Replacement Service Parts
RS-4 MUFFLER DECAL SET (4 pcs) Yoshimura R&D of America, Inc.
Replacement Service Parts
SOUND INSERT KIT 94db RS-4 Muffler, 1.375″ (INS-16-K) Yoshimura R&D of America, Inc.
Replacement Service Parts
SOUND INSERT KIT 94db RS-4 Muffler, 1.500″ (INS-14-K) Yoshimura R&D of America, Inc.
Genuine Accessories
YAMAHA Crank Inspection Plug Red Yoshimura R&D of America, Inc.
Genuine Accessories
YAMAHA Dirt Works Edition Crank Inspection Plug Yoshimura R&D of America, Inc.
Genuine Accessories
YAMAHA Dirt Works Edition Small Engine Plug Yoshimura R&D of America, Inc.
Signature Series Exhaust System
YZ450F 14-17 RS-4 Stainless Full Exhaust, w/ Aluminum Muffler Yoshimura R&D of America, Inc.
Signature Series Exhaust System