Description
Piston Kit – 4.250″ +0.005″ – 11.7:1 CR – 128″ Big Bore – 114″/117″ M8
Features
- Valve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves
- Type 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels
- Type 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on
- OE-style round wire locks are easily installed
- Heavy-duty wrist pins with true 0.9270” diameter to fit rods correctly
- Line2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation
- Kit includes pistons, rings, pins and locks
- Requires 4.250″ bore cylinder sold separately.
Specs
| Units | Kit |
| Compression Ratio | 11.7:1 |
| Riding Style | Street |
| Displacement | 128″ |
| Stroke Length | 4.500″ |
| Model | Super Duty |
| Bore – Oversize | +0,005″ |
| Bore Size | 4.250″ |
| Piston Material | 4032 Aluminum Alloy |
| Type | Big Bore |
| Piston Head Shape | Domed |
| Product Name | Piston Kit |
| Style | Forged |
