426 Hellcat stroker kit - displacement increase to 7 liters
Conversion kit to increase the displacement of the 6.2 liter Hellcat engine in Dodge Challenger, Charger and Durago Hellcat as well as Jeep Trackhawk and RAM TRX.
The displacement is increased to 7 liters (426 cubic inches).
- Premium billet crankshaft from Molnar, 4,050 stroke
- Forged 6.175 connecting rods from Molnar Technologies
- Coated premium bearings optional
- Mahle 2618 Forged piston
- Cabin size 4.090 (optional oversize 4.095 or 4.100)
- Coated ring bars
- Coated piston shirts
- Piston pin made of H13 tool steel, Diamond-Like Coated)
- Upper ring offset downwards for additional strength
- Additional cross-section on the ring web between the first and second compression ring for additional strength
- Increased volume of the storage groove between the first and second ring for additional strength (reduces pressure peaks that cause web fractures)
- Additional valve recesses for adaptation to larger cam profiles
- Premium piston rings (impact clearance must be adjusted)
Fits:
| Brand | Model | Engine | Year |
| Dodge | Charger | 6.2 Hellcat | 2015 – 2023 |
| Dodge | Challenger | 6.2 Hellcat | 2015 – 2023 |
| Dodge | Durango | 6.2 Hellcat | 2021 – 2023 |
| Jeep | Grand Cherokee | 6.2 Trackhawk | 2018 – 2021 |
| RAM | 1500 | TRX | 2021 – 2023 |
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