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 »  Home  »  Product Reviews  »  Subaru  »  Impreza (RS, WRX, STI)  »  Engine / Power  »  Searching for a Lightweight One-Piece Driveshaft.
Searching for a Lightweight One-Piece Driveshaft.
By Michael Anthony | Published  10/24/2005 | Engine / Power | Rating:
A Wonderful Modification to an Already Great Car!

Conclusion:

By now it should be clear.
The A.C.P.T. carbon fiber one-piece Driveshaft is one of the best
modifications that can be made to the STI.
For the money, I received faster acceleration, smoother shifting, better high RPM stability, better throttle response, reduction of weight, improved gas mileage, and the Driveshaft is safer in case of failure.
What more could you ask for out of one easy-to-install modification?
I have been more than happy with the results and performance gains which I have encountered with this one-piece carbon fiber Driveshaft swap.

In the past, carbon fiber Driveshafts have been reserved to the extreme performance enthusiast.
But now for the STi, I think that all enthusiasts should look at the A.C.P.T. carbon fiber one-piece Driveshaft as a performance option.

More can be gained out of this simple Driveshaft swap, than off-the-shelf engine management or a turbo back-exhaust.


Michael Anthony

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Comments
  • Comment #1 (Posted by an unknown user)
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    Very good write up. Thanks
     
  • Comment #2 (Posted by an unknown user)
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    good stuff man.
     
  • Comment #3 (Posted by an unknown user)
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    Great write up, I am definately buying one of the as soon as I have the money. Thanks for saving me the painfull research of trying to find this almost "fable-like" part.
     
  • Comment #4 (Posted by an unknown user)
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    ACPT always strives to exceed customer's expectations. We had an advantage with the STi driveshaft development project because one of our employees (Driveshaft Product Manager) owns a 2005 STi and he was the guinea pig for development. He noticed the same performance gains you did, but also one more you didn't mention. The car stops (decelerates) much quicker when downshifting, perhaps anothe safety feature worth mentioning. Thanks for the good review!
     
  • Comment #5 (Posted by an unknown user)
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    I only wonder what the light ones would gain you also would the 500 dollar unit be the better trade off.
     
  • Comment #6 (Posted by an unknown user)
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    My STI eagerly recieved one of the first units and has yet to be damaged even with repeated abuse, Such as the dccd set 80 rear with 400 wheel horsepower
     
  • Comment #7 (Posted by an unknown user)
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    Are you still happy with this drive shaft And what modifications were done to your car before the installation
     
  • Comment #8 (Posted by an unknown user)
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    Excellent write up, i know where my next thousand bucks is going!


    -Zrex
     
  • Comment #9 (Posted by an unknown user)
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    Great review!
     
  • Comment #10 (Posted by an unknown user)
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    normally i wouldn't have read an article this long about a drive shaft buy you told a great story. kudos
     
  • Comment #11 (Posted by an unknown user)
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    Excellent write-up!! I want a C/F driveshaft now :)
     
  • Comment #12 (Posted by an unknown user)
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    must... resist... temptation... to... impulse... buy...
     
  • Comment #13 (Posted by bynddrvn)
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    Very interesting and informative article. Normally, I would not have thought about replacing the driveshaft as one of my modifications, but you make some great points. There is a lot of HP that is lost from the engine to the wheels and anything we can do to "put the power to the wheels" is a wicked awesome mod in my book.
     
  • Comment #14 (Posted by Dan)
    Rating
    I have actually recently purchased a composite shaft from CTG TORQline in the UK. I can quote that no modifications were required to the floorboard of the vehicle.

    The propshaft looks great and and can definately notice some performance increases, throttle response and decelleration seem much better.

    These guys are involved with many of the top end GT teams around the world. I reckon the part will whandle my mere 500bhp no problem!
     
  • Comment #15 (Posted by an unknown user)
    Rating
    Great write up, I always wondered if replacing the driveshaft would be worth it. Sounds like a lighter driveshaft is the way to go!
     
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