TruDrive Overdrive Crankpulley — Precision-Engineered Boost for the Audi 3.0T

The important things:

• WEIGHT - Heavy pulleys rob power , go ahead ask what your crankpulley weighs. Somewhere along the way people forgot this (and companies made more money by not adding CNC time for weight reduction). Historically, lightweight pulleys have always been a sought after upgrade.
• STRENGTH - Stainless main hub for easy installation and no aluminum to compress (safer)
• Lightweight aluminum outer pulley
• Modular design so you can swap pulley sizes 
• 12.9 Grade Hardware Included with pre-applied blue loctite 

The TruDrive Overdrive Pulley is engineered for Audi enthusiasts seeking reliable, repeatable gains from the 3.0T supercharged platform. Designed to increase supercharger speed safely and efficiently, the TruDrive delivers the rapid boost response, mid-range surge, and top-end power that the 3.0 community has come to expect from high-quality overdrive crank pulleys. Look we didn't reinvent the pulley, we evaluated existing designs and asked how we could make them better. We found areas to add strength, reduce weight, and add sizes that the community needed. 

Lightweight Exterior. Reinforced Core. Zero Compromise.

Every TruDrive pulley features a CNC-machined aluminum outer shell, strategically designed for maximum weight reduction. By minimizing rotational mass, throttle response improves and the supercharger spins up with less parasitic drag—resulting in sharper acceleration.

Inside, a precision-formed stainless steel inner hub provides uncompromising strength. This dual-material construction ensures long-term structural integrity, eliminating concerns of cracking or hub separation that can occur with lightweight single-material designs. The stainless core anchors the pulley securely to the crank, providing assured safety against breakage even under elevated boost levels.

Purpose-Built for the Audi B8.5 S4 3.0T

Drawing from the proven performance traits of leading overdrive pulleys in the Audi community, the TruDrive Overdrive Pulley provides:

• Increased blower speed for stronger boost delivery across the entire RPM range

• Significant mid-range torque gains, improving real-world acceleration and roll-on performance

• Compatible with both single- and dual-pulley tuning, offering flexibility for staged upgrades

• OEM-level fitment, maintaining proper belt alignment and accessory drive operation

• Interchangeable outer pulley rings allow quick ratio changes without removing the stainless core

Engineered for Enthusiasts Who Demand More

The B8.5 S4 responds exceptionally well to crank overdrive increases, delivering noticeable gains even on moderate tuning setups. The TruDrive pulley maximizes this potential by applying modern materials and manufacturing precision to a platform that rewards efficiency, reliability, and airflow.

Whether you’re chasing quicker spool, higher peak boost, or a stronger top-end charge, the TruDrive Overdrive Pulley delivers performance you can feel without sacrificing safety or longevity.

Includes

• 12.9-grade high-strength mounting hardware (if you'd like to upgrade to 14.9 for a discount, email us)

• Blue Loctite threadlocker for secure, vibration-resistant installation

• Stainless steel inner core assembly

• Outer pulley ring in the size of your choice, fully interchangeable for easy ratio changes

• No Hype, excess weight, soft aluminum to explode, or ridiculous pulley textures that wear off in areas where belts don't slip .. just a product that makes sense.