Yoshimura Plug Kit We Gsxr 055HA111900 Turn that stock bike into a show stopper! Yoshimura engine plugs are CNC machined from 6061 T6 alloy, with a laser etched Yoshimura logo Kit Includes: Large Engine Plug and Small Engine Plug for a complete look New Works Edition finish features a special electrolytic process that creates a dense, super-hard surface that is extremely resistant to wear, heat and fade from sunlight