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• 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 includedYoshimura 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-Z45008-11 RM-Z450
Stainless RS4 Slip On
Part Number: 2192714
MSRP: $395.0008-11 RM-Z450
Stainless RS4 Full System
Part Number: 2192514
MSRP: $595.0008-11 RM-Z450
Titanium – Titanium RS4 Full System
Part Number: 2192177
MSRP: $945.0008-11 RM-Z450
Titanium – Carbon Fiber RS4 Full System
Part Number: 2192172
MSRP: $995.002011 Yamaha YZ450F2011 YZ450F
Stainless RS4 Slip On
Part Number: 234802D320
MSRP: $395.002011 YZ450F
Stainless RS4 Full System
Part Number: 234800D320
MSRP: $645.002011 YZ450F
Titanium – Titanium RS4 Full System
Part Number: 234801D720
MSRP: $995.002011 YZ450F
Titanium – Carbon Fiber RS4 Full System
Part Number: 234801D220
MSRP: $1,045.002011 KTM 350 SX-F2011 KTM 350 SX-F
Stainless RS4 Slip On
Part Number: 263502D320
MSRP: $395.002011 KTM 350 SX-F
Stainless RS4 Full System
Part Number: 263500D320
MSRP: $595.002011 KTM 350 SX-F
Titanium – Titanium RS4 Full System
Part Number: 263501D720
MSRP: $945.002011 KTM 350 SX-F
Titanium – Carbon Fiber RS4 Full System
Part Number: 263501D220
MSRP: $995.00