https://www.dhl.com/us-en/home/tracking.html?submit=1&tracking-id=7971716524 Arrow offers optional mid-pipes for certain motorcycles allowing the user to eliminate the catalytic converter. Arrow mid-pipes are compatible with Arrow Slip-On Exhausts. Features: Optional catalytic converter eliminating mid-pipe Compatible with Arrow Slip-On Exhaust Required if using with Arrow Exhaust Headers TIG welding Stainless Steel Central Link Pipe For Original Or Arrow Silencers Mid-pipe material stainless steel Silencer mounting welded mount Junction (inlet) diameter (mm) 54.00 Junction (outlet) diameter (mm) 54.00 Oxygen sensor plug NO CO sensor plug NO Db Killer NO Weight (Kg) 1.00