ECS Tuning 3.0T 207mm Supercharger Crank Pulley Upgrade Kit

For 3.0T owners chasing serious performance gains, a "dual pulley" upgrade is the go-to solution. While upgrading both the crankshaft and supercharger pulleys delivers an impressive bump in power, installation can be a challenge. With our 207mm Crankshaft Pulley Kit, upgrading your supercharger drive has never been easier!

Designed to increase the supercharger drive ratio without overdriving other accessories, this upgrade increases blower speed and boost pressure to unlock serious horsepower gains. Boasting a 22% increase in supercharger RPM, this pulley supports up to 550 HP when paired with a Stage 2 ECU tune, making it the ultimate solution for enthusiasts looking to maximize power without compromising reliability.

Unlike dual-pulley setups that require multiple modifications and a lengthy installation process, this single overdriven crankshaft pulley delivers greater performance benefits in a simpler package. With increased boost pressure and supercharger RPM, optimized belt engagement, and compatibility with most Stage 2 ECU tunes, our 207mm crank pulley upgrade provides an efficient path to unlocking your engine’s full potential. This pulley bolts directly over the existing crankshaft pulley, eliminating the need to press on a smaller supercharger pulley—saving you time and effort. Unlike smaller supercharger pulleys that can cause belt slippage, this crank pulley upgrade eliminates that risk, delivering consistent and reliable performance. Our 207mm crank pulley upgrade retains the factory crank pulley damper for the accessory drive, preserving the balance and longevity of your engine components.

Crafted from lightweight, single-piece 6061-T6 billet aluminum, this pulley is engineered for maximum strength and durability. Precision CNC-machined cutouts reduce overall weight without sacrificing integrity, and a standardized SAE J1459 groove shape ensures optimal belt engagement. The Type III anodized finish provides superior corrosion and wear resistance, ensuring long-lasting performance in demanding conditions. Extended hardware is included for a precise fit, ensuring a straightforward installation with no special tools required.

BY THE NUMBERS

• OEM B8 S4 Crank Pulley & OEM B8 S4 Supercharger Pulley

  • Crank Pulley Diameter: 162.179mm

  • Supercharger Pulley Diameter: 63.25mm

  • Supercharger Drive Ratio: 2.564:1

  • Supercharger Rotor Speed @ 7200 RPM: 18,462 RPM

• ECS Overdrive Crank Pulley & OEM B8 S4 Supercharger Pulley

  • Crank Pulley Diameter: 187.300mm

  • Supercharger Pulley Diameter: 63.25mm

  • Supercharger Drive Ratio: 2.961:1

  • Supercharger Rotor Speed @ 7200 RPM: 21,319 RPM

• ECS Overdrive Crank Pulley & ECS Supercharger Pulley

  • Crank Pulley Diameter: 187.300mm

  • Supercharger Pulley Diameter: 57.60mm

  • Supercharger Drive Ratio: 3.252:1

  • Supercharger Rotor Speed & 7200 RPM: 23,414 RPM

• ECS 207mm Crank Pulley Upgrade & OEM 63.25mm B8 S4 Supercharger Pulley

  • Crank Pulley Diameter: 207.000mm

  • Supercharger Pulley Diameter: 63.25mm

  • Supercharger Drive Ratio: 3.273:1

  • Supercharger Rotor Speed @ 7200 RPM: 23,565 RPM

PERFORMANCE FEATURES

• Increases supercharger drive ratio from 2.56 to 3.27 with stock pulley—a 22% increase!
• Supports up to 550 HP with a Stage 2 ECU tune
• Lightweight 6061-T6 billet aluminum construction with weight-saving CNC-machined cutouts
• Type III anodized for corrosion and wear resistance
• The standardized SAE J1459 groove shape offers compatibility with the OE belt shape
• Retains factory crank pulley damper for accessory drive stability
• Includes extended hardware for a hassle-free install
• Installs over the OEM crankshaft pulley, providing easy installation and ensuring accessories aren't overdriven

KIT CONTENTS

• ECS 207mm Crankshaft Pulley
• Zinc-Plated Hex Head Screw (8)
• Continental 1360mm Supercharger Drive Belt

PRODUCT DEVELOPMENT

Our 3.0T 207mm Crank Pulley Upgrade was designed, engineered, tested, and quality inspected by our Research and Development team at our Wadsworth, Ohio facility. We strive for the highest level of precision and quality through leading-edge product development technology, including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.