Description
INDYCNC Beer Exhaust Flapper – Demolition Derby Header Flap
Add function and attitude to your build with the INDYCNC Beer Exhaust Flapper, designed for demolition derby headers where style and practicality collide.
This flapper can be welded or bolted on, giving you flexibility for your setup. Built from all-steel construction, it’s made to handle heat, vibration, and the abuse that comes with derby competition.
The exhaust flap serves a real purpose—a quick visual check to see that your car is running—while also letting you show off a cool, eye-catching beer-themed design in the pits or on the track. Whether you’re warming up, idling, or rolling through the staging lanes, this flapper lets everyone know your motor is alive and ready.
Features & Specs:
- Designed for demolition derby headers
- Weld-on or bolt-on installation
- Heavy-duty all-steel construction
- Exhaust flap moves to indicate engine is running
- Unique beer-style design for added flair
- Built to handle heat, vibration, and derby abuse
From function to flair, the INDYCNC Beer Exhaust Flapper is a small detail that adds personality, visibility, and durability—because even in derby, style still matters 🍺🔥










