Series |
JE Pistons |
| Engine - Web |
EJ Series |
| Piston Pin Outside Diameter |
0.905 |
| Prop 65 (C, R or CR) |
CR |
| Piston Average Weight |
391 |
| Make |
SUBARU |
| Bore Diameter |
99.50 |
| Top Compression Ring Thickness |
0.0480 |
| Category Hierarchy |
Auto>JE Pistons>Piston Kits>Sport Compact |
| Wrist Pin Outer Diameter |
0.905 |
| Out of Stock Message |
Call for Availability |
| Piston Pin Length |
2.500 |
| Second Compression Ring Thickness |
0.0480 |
| Title - Web |
JE Pistons Subaru EJ Series Piston Kit - 99.50 mm Bore - 1.209 in. CH, -21.20 CC |
| Ringset Included |
Yes |
| Add-On |
905-042-CT |
| Industry |
Automotive |
| Add-On |
JG4901-3917 |
| Piston Head Type |
Dish |
| Cylinder Head |
EJ257 STI |
| Prop 65 Yes/No |
Yes |
| Engine |
EJ SERIES |
| Add-On |
905-2500-15-51S |
| Make - Web |
Subaru |
| Prop 65 - Short Label |
Prop 65 Warning Label.JPG |
| Wrist Pin Material |
5115 Low Carbon Steel, Case Hardened |
| Length |
5.0000 |
| Width |
9.0000 |
| Height |
5.0000 |
| Weight |
5.0000 |
