Pro Underdrive Kit Race Only 7" 20R/22R/RE/RET Use Without Alternator
Pro Underdrive Kit Race Only 7" 20R/22R/RE/RET Use Without Alternator
Our Price: $184.95

Part Number: 1016123

Details Fitment

Pro Underdrive Kit

(Race Only)

High RPM race engines often overdrive the water pump making the engine's cooling system inefficient. These Crankshaft Power Pulleys reduce water pump and alternator RPM providing better cooling and less power loss.

The lightweight of these billet aluminum pulleys will reduce the drag on your engine, while the underdrive design will allow your engine to turn your front belt accessories with less effort. All this means you gain performance and a cleaner looking engine compartment. Another added benefit is the built-in degree wheel on the front of the pulley that will allow you to dial in your top dead center point much more accurately.

This Underdrive Kit for race applications includes a 7" billet water pump pulley, single groove 4" crank underdrive pulley, adjustable timing tag, front balancer bolt, and belt. The single groove 4" diameter Crankshaft Power Pulley that comes in this kit is made from 6061 T-6 aluminum and is then hard anodized for extra strength.


  • The 7" kits will not work with the stock power steering pump.
  • This kit is intended for high RPM applications only.
  • This kit is intended to be used without an alternator.
  • For high RPM race applications with alternator and pulley choice, see Part #: 1016124.
  • For street applications and pulley, options see Part #: 1016120.

This product should not be used in a manner that violates Federal EPA Laws.

Contact our Tech Support Line for further information at 928-855-6341.

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Note: Images are for illustration purposes only. Images may not represent the product listed. Please contact customer service with any questions or concerns: 1-928-505-2501.

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Great service March 13, 2018
Reviewer: Brian Heter from New Philadelphia , OH United States  
The best ppl around any time i have questions or need parts tony in tech always help me with anything i need and need to know great guy thanks for all ur help thru they last few years

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