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Active Autowerkes Double Sided Underdrive Pulley Kit for BMW E9X M3 2008-2014, Billet Aluminum - 13-001D
Active Autowerkes Double Sided Underdrive Pulley Kit for BMW E9X M3 2008-2014, Billet Aluminum - 13-001D - Image 2 Active Autowerkes Double Sided Underdrive Pulley Kit for BMW E9X M3 2008-2014, Billet Aluminum - 13-001D - Image 2

Active Autowerke Double Sided Belt Underdrive Pulley Kit (Part No. 13-001D)

The Active Autowerke 13-001D is a meticulously engineered underdrive pulley kit designed specifically for the BMW E9X M3 models from 2008 to 2014. Constructed from aircraft-grade billet 6061 aluminum and finished with a hard coat anodized surface, this kit offers exceptional strength and durability while maintaining a sleek, understated appearance in your engine bay.

Performance Enhancements

The S65 V8 engine in the BMW E9X M3 has untapped potential, and this underdrive pulley kit effectively unlocks additional horsepower. By redesigning the crankshaft outer pulley, the kit allows for a measurable increase of approximately 12+ horsepower over stock configurations, as verified on Active Autowerke's in-house Mustang dyno.

Key Features

  • Material: Aircraft-grade billet 6061 aluminum with a hard anodized finish
  • Power Gains: 10 RWHP to 12+ HP over stock
  • Complete bolt-on system, easily reversible
  • Includes replacement drive and A/C belts
  • Extra spare double-sided DPK belt included for emergencies
  • Compatible with both DCT and manual transmission models
  • Reduces rotational mass without causing overheating issues
  • Optimized for use with Active Autowerke software for additional performance gains

Installation Notes

Installation of the 13-001D kit is straightforward, allowing enthusiasts to enhance their BMW E9X M3’s performance without extensive modifications. The kit is designed to be user-friendly, ensuring that you can complete the installation with basic tools.

Fitment

  • BMW E9X M3 2008-2014

Before ordering, please confirm whether your E9X M3 utilizes a single-sided or double-sided (DPK) A/C belt configuration, particularly for models produced after late 2007. This attention to detail ensures compatibility and optimal performance.

For installation instructions, click here.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2008-2014
 BMW M3
Many rave reviews and magazine articles have been written about Active Autowerkes, and these kits and their many successors since have become well known for their durability, clever bolt-on engineering, affordable pricing – and their ability to breathe fire into the everyday BMW and its owner. No longer a brand known just around Florida, today's Active Autowerke is known worldwide for its line of flawlessly engineered and manufactured performance parts for the entire Beemer.

As new models and challenges continue to be born, Active Autowerke continues to invent – and deliver – world class, new ideas and innovations that make them run better.

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