COBB Lightweight Crank Pulley Black (300102-BK) | Subaru WRX 2002-2014 / STI 2004-2021

The COBB Lightweight Crank Pulley reduces rotational mass at the front of the engine, helping your Subaru rev more freely and respond more quickly to throttle input. By replacing the heavier factory pulley with a precisely machined, lighter-weight unit, this upgrade improves engine responsiveness without compromising reliability or drivability on street or track.

KEY FEATURES

• Reduces rotational mass for sharper throttle response
• Direct bolt-on replacement for the factory crank pulley
• Engineered to maintain proper accessory drive function
• Balanced design minimizes vibration at all operating speeds
• Durable construction suitable for daily driving and spirited use

TECHNICAL SPECIFICATIONS

• CNC-machined from high-quality aluminum for strength and weight savings
• Engineered to retain OEM diameter for consistent belt speed and accessory performance
• Precision-balanced to help protect engine bearings and rotating components
• Corrosion-resistant finish for long-term under-hood durability
• Designed to work with factory belts and accessory configurations

VEHICLE FITMENT

• Subaru WRX 2002-2014
• Subaru STI 2004-2021

COBB delivers proven, data-driven performance solutions engineered to optimize your Subaru with unmatched precision and reliability.