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Kartboy Aluminum Crank Pulley Most - Subaru Models (inc. 2002-2014 WRX / 2004+ STI)

MODEL # KAR KB-050
Manufacturer Part # KB-050

$85.00

MSRP: $100.00

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Description

One of the benefits of a Subaru boxer engine is that they respond well to lightweight crank pulleys. Kartboy’s crank pulley is a great option for you WRX/STI owners. Think of it as having a lightweight flywheel, you’re going to reduce the rotational mass and strain on the engine. 



Please note on the confirmed applications list that these will also work on several other Subaru models. Make sure you have your car entered in the year, make, and model function.



The Kartboy aluminum crank pulley is black in finish, and weighs in at 2.38lbs. 

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RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.

Specifications


Brand: Kartboy
Color: Black
Location: Crank
Material: Aluminum
Pulley Ratio: Stock
Weight: 2.38lbs

Mfgr. Warranty: Limited Lifetime Warranty
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
RallySport Guarantee

4

5 STAR
75%
4 STAR
3 STAR
2 STAR
1 STAR
25%
This product has no user uploaded media. You can upload your photo or video of your install by posting a review.
RallySportDirect.com Reviews:

Noticeable Difference
Michael N. 1 year ago
I installed this on my car after I had to replace the timing belt. With my car being a 4EAT there was a noticeable difference after it was installed. I experienced no issues with idle. I would recommend this to be installed. It is an easy mod to do.
Comment

Don't do this unless you get it balanced with the crankshaft...
Père Foura 2 years ago
Install this, first of all I notice no power gain, the idle was not stable and the engine was vibrating. I would not recommand that product unless you fully built your engine and get it balanced with the crankshaft.
Comment
Verified Purchase

REV FASTER
JDM-STI 5 years ago
First, im a bit skeptical in putting underweight crank pulley for my EJ207. After talking to Rick, Im convinced it will not do harm to my engine. After installation, damn i like this crank pulley. The engine rev more faster now and its good to know that this crank pulley is not as light as other aftermarket one that might cause the CEL light due to lighter weight. LOVE THIS MOD!!!
Comment
Verified Purchase

Crank Pulley
vwbeaner 6 years ago
I had this put on when I had my timing belt done. The motor seems to rev up faster and easier. Probably the easiest and cheapest way to make the car a little faster Would you recommend this to a friend: Yes
Comment

  • Q: Installation  eplumpro 2 months ago

    Answer

    Is there a tool to install this pulley? I know there is a tool to remove/install an OEM based pulley, but what about this one? How would I go about installing it without spinning the engine?


    • A: You would either need the Grimmspeed crank pulley tool or Company 23.


      Tyler A. 2 months ago
  • Q: CEL with WRX flywheel and this pulley?  Robot Doctor 3 years ago

    Answer

    I have a 2008 Legacy GT, and am going to be installing the Competition Clutch Stage 2 Steelback Brass Plus Clutch Kit w/ Flywheel Subaru Models (inc. 2006-2014 WRX / 2005-2009 Legacy GT) I also am doing the timing belt, the Tomei downpipe, Invidia catback and Cobb Access Port at the same time. Will the combination of the Kartboy pulley and the lighter WRX flywheel cause CELs? Thanks!


    • A: You shouldn't see any CEL, however with the combination of the lightweight flywheel we can't guarantee it.


      Kyle A. 3 years ago
  • Q: Rad Pull  ccracing_3438958 3 years ago

    Answer

    Will I have to pull out the radiator to install this?


    • A: You should not have to remove your radiator for installation.


      Kyle A. 3 years ago
  • Q: Tune?  justinpozzolo53115 5 years ago

    Answer

    Can this just be a bolt on or do I need a tune do to faster revs?


    • A: Lightweight crank pulleys do not require a tune and you can just bolt this on and be good to go.


      Zach G. 5 years ago
  • Q: Weight  Subiesuperlover 5 years ago

    Answer

    May I know the actual weight of this product, and do they (cobb, grimspeed, this one) weight the same?


    • A: These are estimated weights from our scale, the weights might show slightly different on another scale. Stock - 5.56LBS Kartboy - 2.36LBS GrimmSpeed - 2.02LBS Cobb - 1.24LBS


      Tanner S. 5 years ago
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