4 pistons with piston rings, pins and clips, compression 8.5:1
4 pistons with piston rings, bolts and clips, compression 9.0:1
4 pistons with piston rings, pins and clips, compression 10,5 : 1 - as standard
6 pistons with piston rings, pins and clipsCompression 11.5 : 1
6 pistons with piston rings, pins and clipsCompression 8.5 : 1