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The 2017 CRF450R's new engine and muffler configuration gave us the opportunity to create an entirely new system built specifically for the new CRF450 machines. Introducing our all-new Signature Series RS-9T tapered dual muffler exhaust system for the all new CRF450R.

Some features on the new RS-9T dual tapered muffler CRF450R/RX system include:
Dyno and track tested by Honda R&D in Japan, American Honda MX Team, and HRC All Japan MX Racing Team
 
3-stage header provides broader overall range of power and throttle response
New tail pipe divider creates smoother exhaust flow and better velocity to the right and left tail pipe
New compact forward positioned RS-9T dual muffler design provides lower center of gravity for better mass centralization
Larger RS-9T core creates improved throttle response, and power in mid and top end
New RS-9T mufflers have more volume than stock to provide a decrease in overall dB noise level
Works with or without Honda's new optional electric start system
Stainless Steel Header and Tail-pipe