Big Gun EVO-R Slip-On Muffler — Yamaha YFZ 450R (2009-2025), 4-Stroke

The EVO-R slip-on is the muffler-only version of Big Gun's flagship race series. Hard-anodized 6061 aluminum oval canister with a TIG-welded reinforced bracket, paired with a removable USFS-approved screen-type spark arrestor. Bolts to the OEM head pipe.

• Hard-anodized 6061 aluminum oval muffler
• TIG-welded reinforced bracket
• USFS-approved removable screen-type spark arrestor
• Bolts to OEM head pipe
• Closed-course / competition use

Fitment: 4-stroke bike specific — fits the following models:

• Yamaha YFZ 450R (2009-2025)

This is a 4-stroke exhaust. It is engineered for the 4-stroke engine architecture above and physically will not fit a 2-stroke bike. Verify your engine type before purchase.