The R5 glow plug from OS Engines is ideal for 1/8-scale, .21 nitro-powered on-road RC cars. It is designed for high nitro fuels (25% +) and has increased durability at high RPM and under extreme temperatures. This glow plug allows for leaner needle settings for higher power and quicker throttle response.

The R5 glow plug from OS Engines is ideal for 1/8-scale, .21 nitro-powered on-road RC cars. It is designed for high nitro fuels (25% +) and has increased durability at high RPM and under extreme temperatures. This glow plug allows for leaner needle settings for higher power and quicker throttle response.