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 |
| Description_DEF |
Engine Piston Kit |
| Description_DES |
Piston Set, 2618, Inv Dome/Dish, 4.125 Bore, 1.304 CD, 0.927 Pin, Set of 8. |
| Description_EXT |
JE Ultra, Chevrolet, LS Gen III/IV, 4.125 in. Bore, 1.304 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_SHO |
Piston Kit |
| Description_TLE |
Chevrolet LS, 4.125 Bore, Dish, Set of 8 |
| Title - Web |
JE Ultra Series Chevrolet LS Gen III/IV Piston Kit - 4.125 in. Bore - 1.304 in. CH, -10.80 CC |
| Add-On |
927-2250-20-93C |
| Add-On |
927-073-MW |
| Add-On |
JG31F8-4125-2 |
| Out of Stock Message |
Call for Availability |
| Piston Pin Length |
2.250 |
| Engine Type |
ICE |
| Piston Head Type |
Dish |
| Engine |
LS Gen III/IV |
| Prop 65 Yes/No |
Yes |
| Prop 65 - Short Label |
Prop 65 Warning Label.JPG |
| Wrist Pin Material |
9310 Nickel Carbon Steel Alloy |
| Prop 65 (C, R or CR) |
CR |
| Oil Ring Thickness |
0.1175 |
| Piston Pin Wall Thickness |
0.200 |
| Bore Diameter |
4.125 |
| Forging Type |
FSR |
| Piston Series |
JE Ultra Series |
| Category Hierarchy |
Auto>JE Ultra Series>Piston Kits>Domestic |
| Ringset Included |
No |
| Piston Pin Outside Diameter |
0.927 |
| Second Compression Ring Thickness |
0.0600 |
| Engine - Web |
LS Gen III/IV |
| Make - Web |
Chevrolet |
| Piston Material |
2618 |
| Make |
CHEVROLET |
| Compression Height |
1.304 |
| Industry |
Automotive |
| Title |
JE Ultra Series - Chevrolet, LS Gen III/IV, 4.125 in. Bore, Piston Kit |
| Piston Volume |
-10.80 |
| Piston Pin Material |
9310 |
| Top Compression Ring Thickness |
0.0475 |
| Product Type |
Engine Piston Kit |
| Product Market |
Domestic |
| Cylinder Head |
LS 12 DEG/15 DEG COMBO VR |
| Wrist Pin Length |
2.250 |
| Wrist Pin Outer Diameter |
0.927 |
| Wrist Pin Wall Thickness |
0.200 |
| Ring Set Included |
No |
| Length |
6.0000 |
| Width |
12.0000 |
| Height |
26.0000 |
| Weight |
13.0000 |
