Pair of cast Hepolite Pistons for Norton Commando 850cc models (1973-77).
Supplied complete with Hepolite rings, gudgeon pins and circlips.
Available in Standard, +020, +040, +060 oversize.
Original Bore Size: 3.3015" - 77mm
Compression Ratio: 8.5:1
Hepolite number: 19342
OEM: 19342, 06-3838, 06-4041, 06-4042, 06-4043