COBRA 4-1/2" NH Series Mufflers - Black 6289RB Timber Solo Seat Feature a one-piece aluminum backing

Feature a one-piece aluminum backing plate/carb support bracket

1-3/4" and step up to 1-7/8" before merging into the collector to increase flow and improve performance

The 4-inch muffler body has proprietary technology to prevent bluing making this slip-on virtually blue proof

The LeoVince heat protection casing has been specifically designed to combine practicality and design

Adjustable wrist wrap with Velcro closure and thermoplastic rubber Biltwell shield

COBRA 4-1/2" NH Series Mufflers - Black 6289RB Timber Solo Seat Feature a one-piece aluminum backing50 state legal (declared manufacturer replacement parts) Black 4 1 2" body, rolled end tip with gloss black inner tip Upper Cut design where the angle matches the line of the stockbags Fits extended stock bags Made in the U. S. A.