JE Pistons
JE Pistons Ultra Series Piston Kit - 394140 For Harley Motorcycles 2018-2026
MPN:
394140
SKU:
0910-6858
JE Pistons
JE Pistons Ultra Series Piston Kit - 394140 For Harley Motorcycles 2018-2026
MPN:
394140
SKU:
0910-6858
Availability:
Only 4 left!
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
Skirt coating reduces operating friction and wear throughout the life of piston
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
Bore Size
4.320"
Piston Head Shape
Dished
Riding Style
Street
Compression Ratio
10.25:1
Bore - Oversize
+0,070"
Bore Oversize
+0.070"
Stroke Length
4.500"
Units
Kit
Model
Ultra Series
Piston Material
Forged 2618 Aluminum
Product Name
Piston Kit
Part Notes
Kit Includes:
• 2x Ultra Series Pistons
• 2x Wrist Pins
• 2x Ring Sets
• 2x Wire Locks
Original price
$729.99
-
Original price
$729.99
Original price
$729.99
$729.99
-
$729.99
Current price
$729.99
Product Details
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
- Skirt coating reduces operating friction and wear throughout the life of piston
- 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
| Bore Size | 4.320" |
| Piston Head Shape | Dished |
| Riding Style | Street |
| Compression Ratio | 10.25:1 |
| Bore - Oversize | +0,070" |
| Bore Oversize | +0.070" |
| Stroke Length | 4.500" |
| Units | Kit |
| Model | Ultra Series |
| Piston Material | Forged 2618 Aluminum |
| Product Name | Piston Kit |
Part Notes
- Kit Includes:
- • 2x Ultra Series Pistons
- • 2x Wrist Pins
- • 2x Ring Sets
- • 2x Wire Locks
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
- Skirt coating reduces operating friction and wear throughout the life of piston
- 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
| Bore Size | 4.320" |
| Piston Head Shape | Dished |
| Riding Style | Street |
| Compression Ratio | 10.25:1 |
| Bore - Oversize | +0,070" |
| Bore Oversize | +0.070" |
| Stroke Length | 4.500" |
| Units | Kit |
| Model | Ultra Series |
| Piston Material | Forged 2618 Aluminum |
| Product Name | Piston Kit |
Part Notes
- Kit Includes:
- • 2x Ultra Series Pistons
- • 2x Wrist Pins
- • 2x Ring Sets
- • 2x Wire Locks
| Store SKU | MFR. Product # | Availability |
|---|---|---|
| 0910-6858 | 394140 | In Stock |
This product is vehicle specific.
Select your vehicle to confirm fitment.
This Product Fits
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
Product Description
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
- Skirt coating reduces operating friction and wear throughout the life of piston
- 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
| Bore Size | 4.320" |
| Piston Head Shape | Dished |
| Riding Style | Street |
| Compression Ratio | 10.25:1 |
| Bore - Oversize | +0,070" |
| Bore Oversize | +0.070" |
| Stroke Length | 4.500" |
| Units | Kit |
| Model | Ultra Series |
| Piston Material | Forged 2618 Aluminum |
| Product Name | Piston Kit |
Part Notes
- Kit Includes:
- • 2x Ultra Series Pistons
- • 2x Wrist Pins
- • 2x Ring Sets
- • 2x Wire Locks
Part Numbers
| Store SKU | MFR. Product # | Availability |
|---|---|---|
| 0910-6858 | 394140 | In Stock |
Fitment
This product is vehicle specific.
Select your vehicle to confirm fitment.
This Product Fits
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.