Vortech V-2 Si-Trim Supercharger Head Unit - CW Rotation - Curved Discharge - Polished (2E128-048)
Polished V-2 Si-Trim Head Unit for Efficient High-Power Street & Strip Builds
The Vortech V-2 Si-Trim Supercharger Head Unit is engineered for the latest generation of improved-breathing, high-power street and strip engines. Designed to deliver strong airflow with exceptional efficiency at elevated boost levels, the Si-Trim provides substantial power gains while maintaining smooth, quiet operation and long-term reliability.
This V-2 Si-Trim features Vortech's advanced helical gear design with a 3.61:1 internal step-up ratio, offering quieter operation without compromising performance. A ventilated gearcase assembly prevents internal pressure buildup common in non-vented designs, while integrated baffling and a simple oil slinger system ensure consistent lubrication of gears and bearings. The unit is factory pre-filled with Vortech synthetic supercharger fluid and includes an integrated dipstick plus a remote fluid drain hose for easy service without removing the supercharger.
Key Features
- Si-Trim compressor optimized for modern, improved-breathing engines
- Helical-cut gears for quieter operation and smooth power delivery
- 3.61:1 internal step-up ratio
- Vastly improved flow and efficiency at higher boost levels
- Ventilated gearcase to eliminate internal pressure issues
- Integrated gearcase baffling for proper oil control
- Simple oil slinger design for consistent lubrication
- Factory pre-filled with Vortech synthetic fluid
- Integrated dipstick and remote drain hose for easy maintenance
- Direct bolt-on replacement for Vortech V-1, V-2, V-3, V-4, or V-7 bracketry
Bypass Valve Requirements
- Superchargers exceeding 6 PSI require a Vortech Standard Bypass Valve or Vortech Maxflow Race Bypass/Blowoff Valve
- Superchargers exceeding 10 PSI require a higher-capacity valve such as a Vortech Maxflow Race Bypass/Blowoff Valve, Vortech Mondo Bypass Valve, or Vortech BV57 Valve
Performance Specifications
- Internal Step-Up Ratio: 3.61:1
- Maximum Speed: 52,000 RPM
- Maximum Boost: 22 PSI
- Maximum Airflow: 1,150 CFM
- Maximum Power: 775 HP
- Peak Efficiency: 78%
Dimensions
- Discharge OD: 2.75"
- Discharge ID: 2.38"
- Inlet OD: 3.5"
- Inducer Diameter: 3.1"
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 2E128-048
- Series: V-2 Si-Trim
- Rotation: Clockwise (CW)
- Discharge: Curved
- Finish: Polished
Important Notes
- NOT AVAILABLE OR LEGAL FOR SALE IN CALIFORNIA
- Performance specifications apply to units equipped with a standard gearcase
FAQs
- What type of build is the V-2 Si-Trim best suited for?
The V-2 Si-Trim is ideal for high-power street and strip vehicles using modern, improved-breathing engine combinations. - Can this head unit replace an older Vortech supercharger?
Yes. The V-2 Si-Trim is a direct bolt-on replacement for existing Vortech V-1, V-2, V-3, V-4, and V-7 bracketry.
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized Vortech Superchargers dealer with extensive experience supporting high-performance street and strip builds. From selecting the correct V-2 Si-Trim configuration to matching bypass valves and supporting components, our team ensures your supercharger setup is dialed in correctly from day one.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

