The Ultima R1 carburetor is a great upgrade to your Big Dog motorcycle.
The Ultima R1 carbs are fully polished unlike the S&S carburetor.
The Ultima R1 carburetor is a direct replacement for the S&S G Carburetor.
The Ultima R1 carburetor accepts all the same jets the S&S G carburetors use.
With a relocated accelerator pump nozzle the Ultima has improved acceleration performance over the S&S G carburetor.
Thunderjets are bolt on for the Ultima R1 carburetor.
All the ports are pre-machined allowing simple and quick installation or removal of the Thunderjet.
The Ultima R1 carburetors sold by WSW are gone through before shipping.
Ultima uses cheap seals and gaskets which leak out of the box.
WSW replaces these with high quality gaskets designed to be Gasoline and Ethanol resistant for longer life.
We also rejet to accommodate the average Big Dog 107/117 running around.
Generally we find most BDs work best with a 31.5 intermediate, no they don't make this one, and a .076 main.
If you require different jetting due to a spike air cleaner e.t.c. let us know before you purchase.
This product was added to our catalog on Tuesday 13 February, 2024.
