TPI Spark Arrestor End Cap for 2021-23 150

This end cap fits the 2021-23 150 bikes.  It gives you over a 2 hp gain on over rev. That's only with the addition of the end cap. It has a spark arrestor in place, weighs the same as the stock end cap and makes more mid to top power than an aftermarket muffler. It makes more since the intenal core is longer. It’s also quiter than an aftermarket muffler, since it ha twice as much packing.
 
You can easily remove and clean the spark arrestor screen as needed, but it’s not needed much on the TPI bikes. You’ll drill out the stock rivets to remove the stock one and then this just bolts in place.