If you're looking to squeeze a bit more power out of your BMW E9X M3, the Active Autowerke Replacement AC Belt is a solid upgrade. With an impressive boost of around 10 RWHP—that’s a gain of over 12 HP compared to stock—you'll definitely feel the difference when you hit the gas. It’s not just about the numbers, though; it’s about that thrill of driving a machine that’s truly tuned to perform.
This isn’t some complicated setup either. The complete bolt-on system is designed with ease in mind, making installation a breeze. Even if you’re not a seasoned mechanic, you can get this thing on without breaking a sweat. Plus, it’s easily reversible, so if you ever want to switch things back, you won’t have to worry about a hassle.
One of the standout features is the use of aircraft-grade billet 6061 hard coat anodized aluminum. This material is tough as nails, which means it can handle the demands of spirited driving without flinching. And for those of you who like to keep everything in check, it even comes with replacement drive and A/C belts. They’ve even thrown in an extra spare DPK belt where it applies—talk about thoughtful.
Whether you're rolling with a DCT or a manual transmission, this belt is designed to fit right in. It also helps reduce rotational mass, which means your engine can rev up quicker and respond better. And don’t worry about overheating issues that some smaller pulley designs can cause; this setup keeps things cool while still delivering that extra punch.
If you really want to take it to the next level, consider pairing this with AA Software for even more gains. It’s all about getting the most out of your ride, and with this upgrade, you’re well on your way to transforming your driving experience.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov