Tomioka Racing Billet Timing Belt Guide - 2002-2021 Subaru WRX / STI / 2005-2012 Subaru Legacy GT / 1998-2013 Subaru Forester XT

Tomioka Racing Billet Timing Belt Guide - 2002-2021 Subaru WRX / STI / 2005-2012 Subaru Legacy GT / 1998-2013 Subaru Forester XT

The Tomioka Racing Billet Timing Belt Guide is a thick billet aluminum replacement for the flimsy factory timing belt guide on EJ20 and EJ25 engines.

Preventing Timing Belt Skip on High-Revving EJ Engines

The Tomioka Racing Billet Timing Belt Guide is a thick billet aluminum replacement for the flimsy factory timing belt guide on EJ20 and EJ25 engines. Under hard acceleration, high-RPM shifts, or sustained track use, belt movement at the crank sprocket can be enough to skip a tooth -- and on interference EJ engines, a single tooth jump can mean bent valves and a full engine teardown. The billet guide sits over the crank sprocket and prevents lateral belt movement that causes skipping.

Why the Factory Guide Is Inadequate

The factory timing belt guide is a thin stamped piece not designed for the belt loads generated in high-performance applications. Tomioka Racing's billet aluminum replacement provides substantially more rigidity and contact surface to constrain belt movement. A critical upgrade for any EJ build that regularly sees high-RPM use, aggressive launches, or track conditions.

Key Features

• Helps prevent timing belt jump/skipduring hard launches, high-RPM shifts, and aggressive track use.
• Protects your built EJ enginefrom potentially catastrophic timing-related failures.
• Stronger than OEMthanks to a thick billet aluminum construction that resists flex.
• Improved belt controlaround the crank sprocket area where movement is most critical.
• Simple bolt-on upgradethat installs in place of the factory timing belt guide.
• Material:CNC-machined billet aluminum
• Direct replacementfor the factory timing belt guide on Subaru EJ20 and EJ25 engines
• Designed for high RPM use-- ideal for track, time attack, drag, and spirited street driving

Fitment Notes

• Fits 1998-2013 Subaru Forester
• Fits 2005-2012 Subaru Legacy
• Fits 2004-2021 Subaru STI
• Fits 2002-2021 Subaru WRX

Straight From Subispeed

One of the highest value-to-cost upgrades available for the EJ engine in terms of protecting a significant investment. If the car has a built engine or a performance tune and sees regular hard driving, the billet timing belt guide is cheap insurance. Install it during the next timing belt service.

What's Included

• Tomioka Racing billet aluminum timing belt guide
• Mounting hardware

About Tomioka Racing

Tomioka Racing has been engineering bolt-on performance parts for Subaru platforms since 2007, with a design philosophy built around factory-style installation and real-world reliability. Every Tomioka Racing product is engineered to work with the factory setup -- clean installation, correct fitment, and durability under sustained use. For WRX, STI, BRZ, and the 86 platform, Tomioka Racing offers one of the most focused and thoroughly developed bolt-on catalogs available at this price point.