Yamaha Chappy MLM vs Stock Pipe Comparison

Stock vs MLM sound and ride comparison.
There isn't much information on these bikes online and even less showing performance upgrades. As far as I know this is the only footage online for MLM pipe on a Chappy so enjoy! Bike is a 1977 Yamaha Chappy LB80 with the 2 speed and high/low transmission. MLM pipe installed with no problems. Great MLM quality as you'd expect. Top speed increased from 42 to 54mph and still pulling with just a new spark plug, pipe, and upjet. Stock gearing as well. Biggest increasing in power comes in the midrange!