Tomei Aluminum Billet Timing Belt Guide Subaru WRX STI EJ20 EJ25 02-12

Tomei began operations in 1968 as a race car tuner in Japan. Over the last 40 years Japan has emerged as one of the leaders in automotive research, racing, and culture. Tomei products have been utilized in nearly every motor sport imaginable. Tomei???s racing heritage means their research and design team have first hand knowledge of the extreme demands racing puts on an engine. Using only the highest quality materials means that Tomei???s products can handle the intense strain and heat a purpose built engine will experience whether it be on the street or the track. Tomei???s attention to detail is second to none. All of their products are thoroughly researched and engineered to achieve optimal efficiency. Because of even miniscule differences in measurements can cause catastrophic engine failure, all Tomei products fall within strict tolerances. Tomei machines all of their engine components to enhance airflow and ensure proper fitment and seal.

Horizontally opposed engines pistons combust at 180 degrees; increasing the chances of the camshafts not performing at their maximum lift. Because of this, installing high lift camshafts in these engines may create unnecessary belt vibration leading to the pulley spinning off the rotating assembly. Without the pulley in its rightful place, the valves and the pistons are guaranteed to make contact with the pistons, destroying your engine. Subaru created a component to eliminate this costly damage, the belt guide. However, the factory belt guide is constructed from thin sheet metal which lacks strength and rigidity; it simply cannot securely maintain the belt and pulley at times. Tomei has constructed a beefy belt guide cut straight from aluminum with an extended length to securely apply more tension to the timing belt. This product comes in handy when immediate changes in torque are experienced by the engine, eliminating belt whip. The Anodized surface creates a smooth and precise belt track as well, and dresses up the engine bay.