Altus Motorsports » 2021, KLX450R

Description: The T-4 System is a tunable version of our more exotic Ti-4R System. RC-4 Resonance Chamber has been added to the head pipe to reduce noise. (The RC-4 Resonance Chamber, depending on year of your bike, might not come with the system.)

Description: If you are looking for an inexpensive, easy-to-install, lightweight performance silencer we have just what you need. Our T-4 Slip-On Silencers (a.k.a. T-4S) offer all that and more. T-4 Slip-Ons...More Details »