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Unorthodox Racing Crank Pulleys
  Unorthodox Racing - Ultra Series
Standard Belt Layout - Underdrive Series (Ultra S)
Application: Lexus
  • Lightweight 6061-T6 Billet Aluminum
  • CNC Machined to .001"
  • Real HP & torque gains across entire RPM range
  • Over 7 years of use in "real world" applications from street to road course to rally to dragstrip
  • Better then OEM belt fitment & alignment
  • The broadest range of applications available
  • High quality polished & anodized finishes
  • Polished Aluminum (call for Black, Red or Blue)
Here are our tried and true crank pulleys. Additional power gains are seen from the underdriving of all the accessories (which accounts for about 15% additional gain). However, we do not push the amount of underdrive for two main reasons. First - it is important to keep charging systems, air conditioning, power steering, and water pumps moving fast enough for everyday driving. Second - not much horsepower is gained from extreme underdriving. In most apps all of our underdriving is done with the crank pulley, not the accessory pulleys. This is done so max weight loss can be achieved at the crank where most of the HP gains are found.

Understanding the 9 digit Part #  A B C D E F G H I
A
  Series (0 = Underdrive, 1 = 12V Charger)
B  Product (2 = Standard Belt Crank, 3 = Single-Belt Crank)
C D  Vehicle Make
E  Internal Use (0 = Assembly, 1 = Non-Assembly)
F G  Vehicle Model
H  Diameter (0 = Underdrive, 1 = Stock Diameter, 2 = Overdrive)
I  Color (Polished)
 
Lexus Year Description Part # Color Price Buy Now
GS300 93-02 3.0L DOHC 021210702 Polished Alum. $189
IS300 00-03 3.0L DOHC 021210702 Polished Alum. $189
SC300 92-00 3.0L DOHC 021210702 Polished Alum. $189