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  • 304 stainless steel headers and inlets
  • T-6061 aerospace grade aluminum canisters
  • TIG welded aluminum brackets
  • Heavy-duty stainless steel rivets
  • 2-piece billet end caps that accept a USFS approved spark arrestor and the exclusive HMF quick-change low dB Quiet Core
  • Packed with Silent Sport brand pillow packing that carries full 10-year manufacturers warranty
  • All HMF products carry an industry leading 2-year manufacturers warranty

 
This item fits the following models:
 
Yamaha YFM400 Grizzly 4x4 Auto 2007 - 2008
Yamaha YFM450 Grizzly 4x4 Auto 2007 - 2012
Yamaha YFM450 Grizzly 4x4 Auto EPS 2011 - 2012
Yamaha YFM450 Grizzly 4x4 Auto IRS 2009 - 2010