Add this store to favorites. Sign up for Store newsletter. PowerSport Meca shop for gear and accessories. MBRP Standard Muffler Exhaust for Skidoo S Chassis 670 H. The item "MBRP Standard Muffler Exhaust for Skidoo S Chassis 670 H.1998-1999" is in sale since Thursday, April 18, 2019. This item is in the category "eBay Motors\Parts & Accessories\Snowmobile Parts\Exhaust". The seller is "rpm-powersports" and is located in Omaha, Nebraska. This item can be shipped to United States.