The TillotsonTCT carburetor is really more than just a carburetor. it’s a fully integrated fuel system that combines a form of mechanical fuel injection with enhanced atomization and accelerated fuel flow. 
Suit Honda GX160/GX200 and clone motors.
While looking much like a standard Honda carb, the Tillitson TCT operates with an internal needle regulating fuel flow. The needle height is fully adjustable with the simple turn of a screw. This allows the most precise of adjustments.
The needle is activated via an internal cam regulated by the throttle linkage.
Recommended for improvements to mild engines, degoverned with performance exhaust.