JE Pistons Big Bore Piston Set Harley Milwaukee M8 17-Up
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Upgrade your Harley-Davidson Milwaukee-Eight engine with JE Pistons Big Bore Piston Sets, engineered for riders demanding superior power and long-term reliability. These high-performance pistons are designed specifically for 2017-up M8 models, providing a significant boost in performance through precision engineering and advanced materials.
- Forged from 2618-T6 aluminum for better aligned grain flow and higher tensile strength
- Skirt coating aids in optimal break-in for performance longevity
- High 11.0:1 compression ratio for improved performance and throttle response
- Accumulator groove provides additional volume for combustion pressure, reducing pressure build-up at the top ring
- Designed for street riding styles with a focus on durability and heat management
Technical Specifications
Every JE Pistons Big Bore kit is built to exacting standards, ensuring a perfect fit and maximum power delivery for your Harley M8. These sets include high-quality rings, pins, and locks to complete your top-end build.
| Piston Material | 2618-T6 Aluminum |
|---|---|
| Forging Type | Round |
| Compression Ratio | 11.00:1 |
| Piston Pin Outside Diameter | 0.927 |
| Piston Pin Inside Diameter | 0.627 |
| Piston Pin Length | 63.50 |
| Ringset Included | Yes |
| Retainer Lock Part Number | 927-073-MW |
| Pin Part Number | 927-2500-15-51C |
2017-2020 Harley-Davidson Milwaukee Eight Engines (107ci 4.375" Stroke)
| Product Title | Store SKU | MFR Part # |
|---|---|---|
| 107" 4.375" Stroke / 107 cu in / 3.937" / STD | DS09106007 | 370243 |
| 107" 4.375" Stroke / 114 cu in / 4.08" / +0.143 | DS09106008 | 370244 |
| 107" 4.375" Stroke / 117 cu in / 4.125" / +0.188 | DS09106009 | 370245 |
| 107" 4.375" Stroke / 124 cu in / 4.25" / +0.313 | DS09106010 | 370246 |
| 114/117" 4.5" Stroke / 114 cu in / 4.016" / STD | DS09106011 | 370247 |
| 114/117" 4.5" Stroke / 114 cu in / 4.020" / +0.005 | DS09106012 | 370248 |
| 114/117" 4.5" Stroke / 117 cu in / 4.075" / STD | DS09106013 | 370249 |
| 114/117" 4.5" Stroke / 118 cu in / 4.080" / +0.005 | DS09106014 | 370250 |
| 114/117" 4.5" Stroke / 120 cu in / 4.125" / +0.05 | DS09106015 | 370251 |
| 114/117" 4.5" Stroke / 128 cu in / 4.250"/ +0.175 | DS09106016 | 370252 |
Bulk order
| Variant | Quantity | Price | Total |
|---|---|---|---|
107" 4.375" Stroke / 107 cu in / 3.937" / STD
DS09106007
/
370243
|
|
||
|
107" 4.375" Stroke / 114 cu in / 4.08" / +0.143
DS09106008
/
370244
|
|
||
|
107" 4.375" Stroke / 117 cu in / 4.125" / +0.188
DS09106009
/
370245
|
|
||
|
107" 4.375" Stroke / 124 cu in / 4.25" / +0.313
DS09106010
/
370246
|
|
||
114/117" 4.5" Stroke / 114 cu in / 4.016" / STD
DS09106011
/
370247
|
|
||
114/117" 4.5" Stroke / 114 cu in / 4.020" / +0.005
DS09106012
/
370248
|
Out of stock |
Product subtotal