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Yoshimura KX450F 19-23 / KX450X 21-23 RS-12 Stainless Full Exhaust, W/ Aluminum Muffler

The current generation Kawasaki KX450 has won over a lot of riders with its balanced chassis and predictable power delivery. We felt there’s still more on the table for improvement, enter our new RS-12.

With countless hours of track and dyno testing, the KX450 responded well to our RS-12 with crisp and clean usable power that is up across the entire rpm spectrum. The result, max HP was up 9.6% and torque was up as well at 5.6%.

Yoshimura RS-12 will improve your experience on the green machine and decrease dB level from stock noise levels. Just what the doctor ordered.

Proudly designed, developed and made in the USA!

  • Rubber mounted RS-12 muffler dampens vibration to subframe
  • 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.
  • Improved performance gains with refined power delivery.
  • Just like the works systems our Factory Racers use, RS-12 systems utilize precision machined joints. Machined joints provide a superior and exacting fit for joints by better securing the seal between two surfaces with a perfect 360 degree contact surface which 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.
  • Works-look matte carbon fiber end cap with industry leading design, innovation and detailing as expected from Yoshimura.
  • 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.
  • Repack Kits, optional Inserts and Spark Arresters are available for all models

      This product was 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.

      Attention international customers: This product was designed and tested to be compatible with vehicles in the U.S. marketplace only. Compatibility, including fitment and performance, may vary by marketplace.

      Fitment:

      • Kawasaki KX450F 2019
      • Kawasaki KX450F 2020
      • Kawasaki KX450F 2021
      • Kawasaki KX450F 2022
      • Kawasaki KX450F 2023
      • Kawasaki KX450X 2021
      • Kawasaki KX450x 2022
      • KAWASAKI KX450X 2023
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      Yoshimura KX450F 19-23 / KX450X 21-23 RS-12 Stainless Full Exhaust, W/ Aluminum Muffler

      SKU: YO-244720S320
      Regular price $1,999.99 $1,899.99 5% off
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      Yoshimura KX450F 19-23 / KX450X 21-23 RS-12 Stainless Full Exhaust, W/ Aluminum Muffler

      The current generation Kawasaki KX450 has won over a lot of riders with its balanced chassis and predictable power delivery. We felt there’s still more on the table for improvement, enter our new RS-12.

      With countless hours of track and dyno testing, the KX450 responded well to our RS-12 with crisp and clean usable power that is up across the entire rpm spectrum. The result, max HP was up 9.6% and torque was up as well at 5.6%.

      Yoshimura RS-12 will improve your experience on the green machine and decrease dB level from stock noise levels. Just what the doctor ordered.

      Proudly designed, developed and made in the USA!

      • Rubber mounted RS-12 muffler dampens vibration to subframe
      • 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.
      • Improved performance gains with refined power delivery.
      • Just like the works systems our Factory Racers use, RS-12 systems utilize precision machined joints. Machined joints provide a superior and exacting fit for joints by better securing the seal between two surfaces with a perfect 360 degree contact surface which 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.
      • Works-look matte carbon fiber end cap with industry leading design, innovation and detailing as expected from Yoshimura.
      • 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.
      • Repack Kits, optional Inserts and Spark Arresters are available for all models

          This product was 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.

          Attention international customers: This product was designed and tested to be compatible with vehicles in the U.S. marketplace only. Compatibility, including fitment and performance, may vary by marketplace.

          Fitment:

          • Kawasaki KX450F 2019
          • Kawasaki KX450F 2020
          • Kawasaki KX450F 2021
          • Kawasaki KX450F 2022
          • Kawasaki KX450F 2023
          • Kawasaki KX450X 2021
          • Kawasaki KX450x 2022
          • KAWASAKI KX450X 2023