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, Flat Top, 4.125 Bore, 1.304 CD, 0.927 Pin, Set of 8. |
| Description_INV |
JE Pistons, Piston Kit |
| Description_EXT |
JE Ultra, Chevrolet, LS Gen III/IV, 4.125 in. Bore, 1.304 CD, Flat Top, 8 Cyl. Piston Kit |
| 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_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_TLE |
Chevrolet LS, 4.125 Bore, Flat, Set of 8 |
| Description_SHO |
Piston Kit |
| Oil Ring Thickness |
0.1175 |
| Make |
CHEVROLET |
| Piston Pin Wall Thickness |
0.200 |
| Top Compression Ring Thickness |
0.0475 |
| Category Hierarchy |
Auto>JE Ultra Series>Piston Kits>Domestic |
| Forging Type |
FSR |
| Compression Height |
1.304 |
| Wrist Pin Outer Diameter |
0.927 |
| Piston Pin Material |
9310 |
| Piston Series |
JE Ultra Series |
| Product Type |
Engine Piston Kit |
| Title |
JE Ultra Series - Chevrolet, LS Gen III/IV, 4.125 in. Bore, Piston Kit |
| Bore Diameter |
4.125 |
| Wrist Pin Length |
2.250 |
| Ring Set Included |
No |
| Engine - Web |
LS Gen III/IV |
| Piston Pin Outside Diameter |
0.927 |
| Add-On |
JG31F8-4125-2 |
| Piston Volume |
-5.00 |
| Engine Type |
ICE |
| Piston Material |
2618 |
| Add-On |
927-073-MW |
| Prop 65 Yes/No |
Yes |
| Product Market |
Domestic |
| Piston Head Type |
Flat |
| Add-On |
927-2250-20-93C |
| Wrist Pin Wall Thickness |
0.200 |
| Ringset Included |
No |
| Cylinder Head |
LS 12 DEG/15 DEG COMBO VR |
| Prop 65 (C, R or CR) |
CR |
| Title - Web |
JE Ultra Series Chevrolet LS Gen III/IV Piston Kit - 4.125 in. Bore - 1.304 in. CH, -5.00 CC |
| Out of Stock Message |
Call for Availability |
| Engine |
LS Gen III/IV |
| Second Compression Ring Thickness |
0.0600 |
| Piston Pin Length |
2.250 |
| Industry |
Automotive |
| Prop 65 - Short Label |
Prop 65 Warning Label.JPG |
| Wrist Pin Material |
9310 Nickel Carbon Steel Alloy |
| Make - Web |
Chevrolet |
| Length |
6.0000 |
| Width |
12.0000 |
| Height |
26.0000 |
| Weight |
13.0000 |
