• The first stock diameter crank pulleys available for import applications (First introduced in 2000)
• Real HP & torque gains across entire RPM range
• One of the highest HP/Torque per dollar gains on the market
• Over 8 years of use in "real world" applications from street to strip to rally to road course
• Better than OEM belt fitment & alignment
• Accessory pulleys available seperately for many applications
• CAD designed & CNC'd from 6061 Aluminum billet

Standard Belt Layout (Stock Diameter)

As with our stock diameter crank pulleys many of our customers have also asked for stock diameter pulley sets that do not underdrive their alternators, power steering pumps, superchargers and water pumps. Because of these requests we developed our stock diameter pulley sets. Many customers want the performance benefits of weight reduction without any sacrifices, especially audio enthusiasts as some audio competitions require voltage to remain at a specific level. With our stock diameter pulley sets the alternator and other accessories spin at stock speeds with NO underdrive. This is also important for stock or aftermarket supercharger systems. These systems are either driven off the alternator, air conditioning or power steering sections of the crank pulley and now you can use our stock diameter pulley sets with these supercharger systems and have the same boost you had with the factory crank pulley.st level with the use of the factory diameter crank pulley.

100% of the power gains from the stock pulley sets comes only from weight reduction versus the factory crank pulley. The reduced weight allows for more power transfer to the drive wheels. The stock diameter crank pulleys are available in polished finish only.

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