S&S Cycle Gear - 33-4242 For Harley Motorcycles 1977-1999 Simpson 2:1 Boss Fat Cat is

2:1 Boss Fat Cat is a stepped header system at the head 1 5/8" to 1 3/4" to 1 7/8" at collector and and 2 1/2" where the muffler goes to the header

Molded one-piece foam foundation covered with premium grade black vinyl on a 16-gauge powder coated steel base plate

Note:Fits standard 4" x 7" motorcycle license plates

forged pistons with rings and wristpins

S&S Cycle Gear - 33-4242 For Harley Motorcycles 1977-1999 Simpson 2:1 Boss Fat Cat isFeatures All steel construction Welded in screen Higher flow than stock Elongated breather pocket scavenge hole for increased suction Specs Product Name Gear Type Breather Material Steel Features Oversized (+. 03") Units Each Riding Style Street