No hassle
returns
Live in-stock
inventory
Save over
60% retail
You have no items in your shopping cart.
October Sale: $294.00
Out of Stock
Free Shipping
Part number: CU6141A
Product Details
Unorthodox Racing CU6141A Pulleys - Crank Pulley
Products specifications
Weight 13oz
Crank Pulley & Belts
Underdrive
90% Lighter Than Stock

Unorthodox Racing Crank Pulleys are available in a number of configurations.

Standard Belt Layout (Stock Diameter)

Many of our customers have asked for crank pulleys that do not underdrive their alternators, power steering pumps, superchargers and water pumps. Because of these requests we developed our stock diameter crank pulleys. 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 crank pulleys 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 crank pulleys 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 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)

Our most popular crank pulleys, the ones everyone is familiar with. This version of our crank pulleys increases performance because they underdrive all the accessories (15-20% more power), unlike accessory only kits out there that do not include the crank pulley. This means one you air conditioning is on our crank pulleys give you more power back to the wheels by not letting the air conditioning compressor rob as much power.

However, we do not push the amount or percentage of underdrive too far for two main reasons. First, it is important to keep charging systems, air conditioning, power steering, and water pumps moving fast enough for every day driving. Second, not much horsepower is gained from extreme underdriving. We always keep our underdrive percentage under 20% which is what allows us to maintain factory specified outputs for all your accessories. Our testing has found for most vehicle models you can upgrade your stereo to a system of up to 600 watts (RMS) and not have any charging problems.

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.

Features

  • 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 & CNCd from 6061 Aluminum billet
Reviews
Add your review
R
great so far
S
good price
R
Smooth transaction decent price but would have preferred free shipping which made your lower price equal to your competitors higher pricing. Just sayin
S
Once I've ordered from autoplicity and the part was wrong. I'm giving them another chance and the check out was much easier. Things were updated and now it's smoother so hopefully everything will go well this time
Show All Reviews
Fitment
Acura Integra
2001 Acura Integra GS / RS
2000 Acura Integra GS / RS
1999 Acura Integra GS / RS
1998 Acura Integra GS / RS
1997 Acura Integra GS / RS
1996 Acura Integra GS / RS
1995 Acura Integra GS / RS
1994 Acura Integra GS / RS
1993 Acura Integra GS / RS
1992 Acura Integra GS / RS
1991 Acura Integra GS / RS
1990 Acura Integra GS / RS
Acura MDX
2014 Acura MDX ALL
2013 Acura MDX ALL
2012 Acura MDX ALL
2011 Acura MDX ALL
2010 Acura MDX ALL
2009 Acura MDX ALL
2008 Acura MDX ALL
2007 Acura MDX ALL
2006 Acura MDX ALL
2005 Acura MDX ALL
2004 Acura MDX ALL
Acura TL
2013 Acura TL Type-S
2012 Acura TL Type-S
2011 Acura TL SH-AWD / Type-S
2010 Acura TL SH-AWD / Type-S
2009 Acura TL ALL / SH-AWD / Type-S
2008 Acura TL ALL / Type-S
2007 Acura TL ALL / Type-S
2006 Acura TL ALL / Type-S
2005 Acura TL ALL / Type-S
2004 Acura TL ALL / Type-S
BMW 525i
2001 BMW 525i Base
BMW 650i
2006 BMW 650i Base
Honda Accord
2013 Honda Accord EX / LX
2012 Honda Accord EX / LX
2011 Honda Accord EX / LX
2010 Honda Accord EX / LX
2009 Honda Accord EX / LX
2008 Honda Accord EX / LX
2007 Honda Accord EX / LX
2006 Honda Accord EX / LX
2005 Honda Accord EX / LX
2004 Honda Accord EX / LX
2003 Honda Accord EX / LX
Honda Crosstour
2012 Honda Crosstour ALL
Show All Vehicle Fitments
Return Policy
Returns are easy at THMotorsports
Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy