Big Gun Exhaust Systems Designed by 4-Stroke National Champion Mike "Young Gun". All Big Gun Exhaust Systems feature exclusive tapered or stepped headpipes.

• EVO R Series exhaust system is the best cross over 4-stroke exhaust system available today

• Gives you all you need to go from the street to trail, and meets all performance and federal noise regulations

• Comes ready to be a performance or more subtle quiet pipe to meet the strict 94-96db sound restrictions

• 18 gauge mild steel pipe

• 6061 T-6 aluminum outlet end cap with removable tip for spark arrestor

• 1-3/4 internal stainless steel core

• USFS approved screen type spark arrestor

• Big Gun Vortex Quiet Insert

• Endless strand hi-performance silencer packing with stainless steel screen

• 6 month manufacturer's warranty

The weight is 5 lbs. (It is not ceramic coated, which makes it lighter.) The OEM muffler weighs in at about 12 lbs.