Cloyes has been manufacturing quality timing drives and components since the 1920’s.  In 1966, we printed our first high performance catalog featuring the industry’s first “matched” performance timing gear sets. Cloyes has been developing and producing innovative High Performance cam drives ever since.

Cloyes was the FIRST to offer . . .

• factory matching to ensure accurate and consistent center distance
• a three keyway adjustable timing feature
• a unique, multi-keyway design that avoids installation errors (patented)
• reduced center distance sets for align bored engines
• a TRUE® Roller timing chain set (patented)
• an infinitely and easily adjustable, Hex-a-Just®, timing system (patented)

Perfect Timing for Fast Weekends!

That first performance catalog offered eight performance timing sets.  Our latest catalog offers over 125 performance sets, and countless other accessories like our Quick Button™ Timing Cover.  Our product line offers something for every level of racer.  We have a complete listing of Heavy Duty and entry level Street True® Roller sets for the budget minded racers.  And for serious performance, our Original True®, Billet True®, Hex-a-Just® and Quick Adjust® True® Roller sets are the class of the field.

(Click here to see and compare product features).

The patented Hex-A-Just® was an industry breakthrough when first introduced in 1992.  The accuracy and simplicity of the Hex-A-Just® system will save you hours of valuable set-up time.  Sprockets are made of SAE 1144 induction heat-treated, billet steel. Matched with Cloyes Premium True® Roller chain, this set gives you unmatched performance.

Our Dual Idler Gear Drives are cut from billet steel, and heat-treated for extreme durability.  The Heavy Duty Idler Shafts are the key to an accurate and consistent Power Stroke.

For over 40 years, the Cloyes name has been synonymous with the highest quality, performance timing drives.  We are committed to upholding our hard-earned reputation, and meeting the high expectations of today’s racers.

We invite you to browse our site, and please feel free to send us your comments or feedback, as well as your new product ideas.