Fits Models:
YFZ450R 09‐20
YFZ450X 10‐11
 
Finish: Blue anodized titanium Factory 4.1 RCT muffler w/ PowerBomb header and carbon fiber end cap.
 
FACTORY 4.1TM SYSTEMS
• System features stainless steel PowerBomb or MegaBomb header and midpipe
• Factory 4.1 muffler available in natural titanium with titanium end caps or anodized with carbon fiber as noted
• The lightest full system available
• Superior power and performance – horsepower improved throughout the rpm range
• Feature exclusive proprietary Chamber Core, MegaBomb and PowerBomb technology
• Factory Forward Engineering centralizes mass, improves handling
• Made from premium quality American materials
• Customize with performance tuning inserts and spark arrestor module
• Meets AMA sound requirements on most models; inserts available for others