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Yoshimura's Race Series RS-4 exhaust systems are designed with nothing but power in mind! Each Race Series system is developed in accordance with noise compliance regulations imposed by most racing sanctioning bodies worldwide. The RS-4's unique design provides an unrivaled combination of power, along with a quiet exhaust note. These systems remove a good amount of weight from the stock unit. They also feature a polyresonant duplex chamber, a two-staged stepped baffle, and an innovative carbon cone end cap. If you're looking for that competitive edge, get and install one of these Race Series RS-4 exhaust systems from Yoshimura—they come out a winner in both looks and performance! Key features and benefits: * Pentagonal-shaped muffler sleeve and aluminum mount bracket * Front muffler cap functions as a polyresonant chamber which helps reduce noise * Two-stage stepped baffle * Durable high-grade stainless steel tapered header and mid-pipe * Considerable weight reduction * Carbon fiber end-cap comes with a U.S.F.S.-approved spark arrested insert installed in muffler (on most, but not all models) * All applications are marked with appropriate EPA noise emissions labels * Step-by-step directions and all necessary hardware included for an easy installation * For closed course competition only; not intended for street use; this system has not been tested for EPA noise compliance
Not Yet Reviewed
$779.00
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$789.00
Summit Bucks
Yoshimura Signature Series RS-4 exhaust systems feature a pentagonal-shaped muffler sleeve and aluminum mounting bracket. They are a two-stage stepped baffle design with considerable weight reduction over your stock exhaust system. Every RS-4 exhaust system comes with all the necessary hardware included for an easy installation. Options include material and finish—and single or dual configuration. Order the model recommended for your bike application.
Not Yet Reviewed
$789.00
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$1,309.00
Summit Bucks
One of the most popular Dual Sport bikes on the planet is the KTM 500 EXC-F—and now Yoshimura offers the ultimate exhaust option with their all-new Enduro Series RS-12 exhaust systems. Packed with features, the RS-12 Enduro Series offering comes with a USFS-approved spark arrester and massive gains in power. The KTM 500 EXC-F saw gains of 21.8 percent peak hp and 15 percent peak torque on the dyno. On the trail this translates to more 'raw grunt' when you need to get up that rock or over that log. On the street it provides more get-up-and-go to get to the next trailhead. Machined joints provide a more exact fit and longer durability between those muffler removal intervals and provides great tire and brake caliper clearance for an overall superior exhaust system. Key features and benefits: * Proudly designed, developed, and made in the USA! * Aggressive intelligently designed, the RS-12 asymmetrical shaped muffler allows maximize capacity and incorporates a resonance chamber for managing sound and increasing usable power * RS-12's unique profile also provides more clearance for tire and brake caliper * Tapered muffler body inlet design enables the system to be pushed forward to help with weight centralization without sacrificing performance * Massive performance gains with refined power delivery * Just like the works systems Factory Racers use, the RS-12 systems utilizes precision machined joints that provide a superior and exacting fit for joints by better securing the seal between two surfaces with a perfect 360 degree contact surface; this translates into improved system life, fit and performance * New patent pending Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arresters * Has a 'works-look' matte carbon fiber end cap with industry leading design, innovation, and detailing * Carbon end cap covers the RS-12 inner cap, thus improving looks, while providing easier service as compared to other sandwich mounting designs most commonly found in the industry * This system includes a USFS approved spark arrester Important Note: Factory turn signals must be relocated as the muffler outlet is inline of the factory turn signal location.
Not Yet Reviewed
$1,149.00
Summit Bucks
Yoshimura Race Series RS-12 exhaust systems are designed with nothing but power in mind! You will notice many impressive performance details placed throughout the RS-12, from the matte carbon fiber end cap with decal inlays to the precise machined joints, these system takes it to the next level. Each Race Series exhaust system is developed in accordance with noise compliance regulations imposed by most racing sanctioning bodies worldwide. Plus, exclusive Yoshimura "Works Finish" takes on a unique coloring after it goes through a heat cycle on the motorcycle that looks much like those titanium works components that Yoshimura's factory racers use. If you're looking for a competitive edge, look no further than Yoshimura's Race Series RS-12 exhaust systems. Additional features and benefits: * Aggressive, intelligently designed, asymmetrical shaped, the RS-12's profile allows maximized muffler volume to help manage sound, add performance, weight reduction and provides more clearance for tire and brake caliper * Wrapped perforated core * Patent pending Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arresters * End cap design improves durability, and eases servicing as compared to other sandwich mounting designs most commonly found in the industry * Yoshimura "Works Finish" for lasting durability; uniform heat coloration really gives the system a titanium look when it's been through a 15-20 minute heat cycle * Stainless steel mid-pipe/stainless steel muffler/carbon fiber end cap * All applications are marked with appropriate EPA noise emissions labels * For closed course competition only; not intended for street use; has not been tested for EPA noise compliance
Not Yet Reviewed
$1,089.00
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