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Ships within 48 hours · Estimated delivery Sep 16 - Sep 21
All Pro Flo header systems will marry existing SPC mufflers as long as they are both for the same bike
4” high flow performance cone into a 4” body with a 2 ½” perf core baffle
4” rolled cone muffler with a 2 ¼ coiled perforated baffle for increased torque and a deep tone
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You cannot swap Big Bore
2018-PRESENT M8 Softail ST & Sport Glide - Lanesplitter Harley-Davidson-FXR-1988 All Pro Flo header systemsFits all new 2025 softails & lowrider sts with updated cam cover. We fit *all models 2018 2025 except breakout & fatboy 4 rolled cone muffler with a 2 coiled perforated baffle for increased torque and a deep tone 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
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