Complete set of two Norton lightweight pistons 750 to 1007cc. For JSM longer rods.

1/3 lighter than stock items, Kit includes rings, clips and .708″ DLC coated pins. Smoothing out the vibes and reducing stress on the motor is the best thing you can do for your Norton. 750cc = 185 grams. 850cc = 205 grams, 920cc = 240 grams and 1007cc = 240 grams. Street bikes are more pleasant to ride and racers have a new advantage.  A drop in kit compatable with all types of cylinders.  No modifications necessary except that Hi C.R. motors with bores greater than 78.5mm will need larger diameter combustion chambers. 79mm pistons are available on special order (the limit for unlined stock cylinders) and need a 81mm head gasket.  Extra high compression 81mm racing pistons are special order.  These must be combined with our longer rods (more info). Crank rebalancing is not required (balancing).  Most of our 750 and larger flat top pistons are coated but some are not.  Wiseco, JE, Gibtec brands available – the lightest, top of the line pistons you can buy for your Norton.  Slightly oversize 81 & 83mm pistons available on special order. All high C.R. pistons need high octane fuel. Add TiN (titanium nitride) top ring coating to avoid vertical stripes on Molnar Nikasil coated alum cylinder walls (order ring coating here).