Built for high-performance and race multi-point EFI setups, this billet throttle body flows 1000 CFM through a 4150 square-bore flange. CNC-machined for ruggedness and durability, it uses a progressive linkage system and offset throttle shafts so engine vacuum assists plate closure for more precise control and better drivability.
Specifications:
- CFM: 1000
- Barrels: 4
- Bore Diameter: 4x1.75"
- Throttle Bore: 1.750"
- Flange Style: 4150/4160 Square Bore
- Material: Billet Aluminum
- Finish: Clear/Polished
- Height: 2"
- Part Number: 112-577
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What flange does the 112-577 throttle body use?
A 4150/4160 square-bore flange, rated at 1000 CFM.
What is it made from?
CNC billet aluminum with a clear/polished finish.
Is this throttle body street legal?
No — it's legal for sale and use only on Racing Use Only vehicles that are never registered or driven on the street.

