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Yoshimura Signature Series RS-12 exhaust systems deliver huge power at a very light weight! These systems offer better handling, thanks to a lower centralized mass coefficient. Systems feature a uniquely-styled muffler body with a carbon fiber cone end cap. Front cap design functions as a polyresonant chamber to lower dB output, while improving mid- to top-end power. Two-staged, stepped baffle tapered headpipe delivers optimal flow and performance. If you've been striving for a competitive edge, take things to the next level with the Yoshimura Signature Series RS-12 exhaust systems! Order the model designed for your application. Additional features and benefits: * The applications for the Signature Series line cover the entire powersports spectrum, including many of Yoshimura's offroad applications * Maximum muffler volume which helps manage sound, add power, and provide more clearance for the rear tire and brake caliper * Improved performance gains and weight reduction * Utilizes precision machined joints which provide a superior fit and improve system life and performance * Titanium systems include non-spark-arrested 99 dB motocross insert (unless noted) * Mufflers available with glossy carbon fiber, satin titanium, or brushed aluminum sleeve * Stainless systems come with 94 dB insert installed (meets AMA competition requirements), 2 meter max insert in the box * CARB/EPA tail-pipe emissions compliant; all applications are marked with appropriate EPA noise emissions labels and certified by an independent laboratory for EPA noise compliance * All Signature Series components are tested, documented, and marked, as required by federal and state regulations
Not Yet Reviewed
$899.00
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$1,149.00
Yoshimura Street Series RS-4 mufflers deliver more power and fewer decibels. These light exhausts feature a carbon fiber cone end-cap, a 2-stage stepped baffle, and striking good looks. Their front cap design functions as a poly-resonant chamber, making for quieter mufflers with improved mid to top-end power. Material options of stainless steel and carbon fiber are available for the muffler body. Yoshimura's Street Series offers street-legal options for almost everything on two wheels. Order the model recommended for your bike application.
Not Yet Reviewed
$769.00
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$789.00
Yoshimura Signature Series RS-4 mufflers deliver more power and fewer dB, with an improved sound for the rider who values quality over volume. These light off-road mufflers feature a carbon fiber cone end-cap, a 2-stage stepped perforated baffle, and noticeable good looks. And their front cap design functions as a poly-resonant chamber, making for quieter exhaust notes with improved mid- to top-end power. USFS-approved spark arrester sound inserts come installed in the mufflers. Material options of polished aluminum and stainless steel are available for the mufflers. Yoshimura Signature Series RS-4 components are tested, documented, and marked as required by federal and state regulations. Order the model recommended for your application.
Not Yet Reviewed
$619.00
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$789.00
Yoshimura presents their RS-9 Series Enduro exhaust systems—an evolution of Yoshimura's early off-road efforts crafting off-road exhaust systems. The Enduro Series systems are all equipped with USFS-approved spark arrestor, forest-friendly noise levels, and are tailpipe emissions compliant. Kawasaki recently revamped the KLX-140 line up of trail bikes, and Yoshimura now offers a full system for all three wheel sizes of the mean green trail machine 140, 140L and 140G. This new RS-9 Enduro Series full system not only increases the power, and torque, it also reduces weight over the stock system. Add to that an unmistakable one-of-a-kind look, and legendary Yoshimura exhaust note and it's over! Key features and benefits: * Parallelogram-shaped muffler * Increased muffler volume over stock system, resulting in better throttle response and improved noise cancellation * Light-weight muffler construction with carbon fiber end-cap * Reduced weight over OEM system: Yoshimura Full System weight 5.6 lbs. vs Stock System weight 6.7 lbs. * Stainless steel header and tail-pipe *A laser cut heat shield and a USFS-approved spark arrester included with this system * Repack kits, optional inserts and spark arresters are available for all models Important Note: The RS-9 Series exhaust system is designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket accessories not found on a bike as delivered from the factory, may not be compatible with this product.
Not Yet Reviewed
$619.00
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