CNC ALUMINUM BIG BORE  BIG HEAD MUFFLER EXHAUST PIPE FOR HONDA XR50 CRF50 XR CRF 50 70 SDG Brand New! This is a complete two piece exhaust system from the head pipe to the tail section. The rear canister in this pipe is made of alloy. It comes with a aluminum alloy muffler, CNC chrome steel head pipe, removeable pipe guard. This will make your bike breath better with any engine modifications, and also sounds great with a stock bike. As soon as you bolt this exhaust pipe on you will notice an increase of power through all of your Motors RPM range. This PIPE makes your ride have that deep throaty sound like the big CRF's and gives your ride a better throttle response and more power. It is made of high quality CNC alloy and the classy oval shape makes it look very different too!