SP Concepts Mid Length Elsinore Pro Flo 2-Into-1 Exhaust For Harley Low Rider ST / Sport Glide Engineered for riders chasing maximum performance and a head-turning design, the SP Concepts Elsinore Pro Flo Exhaust features new Pro Flo Chambers to optimize exhaust reversion and flow. The resultstronger torque, higher horsepower, and a look that commands attention. When you want your bike to sound, run, and look like no other, the Pro Flo delivers. Features: 4 rolled cone muffler offers increased flow for high performance applications Designed to work with properly tuned high performance motors from 88 to 143 2 1/2 baffle for increased bottom and mid-range torque .065 stainless headers step from 1 3/4 to 1 7/8 to 2 at the collector TIG welded by hand from top to bottom Machined stainless header collars 18mm O2 bungs with 12mm adapters for performance and stock O2 sensors Includes all hardware and brackets Heat shields available separately Available in a variety of finishes: Stainless, Polished Stainless, Black and Black Onyx Works Edition pipes are precisely pie-cut and tig welded back together by hand Note: This pipe should not be installed without a fuel tuner. This pipe is designed specifically for high performance applications and is not recommended for stock motors.