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Yoshimura R&D of America Announces 2011 RS-4 Applications

Published December 23rd, 2010

The RS-4 muffler was developed in conjunction with the Rockstar Makita Suzuki Yoshimura race team with one purpose in mind: winning championships. That goal was accomplished during the 2010 AMA Supercross and Motocross season when Ryan Dungey and his Yoshimura-powered RM-Z450 took the motocross world by storm as the first rookie in the history of the sport to dominate both series. 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. RS-4 systems are the choice of both the Factory Honda and Suzuki teams.

Yoshimura R&D of America Announces 2011 RS-4 Applications - Photo 1 of 4The RS-4 features:

  • Polyresonant duplex chamber
  • Two-staged stepped baffle
  • Maximized muffler volume
  • Innovative carbon cone end cap
  • 3 muffler options: aluminum, titanium, or carbon fiber
  • Titanium and stainless full systems available
  • Low volume sound insert included

Yoshimura now has RS4 slip-on and full-system applications available for the 2011 Suzuki RM-Z450, 2011 Yamaha YZ450F and 2011 KTM 350 SX-F. Check www.yoshimura-rd.com for additional applications and updates.

Yoshimura R&D of America Announces 2011 RS-4 Applications - Photo 2 of 4

2011 Suzuki RM-Z450

08-11 RM-Z450

Stainless RS4 Slip On

Part Number: 2192714

MSRP: $395.00

08-11 RM-Z450

Stainless RS4 Full System

Part Number: 2192514

MSRP: $595.00

08-11 RM-Z450

Titanium – Titanium RS4 Full System

Part Number: 2192177

MSRP: $945.00

08-11 RM-Z450

Titanium – Carbon Fiber RS4 Full System

Part Number: 2192172

MSRP: $995.00

Yoshimura R&D of America Announces 2011 RS-4 Applications - Photo 3 of 4

2011 Yamaha YZ450F

2011 YZ450F

Stainless RS4 Slip On

Part Number: 234802D320

MSRP: $395.00

2011 YZ450F

Stainless RS4 Full System

Part Number: 234800D320

MSRP: $645.00

2011 YZ450F

Titanium – Titanium RS4 Full System

Part Number: 234801D720

MSRP: $995.00

2011 YZ450F

Titanium – Carbon Fiber RS4 Full System

Part Number: 234801D220

MSRP: $1,045.00

Yoshimura R&D of America Announces 2011 RS-4 Applications - Photo 4 of 4

2011 KTM 350 SX-F

2011 KTM 350 SX-F

Stainless RS4 Slip On

Part Number: 263502D320

MSRP: $395.00

2011 KTM 350 SX-F

Stainless RS4 Full System

Part Number: 263500D320

MSRP: $595.00

2011 KTM 350 SX-F

Titanium – Titanium RS4 Full System

Part Number: 263501D720

MSRP: $945.00

2011 KTM 350 SX-F

Titanium – Carbon Fiber RS4 Full System

Part Number: 263501D220

MSRP: $995.00

About Yoshimura R&D of America: Yoshimura is “The Leader in Performance” and has been for more than 55 years. With unmatched skills, knowledge and passion for racing, Yoshimura is on the forefront of the aftermarket exhaust industry. Yoshimura pipes are race bred and feature the same legendary performance, fit and quality that has been their trademark for more than five decades. To learn more about Yoshimura and view their wide variety of performance products, visit www.yoshimura-rd.com.


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