In the never ending pursuit to craft the very best exhaust system, Yoshimura introduces the latest titanium RS-12 system for the 2023 Honda CRF450R. Why did they go through the task of introducing a whole new system for the CRF450? With the latest engine spec, the engineers wanted to get the best most usable power from this new model.  This new system has been developed with & is the closest thing to what 5x World Champion Tim Gajser, Mitch Evans, Ken Roczen & Chase Sexton have been using to grab holeshots & win races. By increasing the resonator in the RS-12 muffler by 50cc (a 14% increase) & adding a second resonator to the header, engineers were able to unlock some insane usable power from this new & enhanced system. What does this translate to? * Easier power delivery * Smoother frontside torque * Allows the rider to ride in an higher gear, thus freeing up suspension. * Less rider fatigue * Made with the premium grade Japanese titanium tubing, this new system adds 5% max... ...

The 2024 Kawasaki KX450 has undergone a ton of changes, one of them requiring an all-new exhaust system. We were eager to develop the best exhaust system possible for the new Green Machine. Working with multi-time GNCC off-road Champion Steward Baylor we were able to really squeeze every ounce of performance from the new KX. Not only performance but installation on the new KX has been optimized. Working around the new KX chassis we were able to make the new oval-port header fit effortlessly. Performance gains are massive with our RS-12 Signature Series system, adding a whopping 23.8% max hp & an incredible 16.4% max torque. With gains like this some would think that the new KX would be hard to control, not the case. With the help of our hydroformed oval header, our development team has made the power delivery much smoother than stock! Our RS-12 muffler has loads of features including our PTF insert system that makes changing inserts a breeze & an optimized muffler shape with added... ...

After over three years in development & testing the RS-12 is here! With all its details, the RS-12 takes the system to a new level: enhanced performance gains, weight reduction & fit when compared to previous generation design   * Developed & tested in the heat of over months of factory level racing * Aggressive, intelligently designed, asymmetrical shaped RS-12 profile allows maximized muffler volume * RS-12 systems utilize precision machined joints: enhanced system life, fit & performance * Carbon end cap covers inner cap mounted design improves durability * Easy to install & remove sound inserts & spark arrestors * Tapered muffler body inlet design of RS-12 enables the system to be pushed forward thus helping with weight centralization without sacrificing performance * Proudly designed, developed & made in the USA Article: YOSHIMURA YOSHIMURA RS-12 Signature Serie Full Exhaust System
- Yamaha YZ 250 F
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The new RS-12 system adds 5% max hp & 6.5% max torque to the new engine spec with its smaller throttle body & different ECU settings. What does this translate to? * Easier power delivery * Smoother frontside torque * Allows the rider to ride in an higher gear, thus freeing up suspension. * Less rider fatigue * Yoshimura's RS-12 is proudly designed, developed & manufactured in Chino, California. Article: YOSHIMURA YOSHIMURA RS-12 Signature Series Full Exhaust System ...

After over three years in development & testing the RS-12 is here! With all its details, the RS-12 takes the system to a new level: enhanced performance gains, weight reduction & fit when compared to previous generation design * Developed & tested in the heat of over 24 months of factory level racing * Aggressive, intelligently designed, asymmetrical shaped RS-12 profile allows maximized muffler volume  * RS-12 systems utilize precision machined joints: enhanced system life, fit & performance * Carbon end cap covers inner cap mounted design improves durability * Easy to install & remove sound inserts & spark arrestors * Tapered muffler body inlet design of RS-12 enables the system to be pushed forward thus helping with weight centralization without sacrificing performance * Proudly designed, developed & made in the USA Article: YOSHIMURA YOSHIMURA RS-12 Signature Series Silencer Stainless Steel/ Carbon
- Honda CRF250R/RX
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RS-12 Replacement Decal 4 piece Set: * Qty 1 x Wrap-around muffler decal * Qty 3 x End-cap Decals * 2 x Outward Facing Decals * 1 x Inward Facing Decal Article: YOSHIMURA YOSHIMURA RS-12 Stickers Kit ...

While other exhaust brands just carried over their Yamaha YZ250F offerings to include 2024 model, on the dyno & track, the new YZ told us there was more on the table. So our R&D team went to work to optimize the new Yamaha. Revised for the 2024 is our RS-4 slip-on for the new YZ250F. Adding 1% max HP & 1.2% max torque, the RS-4 slip on is a great option for adding some power. RS-4 also has the ability to add a spark arrestor for off-road adventures. Yoshimura's RS-4 system is proudly designed, developed & manufactured in Chino, California. * Pentagonal-shaped sleeve * Front muffler cap functions as a polyresonant chamber which helps reduce noise * Two-stage stepped baffle * Carbon fiber end-cap * Stainless steel tail-pipe Article: YOSHIMURA YOSHIMURA RS-4 Signature Series Silencer ...

Yoshimura USA RS-2 full systems for quads are remarkable thanks to the versatile manner in which they can be used, optimising the power output of the machine while complying with noise emissions standards. * A high-performance stainless exhaust system that optimises the power output of your quad * Greater system/muffler package

Volume: greater & more linear exhaust gas flow * Pyramid-shape muffler: made form aluminium with steel end cap Article: YOSHIMURA YOSHIMURA RS2 Inox Full Exhaust System
- Kawasaki KFX 450


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Yoshimura USA RS-2 exhausts are remarkable  thanks to the versatile manner in which they can be used. Machined from high-quality materials, they contribute to optimising the performance of your machine.  * Pyramid-shape muffler: made from stainless with alu body & steel end cap * Stainless pipes * Specific design, taking its inspiration from a diamond * Greater muffler volume for enhanced exhaust gas flow * Developed to obtain a more linear exhaust gas flow * Exhaust not type-approved for road use Article: YOSHIMURA YOSHIMURA RS2 Inox Full Exhaust System
- Yamaha YFM 700 Raptor
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Yoshimura USA RS-2 exhausts are remarkable  thanks to the versatile manner in which they can be used. Machined from high-quality materials, they contribute to optimising the performance of your machine.  * Pyramid-shape muffler: made from stainless with alu body & steel end cap * Stainless pipes * Specific design, taking its inspiration from a diamond * Greater muffler volume for enhanced exhaust gas flow * Developed to obtain a more linear exhaust gas flow * Exhaust not type-approved for road use Article: YOSHIMURA YOSHIMURA RS2 Inox Full Exhaust System
- Yamaha YFM 700 Raptor
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