This muffler will not fit the 50CC A engine. The Canister Muffler is great for getting more power out of your engine. Also, you can hide the muffler inside the airplane for a clean look. With a canister muffler, you do not have to cut a hole in the cowl. Note - you need to purchase two for the 111CC gas engine.
Stainless Steel flexible Header Pipe
Two hose clamps
Please refer to the pictures for dimensions. There are two sizes of mufflers that cover all of the RCGF engine displacements. What makes each product specific for an engine is the size of the header mounting flange.