Low compression forged pistons for the 4.2L 32v chain driven platforms. Perfect for boosted applications pushing the envelope! These pistons will fit factory and aftermarket connecting rods. AMTuned spec and used in house. Fits models: 4.2 S5, 4.2 RS4, 4.2 R8, 4.2 RS5. These work with both the tapered and non tapered small end factory connecting rods of the models listed. Piston rings are compatible with factory Alusil bores and sleeved iron bores.
Contents Include:
- Qty 8: Diamond Pistons 10:1 Compression, coated skirts, bank specific offset pin design.
- Qty 8: Total Seal piston ring pack
- Qty 8: Piston Pins
- Qty 16: Pin clips