Heat Riser Valve by Hedman Hedders®. Universal heat riser valve adapters are available in two and three bolt designs, and fit 2-1/2" and 3" collectors.
- Made of High Quality Materials
- Ensure Optimum Performance
- Built to Last
You must use a Hedman T.E.M.S. hedder or Hedman factory built E.O. exempt hedder to be legal in California.
Hedman Hedders®, a prominent header manufacturer for racing and street header marketplaces, started as a one-man shop in 1954. At first the company's products were designed for straightline drag racers. Over time they became highly popular with elite racing engine builders and racers for their outstanding performance and proven reliability. Made to environmental requirements using the latest computer technology, Hedman Hedders headers are guaranteed to outlast any headers you've used before.