Yoshimura RS3 full exhaust is the perfect system except it is too loud for my taste at wide open throttle. This spark arrestor takes the noise without robbing the system of its power production. It took 2 minutes to install and it's the answer to my HOA blues.
This was the best upgrade to the Yoshi pipe. I like the bike having a bit of sound but not so much that it noisey with your helmet on. Under load the standard yoshi was too loud. After installing the this insert it still has a sporty sound but isn’t stupid loud.
Great product and worth the cash