Cloyes Engine

Cloyes: The World Leader in Engine Timing Drive Systems

When it comes to keeping an engine's valvetrain in perfect synchronization, few names carry more authority than Cloyes Gear & Products. Headquartered in Fort Smith, Arkansas, Cloyes has spent more than five decades engineering and manufacturing precision timing drive components for everything from daily commuters to high-output race engines. Today, Cloyes is widely recognized as a world leader in timing drive systems, trusted by professional engine builders, dealerships, and DIY enthusiasts alike.

A Heritage Built on Precision

Cloyes' reputation was forged on the racetrack. With over 50 years of motorsports heritage, the company developed an engineering culture obsessed with dimensional accuracy, material quality, and long-term durability. That same DNA flows through every product in the modern lineup — whether it's a stock replacement piece or a high-performance component designed for the rigors of competition. All Cloyes parts are CAD-designed and manufactured using premium materials, then extensively tested for function, fitment, and durability before they ever reach an engine bay.

Complete Coverage for the Entire Timing System

One of Cloyes' greatest strengths is the breadth of its catalog. Rather than offering a handful of fast-moving SKUs, Cloyes provides coverage for the entire timing drive system. The cornerstone of the lineup is the Engine Timing Chain Kit — available in multiple configurations ranging from basic chain-and-tensioner bundles to fully comprehensive kits that include VVT sprockets (phasers), solenoids, water pumps, and accessory drive components. This all-in-one approach reduces comebacks and ensures every component of the system is renewed at the same time.

For repairs that call for individual components, Cloyes also offers stand-alone Engine Timing Chains that are pre-stressed and heat-treated for increased durability. Each chain is engineered with precision pitch control to ensure proper chain-to-sprocket tooth fitment — a detail that matters enormously for quiet operation and long service life.

Builders tackling a full engine rebuild or performance upgrade will find Cloyes' Engine Timing Sets indispensable. These sets bundle the critical drive components together, and the high-performance options include the brand's legendary Hex-A-Just® True® Roller sets, which have been a fixture in the performance community for generations.

Proper tension is just as important as the chain itself. Cloyes Engine Timing Chain Tensioners are engineered to meet or exceed OEM performance requirements, maintaining correct chain load throughout the engine's operating range and preventing the slack that leads to timing noise, misfires, or catastrophic failure. Completing the system, Cloyes Engine Timing Covers seal and protect the entire timing drive assembly, helping to maintain oil control and shield precision components from contamination.

Stock Replacement and High Performance — One Brand

A key differentiator for Cloyes is its dual focus on stock replacement and high-performance applications. Most timing parts specialists occupy one niche or the other; Cloyes excels at both. Whether the job calls for a direct OEM-equivalent repair on a family sedan or a purpose-built timing set for a race engine that has been line-honed and clearanced, Cloyes has a solution engineered specifically for that application. That versatility — backed by one of the most comprehensive timing drive catalogs in the industry — is why professional engine builders and parts professionals consistently reach for Cloyes first.