Yoshimura RS-4: Suzuki, Yamaha, KTM

2011 Off-Road Motorcycle Exhaust

The Yoshimura 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 Suzuki 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.

The Yoshimura 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 yoshimura-rd.com for additional applications and updates.

Motorcycle Applications:

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

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

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