Barker's Quiet Cores are manufactured in two different sizes, a 1 inch and a 1.5 inch. The 1 inch quiet core comes in 2 variations, a standard flow and a high flow for higher cc machines. Several machines require the high flow quiet core: Grizzly slip ons, TRX 700XX, all RZR exhausts, Sportsman 850, and the Buell slip on (for better horsepower we suggest the1.5" snowmobile quiet core for Buell customers). For snowmobile sleds you MUST choose the 1.5 inch, as the 1 inch quiet core is not compatible with these systems. We recommend the 1 inch quiet core for all other systems, however the 1.5 inch is also compatible. The 1.5 inch does not quiet the system as much as the 1 inch. Both 1 inch quiet cores include a spark arrestor, the 1.5 inch does not.
**IF PURCHASING A QUIET CORE FOR YOUR SNOWMOBILE, PLEASE SELECT THE 1.5" QUIET CORE FROM THE DROP DOWN MENU.**
**GRIZZLY SLIP-ON, TRX 700XX, RZR EXHAUSTS, & SPORTSMAN 850 REQUIRE THE HIGH FLOW QUIET CORE, PLEASE SELECT THE HIGH FLOW OPTION FROM THE DROP DOWN MENU.**
The Barker's exhaust system quiet core is designed to reduce the decibel output from your Barker's exhaust system. The 1 inch quiet core fits all of the current Barker's exhaust systems that feature an exhaust can (except the sled systems), so it can be added to your system even if it was purchased years ago. Note that a quiet core can result in a slight loss of 0.5 to 1.5 horsepower. In some regulated areas, a quiet core is required. Please check your local ordinances and don't hesitate to contact us if you have questions.