iwis

iwis: Over a Century of German Precision Chain Engineering

Few names in powertrain engineering carry the weight of iwis. Founded in 1916 in Munich, Germany, by Johann Winklhofer and Richard Schmid, the company began as a manufacturer of bicycle chains before quickly evolving into one of the world's foremost producers of high-precision chain and drive solutions. Today, iwis operates on a global scale while maintaining its roots in German engineering excellence — and its headquarters remain in Munich to this day.

What sets iwis apart is an almost obsessive commitment to manufacturing consistency. The company's internal goal is 100% repeatability across the tens of millions of chain links it produces every single day — a standard that demands perfection at every step of the production process. This philosophy translates directly into products that engine builders, OEM suppliers, and enthusiast mechanics can rely on without reservation.

iwis became a supplier to BMW as early as 1939, and has since expanded its OEM relationships to include virtually every major European automaker. Engine timing chain kits from iwis are engineered as complete, vehicle-specific solutions — typically bundling the timing chain itself alongside tensioners, guide rails, sprockets, and seals so that every wear surface is renewed at once. This all-in-one approach reduces the risk of premature failure caused by mixing worn and new components, and it makes the job faster and more straightforward for the technician.

At the heart of any iwis kit is the engine timing chain itself. iwis produces inverted tooth chains, bush chains, and roller chains across a wide range of engine families — from European luxury marques like BMW, Audi, Mercedes-Benz, and Volkswagen to domestic platforms like the GM LS family. Their chains are manufactured to meet or exceed original equipment specifications, making them a trusted choice whether you're performing a high-mileage refresh or building a performance engine from the ground up.

Supporting components are just as critical as the chain itself. iwis engine timing chain tensioners are designed to maintain precise chain tension across the full operating range of the engine, minimizing wear, reducing noise, and preventing the dreaded chain slap that can signal imminent timing failure. Paired with properly engineered camshaft sprockets, these components work in concert to keep the camshaft and crankshaft perfectly synchronized — the foundation of efficient combustion and reliable valve timing.

For applications that use a belt-driven valvetrain, iwis also offers solutions in the form of engine timing belts, rounding out their coverage of timing drive systems across a broad spectrum of engines. Whether your vehicle relies on a chain or belt to drive its camshafts, iwis brings the same standard of German-engineered precision to every product in their lineup.

With more than a century of innovation behind them and a product philosophy built around system-level thinking, iwis remains a benchmark brand for anyone serious about engine timing reliability.