Align Muffler Spacer For 50/55 Size Helicopters

I use these on my nitro helis as the surfaces are machined on the motor and mufflers. I also use 90-105 sized ones also. No mess later makes unbolting muffler later easy.

It’s very good and necessary upgrade for any 50-55 size nitro engines. (Mounting holes measure 37mm) . It seals any gap between the engine and muffler and prevents the leak. I would highly recommend anybody still flying nitro.

No issues! Works as it should! Heli Direct as usual always coming through with rear prices and fast processing and shipping with great customer support when needed!