Subaru Boxer engines have always responded really well to light weight crank pulleys. By reducing the rotational mass, you will see an increase in horsepower and torque with a quicker rev speed.
The Kartboy Aluminum Crank Pulley V2 retains the same, clean black design as the original but adds 6 holes in the pulley to accommodate the EJ engine that lack the tensioner. This pulley was designed to be used with the Gates Stretch Belt Install Tool, and when paired together, the install is simple and painless for the installer.
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