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Unorthodox Racing Pulleys      
 
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Unorthodox Racing Crank Pulleys
Race Pulleys
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  • Real HP & torque gains across entire RPM range
  • One of the highest HP/Torque per dollar gains on the market
  • The broadest range of applications available
  • 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
  • If you have more questions about this product, please Contact Us
 
Product Specification
BrandUnorthodox Racing

Standard Belt Layout (Stock Diameter)

Unorthodox states 100% of the power gains from the stock diameter pulleys comes only from weight reduction versus the factory crank pulley. The reduced weight allows for more power transfer to the drive wheels. Any of our accessory pulleys that are listed individually can be used in any combination with our stock diameter crank pulley or purchased as a set. The stock diameter crank pulleys are available in polished finish only.

Standard Belt Layout (Underdrive)

For most applications all of the underdriving is done at the crank pulley, not the accessory pulleys. This is done so maximum weight loss can be achieved at the crank where most of the horsepower gains are realized. The Ultra Series underdrive crank pulleys are available in polished aluminum finish.

Single Belt Conversion (Underdrive)

 

Single-belt crank pulley conversions go even further to provide you with the highest possible power gains. They are also a must in many of the Acura/Honda engine swaps where the stock pulley will not fit because of clearance issues. The single belt design only drives the alternator . This makes for an extremely light piece that will provide you with excellent power gains. Single-belt crank pulleys are also perfectly streetable and can be used in many Acura/Honda applications where the A/C and P/S are being removed for street or track use. Our single-belt conversion crank pulleys are only available in polished aluminum finish.