Big Gun EVO-R Full Exhaust System — KTM 450 SX-F (2011-2012), 4-Stroke

Big Gun's EVO Racing Series was built to deliver maximum horsepower and torque across the RPM range. The EVO-R full system pairs 304 stainless steel head and mid pipes with a hard-anodized 6061 aluminum oval muffler and a TIG-welded reinforced bracket. Lighter than stock, with a removable screen-type USFS-approved spark arrestor.

• 304 stainless steel head and mid pipes
• Hard-anodized 6061 aluminum oval muffler with TIG-welded bracket
• USFS-approved removable screen-type spark arrestor
• Lighter than the OEM system
• Closed-course / competition use

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

• KTM 450 SX-F (2011-2012)

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.