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Ships within 48 hours · Estimated delivery Oct 9 - Oct 14
you MUST order Big Bore Pro Flo Headers
Fits all new 2025 softails & lowrider st’s with updated cam cover
A meticulously pain staking process
CNC billet aluminum endcap
5” high flow performance rolled cone muffler with stepped baffle from 2 ¼ to 2 ½ inches
2006-2017 DYNA - Big Bore 4.5 Harley-Davidson-M8-Bagger-2020 you MUST order Big Bore4. 5 high flow performance rolled cone muffler with stepped baffle from 2 to 2 inches. Increases bottom to mid range torque and horsepower on all motors. Tuned properly can accommodate 88" to 143". 065 stainless steel headers, stepped from 1 to 1 7 8 to 2 at the collector Hand tig welded from top to bottom Machined stainless steel header collars 18mm o2 bungs with 12mm adapters, allows for stock or autotune sensors Complete hardware kit with
