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PST Carbon Fiber Driveshaft - Subaru STI 2008-2014
PST Carbon Fiber Driveshaft - Subaru STI 2008-2014
PST Carbon Fiber Driveshaft - Subaru STI 2008-2014
PST Carbon Fiber Driveshaft - Subaru STI 2008-2014
PST Carbon Fiber Driveshaft - Subaru STI 2008-2014
PST Carbon Fiber Driveshaft - Subaru STI 2008-2014
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User Media for: PST Carbon Fiber Driveshaft - Subaru STI 2008-2014

PST Carbon Fiber Driveshaft

Subaru STI 2008-2014


Estimated to ship in 34 days
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Features & Product Details

RallySport Direct is proud to provide you with alternative driveshaft options brought to you by PST. 

On this page, you are looking at the PST Carbon Fiber Driveshaft for the 08-14 Subaru STI. This is a great way to help relieve some of the rotational mass of the drivetrain so that you can transfer more power to the wheels.


  • Made using strong, and lightweight carbon fiber materials
  • Smoother launches as carbon fiber will twist, absorbing much of the drivetrain shock instead of putting all the stress on the differentials
  • Improved throttle response, acceleration, and braking
  • Weighs just over 14lbs
  • Specifications

    Brand: PST
    Material: Carbon Fiber
    Weight: 14.4lbs
    Mfgr. Warranty: 1 Year
    Condition: New Product
    Return Policy:



    25 Reviews
    4.8 out of 5 Stars
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    Customer Photos and Videos
    PST Carbon Fiber Driveshaft ( Part Number: IZ611180)
    2 of 2 people found the following review helpful
    Must have upgrade 5 years ago
    4out of 5stars
    WRC fan
    For the weight savings alone, you need this carbon driveshaft on your STi! Significantly lighter than stock, and does away with the clunky joint and support bearing in the center of the two-piece steel stocker. Installation is quick and easy if you can lift the car high enough for clearance. Performance is improved a bit, but the gains are not huge of course. Acceleration feels better in 2nd, 3rd and 4th gears, and most of the 1st gear bucking in parking lots is gone. There is a slight hummm from under the car around 110mph, but not quite a vibration.
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    4 of 4 people found the following review helpful
    Driveshaft 5 years ago
    5out of 5stars
    Probably not the best performance/dollar ratio but damn does it smooth out the engagement in first gear. Takes away any low rpm jerking and the car seems to take off easier. Stock two piece is complete garbage compared to this CF one piece shaft. Only gripe about it is that doesn't have the protective cylinder that goes over the transmission and keeps away water/dirt etc.. Now it leaves the rear seal exposed to the elements and the metal couple millimeters from the seal is rusting. hopefully it doesn't go all the way to the seal. Would hate to see it get chewed up and require replacement..
    Was this review helpful?
    2 of 2 people found the following review helpful
    09 sti swap 6 years ago
    5out of 5stars
    Got this when I put a 12 sti trans and r180 in my 09 hatch. It's unbelievably light. I love it. Pulling out (haha) is effortless. No jazzing around like with a 2 piece. My only complaint so far is that the vibration is crazy! I marked the flange on the rear diff and in the driveshaft and rotated it 180 degrees. It's much better buttttttttttt still need to try the other 2 possible combinations. Highly recommend getting one. Just need to find the sweet spot for bolting it up to your rear.
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    2 of 2 people found the following review helpful
    For those who appreciates refinement. 6 years ago
    5out of 5stars
    This is a fantastic item, and I reckon it should be a standard item on WRX STI. It adds refinement to the driving experience because the slow speed jerk is reduced by a lot (it is still there, but much reduced) and it made me feel more relax driving the car at low speed because of the improved smoothness and responsiveness. When driving it fast, the most noticeable benefit is the improved throttle response after shifting up a gear. While it is normal to have a delay (turbo lag) between applying the throttle and when the car actually starts to picks up its pace again, its made worse due to STI being an all time AWD. With this driveshaft, the throttle pick up after a shift in gear is much better. The turbo lag is still there, but there is less burden for the engine from the drivetrain department. Oh, not to mention of how easy it is to install this item. I did not have to remove my Corsa Performance catback to install the driveshaft. Awesome.
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    6 of 7 people found the following review helpful
    PST shaft 7mos later 6 years ago
    5out of 5stars
    Kyle F.
    7-8k miles on it no issues. Once used to it you have to remind yourself how bad it was before you realize subaru 'shafted' us all w 2 piece steel(evo guys have it worse) along w no camber adjustment out back and weak pistons lol. 350z guys all get a factory CF shaft so dont think they are weak. Researched PST more after install and they do a more precise job balancing/setting yolks than DSS and also use stronger solid, non-greasable maintenance free U joints like OEM(DSS uses weaker greasable) and PST uses >45 deg winding angle on its larger diameter CF shaft than DSS weaker 45deg winding on smaller diameter shaft. DSS is cuter in pics though especially the logo n stuff lol. If you car is pushing 6-900hp you need safety margin w strength and PST seems tougher for the extra 1lb on each end. NO clearance issues w heatsheilds or need to drill bolts to bigger 10mm (DSS uses the bigger bolt excuse to rate it for higher hp pointless on a sub 600hp car 95% of us have) on a lower power daily I think DSS is a gokd choice also if you want to pencil in 'grease ujoints' on your maintenance schedule and get 2 mor lbs off the rotational. But ask yourself is it worth it and are you running lightest wheels and rotors also? If not you may want to consider PST's common sense strengths.
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    • Q: hp & Speed  Vgta2 years ago

      Hi, how much hp & speed max this driveshaft is rated?
      • 1 of 1 people found the following answer helpful

        A:  PST does not post ratings on their driveshaft, that being said, how much power are you making and how fast do you intend to drive? This driveshaft will hold up fine to high horsepower of ~850 hp.

        Lane H. @ RallySport Direct 2 years ago  
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      • 0 of 0 people found the following answer helpful

        A:  I have 700hp, with 188mph!

        Vgta @
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    • Q: A-Line fitment  toxa 6663 years ago

      Will this one fit STI A-Line, the one with 5eat? (So that I can install it on my FXT, lol)
    • Q: Pst carbon fiber prop shaft  BionicBarry2 3 years ago

      Being a 1 piece design, will this prop shaft interfere with factory routed exhaust?
      • 1 of 1 people found the following answer helpful

        A:  There should be no issue with the factory exhaust. If yours is older and sagging, new exhaust hangers may be needed though.

        Travis D. @ RallySport Direct
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    • Q: Limits  StiJamesD3 years ago

      What are the limits to this driveline? Other company’s told us the rating for the driveline is. Example DSS says don’t have over 850whp and don’t exceed 180. Thank you.
      • 1 of 1 people found the following answer helpful

        A:  It's about the same. This does not have a specific "limit" as I don't think you're ever going to break it with power or speed, but generally I would advise you to keep any Subaru under 200MPH for everyone safety lol. But with that said we do have people running well over 850WPH on carbon shafts without issue, but I don't think any of them dare hit over 180 MPH for more than a brief period. Hope this helps.

        Rick C. @ RallySport Direct 3 years ago  
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    • Q: PST CF Driveshaft can be fitted to 2006 Sti?  Jef4 years ago

      Good day, I have purchased a 2009 Sti PST CF Driveshaft from Rallysportdirect, good stuff. But may I know can it be fitted to a 2006 Sti? Thank you.
      • 0 of 0 people found the following answer helpful

        A:  The 2009 STI driveshaft with not fit the 2006.

        Michael N.
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