OS Engines Induction Silencer Set - .12 & .21 On-Road

OS Engines Induction Silencer Set - .12 & .21 On-Road OS-EN72414000 OS Engines Induction Silencer Set - .12 & .21 On-Road INS-Box, developed by OS Engines for use with .21 and .12 size nitro engines in on-road/circuit cars to reduce noise levels at sanctioned meetings. EFRA/IFMAR approved (INS200902)