ProCharger F-3R-121 Self-Contained Centrifugal Supercharger Head Unit with Splined Input Shaft & Threaded Volute - 2,400 HP - 3,100 CFM - 40 PSI Max Boost - Satin Finish - PC314A-121R
The ProCharger F-3R-121 Self-Contained Centrifugal Supercharger Head Unit is engineered for professional motorsports and extreme competition vehicles requiring enormous airflow, exceptional durability, and proven race-winning performance. Supporting up to 2,400 supercharged horsepower while flowing an incredible 3,100 CFM, the F-3R-121 is built for elite drag racing, radial racing, no-prep, offshore marine, land-speed, and other maximum-effort racing applications.
Capable of producing up to 40 PSI of boost, the F-3R-121 delivers massive airflow through ProCharger's largest race compressor architecture. ProCharger specifies the motor base horsepower recommendation for this model as CALL, allowing it to be properly matched to highly specialized competition engine combinations.
Professional F-3R Race Configuration
The F-3R-121 features a splined input shaft and threaded volute, making it ideal for dedicated crank-drive systems and professional race plumbing. These race-oriented features provide the strength and flexibility required for today's highest-horsepower competition vehicles.
The compressor utilizes a massive 12-inch volute, 5.5-inch inlet hose connection, 4.8-inch inducer, 6.75-inch exducer, and a 4-inch outlet hose connection with a 3.59-inch outlet inside diameter. This high-capacity airflow package is engineered for serious race engines where compressor efficiency and airflow are critical.
Self-Contained Race Lubrication
The F-3R-121 utilizes ProCharger's proven self-contained lubrication system, eliminating the need for engine oil feed and return plumbing. A dedicated 6-ounce Race Oil capacity simplifies installation and keeps supercharger lubrication independent from the engine's oiling system.
The F-3R-121 uses a 5.63:1 internal step-up ratio, supports a maximum impeller speed of 72,000 RPM, and is available with reverse rotation for additional flexibility when designing custom race chassis and crank-drive systems.
Built for Extreme Competition
Every ProCharger F-3R-121 is manufactured using premium materials, precision machining, and race-proven engineering. Premium bearings, precision-ground shafts, a rugged gear case, and an advanced compressor design provide the durability required for the most demanding racing environments.
This listing is for the satin-finish ProCharger F-3R-121 head unit. Mounting brackets, crank drives, pulleys, belts, intercoolers, charge tubing, bypass valves, fuel-system components, tuning, and installation hardware are not included unless otherwise specified.
Features
- Supports up to 2,400 supercharged horsepower
- Maximum airflow rating of 3,100 CFM
- Produces up to 40 PSI of boost
- Motor base horsepower recommendation: CALL
- Splined input shaft
- Threaded volute
- Self-contained lubrication system
- 6 oz. Race Oil capacity
- 12-inch volute
- 5.5-inch inlet hose connection
- 4.8-inch inducer and 6.75-inch exducer
- 4-inch outlet with 3.59-inch outlet I.D.
- 72,000 RPM maximum impeller speed
- 5.63:1 internal step-up ratio
- Reverse rotation available
- Satin finish
Quick Specs
- Manufacturer: ProCharger
- Model: F-3R-121
- Part Number: PC314A-121R
- Product Type: Self-Contained Centrifugal Supercharger Head Unit
- Finish: Satin
- Special Features: Splined Input Shaft, Threaded Volute
- Maximum Supercharged Horsepower: 2,400 HP
- Motor Base Horsepower Range: CALL
- Maximum Airflow: 3,100 CFM
- Maximum Boost: 40 PSI
- Volute Diameter: 12 in.
- Inlet Hose Diameter: 5.5 in.
- Inducer Diameter: 4.8 in.
- Exducer Diameter: 6.75 in.
- Outlet Hose Diameter: 4 in.
- Outlet Inside Diameter: 3.59 in.
- Maximum Impeller Speed: 72,000 RPM
- Internal Step-Up Ratio: 5.63:1
- Oil Capacity: 6 oz. Race Oil
- Self-Contained Oiling: Yes
- Reverse Rotation: Yes
Published specifications are based on the ProCharger catalog. Actual airflow, horsepower, and boost depend on the complete engine combination, pulley ratio, intercooling, fuel system, engine management calibration, and operating conditions.
Frequently Asked Questions
Why does ProCharger list the motor base horsepower as "CALL"?
The F-3R-121 is intended for highly specialized racing combinations. ProCharger recommends selecting this supercharger based on the complete engine package rather than a fixed horsepower range.
Does the F-3R-121 require engine oil feed and return lines?
No. The F-3R-121 uses ProCharger's self-contained lubrication system with a dedicated 6-ounce Race Oil capacity, eliminating the need for engine oil feed and return plumbing.
Why Buy from Beefcake Racing?
When you're building an extreme horsepower race program, every component matters. Beefcake Racing can help you select the correct ProCharger head unit, crank drive, pulley ratio, fuel system, intercooler, bypass valve, and supporting components to build a reliable, championship-level forced induction package.
Questions? Call 1-855-827-7223 or email sales@beefcakeracing.com.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
