Your V Twin Fuel Injection Specialist
High-Performance Harley Davidson Products & Tuning
- Upgrading outdated v twin fuel injection systems from Magnetti Marelli to Delphi.
- Providing stand alone v twin fuel injection systems for racing or custom applications.
- Custom mapping on a dynojet dynamometer to correct air fuel ratio according to instrument readings NOT a copied map.
- Updated oil pumps for twin cam and m8 with dual scavenging rotors (my patent).
- The best combinations of parts learned from experience with many dyno tune sessions over 30 years dyno experience.
- Innovations ahead of the competition.
![graphic design of a engine and Dan Thayer name on it](https://vtwinfuelinjection.com/wp-content/uploads/2023/06/thayerz.png)
WELCOME TO OUR STORE
What You Can Buy From Us
![left view of cool looking motorcycle](https://vtwinfuelinjection.com/wp-content/uploads/2023/06/Harley-Davidson-Transparent-PNG.png)
![right view of cool looking motorcycle](https://vtwinfuelinjection.com/wp-content/uploads/2023/06/Motorcycle-Free-PNG-Image.png)
![](https://vtwinfuelinjection.com/wp-content/uploads/2023/06/dan-thayerrrr.png)
OUR BRANDS
Brands We Carry
![dynojet logo](https://vtwinfuelinjection.com/wp-content/uploads/2023/06/dy2.png)
![drag specialties logo](https://vtwinfuelinjection.com/wp-content/uploads/2023/06/drag2.png)
![python3 logo](https://vtwinfuelinjection.com/wp-content/uploads/2023/06/pytho1.png)
About Thayer Sales & Services
Thayer Sales
45+ Years in the Industry Since 1975
Just get it DONE, making things work that others said wouldn't work and making stuff to sell that others said wouldn't sell
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