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JE Auto forged pistons from JE Pistons are the result of over 75 years of industry leading experience extended to our range of premium forged pistons for LSX 12 and 15 Degree Engines. 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. Equipped with the following custom level features
JE pistons are all designed, forged, and machined in-house, allowing control over every step of the piston-making process. JE Pistons 7+ decades of experience in high-level racing has led to offering premium racing features, including full billet construction, EN plating, and purpose-designed coatings, to name a few.
| 2nd Groove Width | 0.06 |
|---|---|
| 3D Undercrown Milling | No |
| Accumulator Groove | Yes |
| Anodize Top Ring Groove | No |
| Bore Diameter | 4.155 |
| Combo 2 | No |
| Compression Height | 1.165 |
| Compression Ratio | 11.70:1 / 64.00 CC Head |
| Connecting Rod Length | 6.125 |
| Contact Reduction | No |
| Country Of Origin | USA |
| Cylinder Head | LS 12 DEG/15 DEG COMBO VR |
| Deck Height | 9.240 |
| Double Pin Oilers | Yes |
| DVGP | No |
| Econo Undercrown Milling | No |
| EN Plating | No |
| Engine | LSX |
| Engine Displacement | 423 |
| Engine Family | LS |
| Engine Stroke | 3.900 |
| Engine Type | ICE |
| Exhaust Angle | 12 |
| Exhaust Depth | S |
| Exhaust Diameter | 2.000 |
| Forging Type | FSR |
| Gas Distribution | No |
| Intake Angle | 12 |
| Intake Depth | .235 |
| Intake Diameter | 2.450 |
| Lateral Gas Ports | No |
| Make | Chevrolet |
| Mill Undercrown | No |
| OEM Bore Diameter | 4.125 |
| Oil Groove Width | 0.11750 |
| Oil Ring Thickness | 0.1175 |
| Oversized | Yes |
| Oversized Amount | 0.030 |
| Pin Fit | Yes |
| Piston Average Weight | 415 |
| Piston Head Type | Flat |
| Piston Material | 2618 |
| Piston Quantity | 8 |
| Piston Series | JE Pistons |
| Piston Sub-Series | LS Flat Top |
| Piston To Wall Clearance | -0.004 |
| Piston Volume | -5.00 |
| Product Market | Domestic |
| Product Type | Engine Piston Kit |
| Ring Set - Recommended | JG31F8-4155-3 |
| Ring Set Included | No |
| Ring Set Thickness | 1.20 MM x 1.50 MM x 3.00 MM |
| Second Compression Ring Thickness | 0.0600 |
| Skirt Coat | Yes |
| Smooth Crown Finish | No |
| Thermal Crown | No |
| Top Compression Ring Thickness | 0.0480 |
| Top Groove Width | 0.04800 |
| Tuff Skirt | No |
| Ultra Dome | No |
| Ultra Groove | No |
| Ultra Groove Plus Gas Port | No |
| Vertical Gas Ports | No |
| Wrist Pin Included | Yes |
| Wrist Pin Length | 2.250 |
| Wrist Pin Material | 5115 Low Carbon Steel, Case Hardened |
| Wrist Pin Outer Diameter | 0.927 |
| Wrist Pin Part Number | 927-2250-15-51C |
| Wrist Pin Retainer Included | Yes |
| Wrist Pin Retainer Part Number | 927-073-MW |
| Wrist Pin Wall Thickness | 0.150 |
30 Months
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).
WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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