
JE Pistons #394140 - Piston Kit - 4.320" - 10.25:1 CR - 114"/117" M8
Fits These Vehicles
Fits These Vehicles
Shipping & Returns
Shipping & Returns
Description
Piston Average Weight: 456 grams
Piston Volume: -18.10 cc
Two cylinder piston kit.
Includes:
• 2x Pistons
• 2x Ring Sets
• 2x Wrist Pins
• 4x Circlips
Features
- Propriety aligned grain flow forging technology for maximum tensile strength suited for high performance enviroment
- Cermic crown coating protects the piston by reducing heat transfer
- Internal and external bracing maintains optimized strength-to-weight ratio for longevity
- 3D undercrown milling in non-critical areas reduces overall weight
- Lateral gas ports and accumulator groove maintain power-producing ring seal even at high RPM and high boost
- Tuff Skirt is a propriety, moly based dry film skirt coating that is applied in-house and reduces operating friction for better wear resistance
- Offset pin reduces piston rock and minimize engine operating noise
- Skirt notches for optimal clearance at the bottom dead center
- Kit includes two pistons, premium ring pack, wrist pins and wire locks
Specs
| Product Name | Piston Kit |
| Bore - Oversize | +0,070" |
| Bore Size | 4.320" |
| Skirt Coating | Tuff Skirt |
| Type | Forged Side Relief Design |
| Compression Ratio | 10.25:1 |
| Riding Style | Street |
| Stroke Length | 4.500" |
| Units | Kit |
| Model | Ultra Series |
| Piston Material | Forged 2618 Aluminum |
| Piston Head Shape | Dished |











