Ultra Series forged pistons from JE are the industry s strongest, most fully featured pistons available off the shelf. Offered for a wide range of domestic applications from LS to Big Block and HEMI to Ford Modular, Ultra Series pistons feature JE s proprietary Aligned Grain Flow forging technology providing next-level tensile strength ideal for the extreme cylinder pressures of power adder engine builds. Equipped with custom level features including thermal barrier crown coating, skirt coating, gas ports, and more, Ultra Series are the ideal pistons for your boost-heavy or nitrous-huffing V8 engine build. As with all JE Pistons products, Ultra Series pistons are made 100% in the USA.
Specifications:
| Description_ASM |
Chevrolet LS Gen III/IV Stroker |
| Description_DEF |
Engine Piston Kit |
| Description_DES |
Piston Set, 2618, Inv Dome/Dish, 4.000 Bore, 1.115 CD, 0.927 Pin, Set of 8. |
| Description_EXT |
JE Ultra, Chevrolet, LS Gen III/IV, 4.000 in. Bore, 1.115 CD, Inverted Dome/Dish, 8 Cyl. Piston Kit |
| Description_INV |
JE Pistons, Piston Kit |
| Description_FAB |
- Designed for Power: Every feature on Ultra Series Pistons are optimized to perform high-horsepower racing engines
- Aligned Grain Flow Technology: Exclusively available on JE Ultra Series, this proprietary, in-house forging process maximizes tensile strength to withstand the stresses of high-performance engine environments
- Skirt Coating: Reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise, especially on cold start
- Thermal Barrier Crown Coating: This ceramic-based coating reflects heat into the combustion chamber, therefore reducing piston crown temperatures and improving exhaust gas scavenging
- High-Strength Wrist Pins: Premium thick-wall wrist pins are manufactured by Trend Performance in the USA and are designed for the demands of high-performance/power-adder builds
- Lateral Gas Ports: Help maintain power-producing ring seal at the top compression ring, even in high RPM and high boost situations
- Optimized Pin Oiling: Enhanced pin oiling features keep pin, pin bores, and small-end lubricated for reduced heat, friction, and wear
- Made 100% in the USA
|
| Description_MKT |
Ultra Series forged pistons from JE are the industry?s strongest, most fully featured pistons available off the shelf. Offered for a wide range of domestic applications from LS to Big Block and HEMI to Ford Modular, Ultra Series pistons feature JE?s proprietary Aligned Grain Flow forging technology providing next-level tensile strength ideal for the extreme cylinder pressures of power adder engine builds. Equipped with custom level features including thermal barrier crown coating, skirt coating, gas ports, and more, Ultra Series are the ideal pistons for your boost-heavy or nitrous-huffing V8 engine build. As with all JE Pistons products, Ultra Series pistons are made 100% in the USA. |
| Description_TLE |
Chevrolet LS, 4.000 Bore, Dish, Set of 8 |
| Description_SHO |
Piston Kit |
| Wrist Pin Material |
9310 Nickel Carbon Steel Alloy |
| Prop 65 Yes/No |
Yes |
| Prop 65 (C, R or CR) |
CR |
| Title - Web |
JE Ultra Series Chevrolet LS Gen III/IV Piston Kit - 4.000 in. Bore - 1.115 in. CH, -12.20 CC |
| Make - Web |
Chevrolet |
| Prop 65 - Short Label |
Prop 65 Warning Label.JPG |
| Piston Pin Length |
2.250 |
| Engine |
LS Gen III/IV |
| Industry |
Automotive |
| Add-On |
927-073-MW |
| Second Compression Ring Thickness |
0.0600 |
| Out of Stock Message |
Call for Availability |
| Add-On |
927-2250-20-93C |
| Add-On |
JG3108-4000-7 |
| Ringset Included |
No |
| Cylinder Head |
LS 12 DEG/15 DEG COMBO VR |
| Piston Material |
2618 |
| Piston Head Type |
Dish |
| Category Hierarchy |
Auto>JE Ultra Series>Piston Kits>Domestic |
| Forging Type |
FSR |
| Product Market |
Domestic |
| Oil Ring Thickness |
0.149 |
| Title |
JE Ultra Series - Chevrolet, LS Gen III/IV, 4.000 in. Bore, Piston Kit |
| Piston Pin Outside Diameter |
0.927 |
| Product Type |
Engine Piston Kit |
| Engine Type |
ICE |
| Piston Pin Wall Thickness |
0.200 |
| Piston Series |
JE Ultra Series |
| Compression Height |
1.115 |
| Top Compression Ring Thickness |
0.0475 |
| Make |
CHEVROLET |
| Piston Pin Material |
9310 |
| Piston Volume |
-12.20 |
| Bore Diameter |
4.000 |
| Wrist Pin Wall Thickness |
0.200 |
| Wrist Pin Length |
2.250 |
| Engine - Web |
LS Gen III/IV |
| Ring Set Included |
No |
| Wrist Pin Outer Diameter |
0.927 |
| Length |
6.0000 |
| Width |
12.0000 |
| Height |
26.0000 |
| Weight |
14.0000 |
