This matching set of silencers are suitable fitment for the 1972-1974 Norton Commando MK2 Interstate and Interpol models. Finished to the correct shape and with the smoothed outlets unique to this style. Sold as a pair.
These are nice quality and economically priced reproduction silencers from Emgo. Overall length is 26-3/4″ and the inlet diameter is 1-3/8″.
Silencers are necessary for maintaining a reasonable reduction of decibels. A properly constructed exhaust system with some level of backpressure will scavenge spent exhaust gases from the cylinder head to create a vacuum that draws in the fuel-air mixture more efficiently.
The muffler inlets are fitted over the 1-3/8″ ends of the exhaust header pipes and secured with clamps. The silencers feature integrated mounting bosses for direct mounting to the individual left and right hangers. It is advisable to loosen the exhaust system while fitting the silencers to allow for adjustments prior to tightening down the hardware.
