This fully modified Rooster Tail Engines carburettor includes changes that increase cfm and fuel flow to their maximum which has shown to produce 500+ rpm to our fully modified engines with a large boost to the low and mid range torque.
These WT-990 carburettors have been custom modified with high quality, stainless steel sealed bearings on each side of the throttle shaft to help support and seal this area from dust ingress and air leaks.
When dust or sand enters the shaft bore area on an unmodified carburettor it causes excessive wear on both the shaft and the internal bore of the carburettor body. When unmetered air enters the engine via the worn shaft, it leads to a lean condition, which then causes an engine failure.
This modification stops 99% of dust and sand from entering the carburettor bore and the engine, thus making it more reliable and saving you from an expensive engine rebuild.
Due to the extra fuel flow required you will need to install a high flow fuel line kit - High Flow Fuel Line Kit Spares
- Walbro WT-990
- 15.88mm bore
- 12.9mm venturi
- Independent tune-able high and low speed jets
This carburettor does not have an internal choke.