Aug 30, 2009 · Removing the baffle or Gordon modding will improve response throughout the entire RPM range but a well build slip-on will boost the mid and over-rev quite a bit more. Surprisingly the old school supertrapp 4" series is a great one for the XR400 as well as strait through design pipes like the Pro-Circuit T4.

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DG Performance exhausts help your engine breathe better, resulting in increased throttle response, power and torque. The V2 Series Slip-On muffler features: Standard sound level is approximately 98 db and quiet core inserts are available separately. This Lightweight Slip-On weighs approximately 5.5 lbs and bolts directly to the stock headpipe.

Apr 4, 2021 · The problem with the XR400 is not the power that the engine makes, but the need to improve the suspension (correct springs and revalve) to get the chassis to perform. The …

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The XR's Only Competition Exhaust System is the optimal choice for performance-minded racers throughout the world. Crank up the horsepower over that of your stock exhaust and smoke the competition with our CNC machined turn down tip, which serves as …

Jul 26, 2011 · The PO fitted a full Higashi exhaust system on my bike, which looks, works and sounds great, but sometimes a bit better than needed. I still have the unmodified original muffler, which is very quiet with the insert, but also very "tame".

The T-4 Slip-On was developed to increase the horsepower and torque throughout the power curve. This silencer is designed to be used with OEM stock head pipes or Pro Circuit head pipes.

Mar 10, 2025 · GPR's Furore Poppy silencer has a carbon look, stainless body and has been developed with a production process that produces zero impact to the environment. It has an …

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