Kartboy 1-Pot to 2-Pot adapter brakets

Got a new part? Is it the best thing you've ever seen? Is it a complete ripoff? Let us know about your parts and service.

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First Gear
Posts: 85
Joined: Sat Jan 12, 2013 5:20 am

Kartboy 1-Pot to 2-Pot adapter brakets

Post by Ghost »


ahem... My 4 hour brake upgrade turned into 12+ because of these things.

So what's the deal? You get the standard kartboy packaging. Lame sticker with l337 speak, cheap looking internal wrenching bolts and the brackets.

The brackets themselves look like nicely machined pieces. They are machined to tight tolerances. When you (finally) bolt them onto the car they are something to appreciate. Its a convoluted little space they are shaped to fill.

Enough with the sunshine. The problem I had is that these precision brackets with their tight tolerances are machined to higher tolerances than Subaru. Their bottom side profile that mates up with the spindle did not exactly match my car. This caused the bolt holes to be out of alignment. I tried grinding my upright but it became obvious I was going to have to remove too much material so I elongated the holes (really lame solution).

What further exacerbates this problem is that the brackets are made out of aluminium. And the two holes in question are threaded aluminium. Kartboy opted not to helicoil these threads, which means they are instantly destroyed by cross threading, and when holes don't line up guess what you are prone to.

-------------------------BOTTOM LINE---------------------------

For the price Kartboy asks, these should fit perfectly out of the box. For the amount these things are hyped as a bolt on solution I was disappointed on how much effort it took to make them fit. Buyer beware, these may or may not work for you.
First Gear
Posts: 220
Joined: Sat Sep 19, 2009 6:21 am
Location: Orem, UT

Re: Kartboy 1-Pot to 2-Pot adapter brakets

Post by martimus919 »

I'm currently making brackets that will be a lot more affordable than the Kartboys and the install will be much easier as well.

Thanks for the review!
07 Outback XT VF52
94 Legacy Sport, VF23, 550 RobTune, various other things
93 Legacy Touring Wagon EJ205 management and dash swap (in progress)
90 Loyale Turbo, EJ Turbo Swap, 2" lift
82 Brat, EJ22 swap, RX AWD trans w/ LSD rear, 5 lug 4 wheel disc.
Third Gear
Posts: 787
Joined: Wed Aug 22, 2007 9:27 pm
Location: Denver, CO

Re: Kartboy 1-Pot to 2-Pot adapter brakets

Post by macipusy »

Yes, the custom fitment that everyone has to go thru....SUCKS!! If you drop 2 bills on brackets, they should fit like a glove.

I ended up grinding down the hub on my RS to fit the brackets.
maciek puszynski

01 Impreza | v6 STi RA | 5mt | ej236t
93 Legacy Turbo | TW | 4eat | ej22t
16 WRX | 6mt | fa20
98 Legacy GT | wagon | 5mt | ej25d

2.36L Turbo - RSTi Build
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