YOSHIMURA KAWASAKI KX450F/KX450X 19-23 RS-12 STAINLESS FULL SYSTEM
The current generation Kawasaki KX450 has won over a lot of riders with its balanced chassis and predictable power delivery. Yoshimura felt thereās still more on the table for improvement, enter their new RS-12.
With countless hours of track and dyno testing, the KX450 responded well to the 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.Ā Just what the doctor ordered.
Kawasaki KX450 RS-12 Features and benefits:
- Rubber mounted RS-12 muffler dampens vibration to subframe .
- Aggressive intelligently designed, the RS-12 asymmetrical shaped muffler allows maximise capacity and incorporates a resonance chamber for managing sound and increasing usable power. RS-12's unique profile also provides more clearance for tyre and brake calliper.
- Improved performance gains with refined linear power delivery.
- Just like the works systems our Factory Racers use, RS-12 systems utilise 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 fibre 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.
- Proudly designed, developed and made in the USA!
- Repack Kits, optionalĀ InsertsĀ andĀ Spark ArrestersĀ are available for all models
ADDITIONAL INFORMATION
VIEW INSTALLATION INSTRUCTIONS
BIKE FITMENT
KAWASAKI
- KX450F 2019-2023
- KX450X 2021-2023
Product Information
Product Information
Shipping & Returns
Shipping & Returns








YOSHIMURA KAWASAKI KX450F/KX450X 19-23 RS-12 STAINLESS FULL SYSTEM
YOSHIMURA KAWASAKI KX450F/KX450X 19-23 RS-12 STAINLESS FULL SYSTEM
The current generation Kawasaki KX450 has won over a lot of riders with its balanced chassis and predictable power delivery. Yoshimura felt thereās still more on the table for improvement, enter their new RS-12.
With countless hours of track and dyno testing, the KX450 responded well to the 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.Ā Just what the doctor ordered.
Kawasaki KX450 RS-12 Features and benefits:
- Rubber mounted RS-12 muffler dampens vibration to subframe .
- Aggressive intelligently designed, the RS-12 asymmetrical shaped muffler allows maximise capacity and incorporates a resonance chamber for managing sound and increasing usable power. RS-12's unique profile also provides more clearance for tyre and brake calliper.
- Improved performance gains with refined linear power delivery.
- Just like the works systems our Factory Racers use, RS-12 systems utilise 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 fibre 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.
- Proudly designed, developed and made in the USA!
- Repack Kits, optionalĀ InsertsĀ andĀ Spark ArrestersĀ are available for all models
ADDITIONAL INFORMATION
VIEW INSTALLATION INSTRUCTIONS
BIKE FITMENT
KAWASAKI
- KX450F 2019-2023
- KX450X 2021-2023
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The current generation Kawasaki KX450 has won over a lot of riders with its balanced chassis and predictable power delivery. Yoshimura felt thereās still more on the table for improvement, enter their new RS-12.
With countless hours of track and dyno testing, the KX450 responded well to the 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.Ā Just what the doctor ordered.
Kawasaki KX450 RS-12 Features and benefits:
- Rubber mounted RS-12 muffler dampens vibration to subframe .
- Aggressive intelligently designed, the RS-12 asymmetrical shaped muffler allows maximise capacity and incorporates a resonance chamber for managing sound and increasing usable power. RS-12's unique profile also provides more clearance for tyre and brake calliper.
- Improved performance gains with refined linear power delivery.
- Just like the works systems our Factory Racers use, RS-12 systems utilise 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 fibre 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.
- Proudly designed, developed and made in the USA!
- Repack Kits, optionalĀ InsertsĀ andĀ Spark ArrestersĀ are available for all models
ADDITIONAL INFORMATION
VIEW INSTALLATION INSTRUCTIONS
BIKE FITMENT
KAWASAKI
- KX450F 2019-2023
- KX450X 2021-2023














