News Yoshimura Exhaust: 2012 YZ450F/YZ250F

Yoshimura Exhaust: 2012 YZ450F/YZ250F

2012 Yamaha Yoshimura Exhaust

The dirt-savvy RS-4 and RS-4D Yoshimura exhaust (slip-on and full systems) are now available for 2012 Yamaha YZ450F and YZ250F motorcycles.

The RS-4 muffler was developed in conjunction with the Factory Suzuki race team with one purpose in mind: winning championships.

The RS-4 is a unique design with predicated power, a side benefit of a quiet earthy exhaust note that speaks volumes for performance, and offers increased horsepower and torque. It is available as a full system, in either Titanium or Carbon Fiber, and comes with an ultra-lightweight carbon fiber end-cap.

The new RS-4D builds on the technology that has made the RS-4 a force to be reckoned with on the racetrack, enhancing its rock solid performance.

The RS-4D boasts a unique dual-outlet design that increases the amount of open area at the exhaust outlet. With dual internal baffles, the RS-4D increases the exhaust gas flow rate, resulting in smoother power delivery and increased throttle control, and offers increased horsepower and torque throughout the power curve, especially in the bottom to mid RPM range where riders need it most.

The Yamaha RS-4D is available as a full system, in either Titanium or Carbon Fiber, and comes with an ultra-lightweight carbon fiber end-cap.

For additional information, click here.

2007-2012 Yamaha YZ250F RS-4 Applications:

  • Stainless/Aluminum RS-4 Slip-on
    Part Number: 2310723
    MSRP – $395
  • Stainless/Aluminum RS-4 Full System
    Part Number: 2310523
    MSRP – $595
  • Titanium/Titanium RS-4 Full System
    Part Number: 2310182
    MSRP – $945
  • Titanium/Carbon RS-4 Full System
    Part Number: 2310187
    MSRP – $995

2007-2012 Yamaha YZ250F RS-4D Applications:

  • Titanium/Carbon RS-4D Full System (Available March 1st, 2012)
    Part Number: 231001E220
    MSRP – $1,095
  • Titanium/Titanium RS-4D Full System (Available March 1st, 2012)
    Part Number: 231001E720
    MSRP – $1,045

2010-2012 Yamaha YZ450F RS-4 Applications:

  • Stainless/Aluminum RS-4 Slip-on
    Part Number: 234802D320
    MSRP – $395.00
  • Stainless/Aluminum RS-4 Full System
    Part Number: 234800D320
    MSRP – $645
  • Titanium/Titanium RS-4 Full System
    Part Number: 234801D720
    MSRP – $995
  • Titanium/Carbon RS-4 Full System
    Part Number: 234801D220
    MSRP – $1,045

2010-2012 Yamaha YZ450F RS-4D Applications:

  • Titanium/Titanium RS-4D Full System
    Part Number: 234801E720
    MSRP – $1,095
  • Titanium/Carbon RS-4D Full System
    Part Number: 234801E220
    MSRP – $1,145

Ron Lieback
Ron Lieback
One of the few moto journalists based on the East Coast, Ron Lieback joined the motorcycle industry as a freelancer in 2007, and is currently Online Editor at Ultimate Motorcycling.

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