Description

Anti-Slip Jaguar Range Rover performance crank supercharger lower pulley AJ133 Aj126

Jaguar lower crank Performance supercharger pulley by Alpha Jag is an upgrade developed for Jaguar, Land Rover and Range Rover vehicles equipped with the AJ126 3.0L Supercharged V6 and AJ133 5.0L Supercharged V8 engines.

Increasing the effective crank pulley diameter drives the supercharger faster, providing greater boost potential and stronger performance throughout the powerband when combined with the proper ECU calibration.

Lightweight Performance Design

The Alpha Jag lower crank pulley is designed with weight reduction in mind, minimizing unnecessary rotating mass while delivering the pulley ratio required for increased supercharger performance.

Reducing rotating weight is particularly valuable in a performance application where every component contributes to overall response and efficiency.

Anti-Slip Belt Surface

Higher supercharger speeds place greater load on the belt drive system.

Our crank pulley incorporates an anti-slip surface designed to increase belt grip and minimize belt slip, helping maintain more consistent supercharger drive under high-load and high-RPM conditions.

Complete Upgrade Package

The Alpha Jag lower pulley includes:

• Alpha Jag performance lower crank supercharger pulley
• Anti-slip belt surface
• New supercharger belt
• Upgraded metal idler pulley

This provides the key hardware needed for a proper lower-pulley installation rather than supplying the crank pulley alone.

Custom ECU Calibration Recommended

Increasing supercharger speed changes the airflow and boost characteristics of the engine, so proper ECU calibration is strongly recommended.

Alpha Jag tuning is not limited to a generic off-the-shelf calibration. We use vehicle-specific datalogging to tailor the tune around your individual vehicle, fuel quality, pulley configuration, supporting modifications and performance goals.

Our ECU tuning can be performed fully remotely from your phone, right in your own driveway, making custom Alpha Jag tuning available to customers throughout the United States and internationally.

Works With Additional Performance Upgrades

The Alpha Jag lower crank pulley can be incorporated into builds using:

• Alpha Jag ECU tuning
• Alpha Jag TCU tuning
• Upper supercharger pulley
• Performance intake
• Supercharger porting
• Exhaust upgrades
• Cooling upgrades
• Other supporting performance modifications

The calibration can be revised as the vehicle build evolves.

ENGINE COMPATIBILITY

3.0L Supercharged V6 – AJ126

5.0L Supercharged V8 – AJ133

Popular applications include:

Jaguar F-Type

Jaguar XE
Jaguar XF
Jaguar XFR
Jaguar XJ
Jaguar XJR
Jaguar XK
Jaguar XKR
Jaguar F-Pace
Range Rover
Range Rover Sport
Range Rover Sport SVR
Land Rover models equipped with compatible AJ126 or AJ133 supercharged engines

Please contact Alpha Jag with your year, model and engine if you are unsure about compatibility.