EFRA/IFMAR approved silencer was developed for .12 - .21 class on-road engines to help reduce noise levels, while at the same time having very little affect on power output. Includes: Upper and ...

for the O.S. Induction Silencer for on-road racing (OSMG2350). This EFRA/IFMAR approved silencer was developed for .12 - .21 class on-road engines to help reduce noise levels, while at the same time having ...