MACSBOOST 12X Stage 2 Plus Kit

(4 customer reviews)

Original price was: $2,449.00.Current price is: $1,999.00.

The ultimate MACSBOOST performance combo kit for your 12X Honda Aquatrax Turbocharged personal watercraft.

In stock (can be backordered)


The ultimate performance combo for your 12X Honda Aquatrax Turbocharged personal watercraft.  Everything you need to take it to the next level! The plus kit adds the incredible Velocity stack intake over the standard stage 2 kit.


MACSBOOST Intercooler and boost tuning kit
MACSBOOST 17/29 Impeller
Macsboost Honda Aquatrax Velocity Stack Kit
Crankcase Breather

Adds approximately 45Hp over stock on 93 octane.  Huge increases in acceleration and top end.  Up to 50+hp possible with 98 octane.

We have many customers over 500 hours.  This kit maximizes reliability and performance.

Instructions for intercooler

Direct Android app download link (.apk file)

Additional information

Weight 24 lbs

4 reviews for MACSBOOST 12X Stage 2 Plus Kit

  1. Steven Marimberga

    This is the stage kit you want for your Honda. Go ahead and spend the money for the entire kit. This took my stock 2007 F12x to 66mph with awesome take off. I would spend the money again in a heartbeat. I now leave an R12x at take off and the R12x can not catch up. No, you will not outrun an 1800cc ski, but you are not going to use as much fuel either. You will be able to keep up with the newer 1800cc skis that are not modified. I have been very pleased, 3 years running the kit and no reliability issues.

  2. Jim Hawkins

    I bought the stage 2 with the 3degree wedge. Sent turbo to have polished compression side. Added header 19 psi tube, 97 octane 15/22 solas impeller. This ski not only run with the 1800 cc yamahas. From 10 mph on this ski will reach 74mph with a 205 lbs driver. Not bad for my little 2004 R12x with 200 hours. These speeds r gps!! U will notice a huge drop in turbo lag and great mid and top speed.

  3. Jack McAdams (verified owner)

    The stock 12x ski is a blast to ride! But this puts it on a whole new level. Its insanely fast now. Im running 100 octane & 19psi and it freakin’ rips! And this kit is absolutely flawless. Everything went together as it should & pretty much all bolt on & plug & play, Mr McAlpine is SO helpful with any questions or worries!!! The go to for Honda PWC!!!

  4. neatjd (verified owner)

    The Stage 2 Plus kit and 3 degree wedge is the only way to go! A literal direct fit kit took me approximately 4 hours to install on my 05 R12X. Shipping was fast, packaging was adequate and protective, and the results are indescribable.
    Currently running 17.5 psi on 93 octane and she absolutely screams! Hole shot is amazing, mid range pulls strong, and top end has me running 70+ mph with the big boys.
    If you’re planning a purchase with Macsboost, go all the way, you’ll be glad you did.

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