Twisted Choppers Exhaust Head Tube Flange for 1984-Up Harley-Davidson Evo Twin Cam
Building custom exhaust pipes for a Harley-Davidson Big Twin starts with a head tube that forms cleanly and fits the port correctly. This Twisted Choppers one-piece formed head tube is designed for all 1984-Up Evolution and Twin Cam Big Twin engines, giving fabricators a ready-to-use starting point for building custom pipes and headers that fit the port opening correctly from the first tack weld.
Key Features
- One-piece formed head tube for custom exhaust pipe and header fabrication
- Fits all 1984-Up Evolution and Twin Cam Harley-Davidson Big Twin engines
- 1.75-inch OD mild steel tubing; formed end is 1.875-inch OD x .54-inch long
- Overall length no less than 4.5 inches; actual length may vary
- Sold as a pair; flanges not included
- Made in the USA
Technical Specifications
- Tube OD: 1.75 inch
- Formed end OD: 1.875 inch
- Formed end length: .54 inch
- Overall length: Minimum 4.5 inch (varies)
- Material: Mild steel
- Qty: Sold as a pair
Fitment Notes
- Fits 1984-Up Evolution and Twin Cam Harley-Davidson Big Twin engines
- Exhaust flanges are not included; order separately
- Head tube is for fabrication use; requires welding
Adam B. –
Great price!
Robert Roup –
I can’t thank you guys enough, I order alot of these and never have issues. Your shipping is n point and customer service is even better. I will continue to do business with you guys. We are out of Houston. HOUSTON PERFORMANCE BAGGERS