MasterCraft PiggyBack Rear Factory Ballast Upgrade

MasterCraft PiggyBack Rear Factory Ballast Upgrade


In stock Ships tomorrow

*Discount codes do not apply to this item.


Warranty 1 Year
Manufacturer WakeMAKERS - view brand page
Manufacturer Part # 42301
Item # 42301


Expand the capacity of your MasterCraft's factory ballast system for a better wakeboard or wakesurf wake.


The Rear PiggyBack Ballast System Kit is designed to make use of the existing pumps, hoses and switches in your Mastercraft, to expand the capacity of your factory rear ballast tanks. This kit includes everything needed for the installation. Follow the year, make and model filter for your options.

NOTE: Any 2007 MasterCraft will require the installation of a new Jabsco AI Timer Module due to the inability for the timers to be increased above 6 minutes. All 2008-2011 MasterCraft boats will require timer reprogramming to increase the fill and drain times and can be increased to a maximum of 20 minutes, Download Instructions.

Mastercraft Piggyback

One simple and completely reversible change is required to install the PiggyBack system, and the entire process takes less than 30 minutes.

For specific questions on fitment, and for possible compatibility with other models, please contact us.

Step 1: Loosen the hose clamps on the vent hose located on top of the hard tank and remove the hose. Try to unthread the barb vent fitting in the top of the hard tank. If this is removable use the 1” NPT fitting in it’s place.

NOTE: If the fitting is not removable use a short section of the black MasterCraft OEM hose and the gray 1” thread x 1” quick connect fitting between the hose extension and the tank barb.

Step 2: Connect the quick connect elbow fitting that is closest to the black 1 PSI check valve onto the ballast tank fitting seen above. Slide the red collar down to secure the connection.

Step 3: Loosen the clamp securing the hose to the thru-hull in the side of the boat and remove the hose.

Step 4: Using the pre fabricated kit place the hose that is not labeled onto the vent thru-hull fitting in the side of the boat. Secure with a hose clamp.

Step 5: Thread the male quick connect fittings into your MasterCraft Ballast bag.

Step 6: Connect the straight hose fitting, labeled Fill/Drain, onto the bottom bag fitting. Slide the red collar down to secure the connection.

Step 7: Connect the elbow hose fitting, labeled Vent/Overflow, onto the top bag fitting. Slide the red collar down to secure the connection.

Step 8: Locate the unlabeled, unterminated bare hose end and slide that onto the vent thru-hull fitting located on the side of the boat. Secure with a hose clamp.

This Piggyback system is designed to work with MasterCraft boats that have factory rear ballast tanks that are installed below the floor of the boat and use 1" hose connected to Jabsco Ballast Puppy pumps for filling and draining.

Confirmed models include the following boats:
- 2006-2011 MasterCraft X-2
- 2006-2011 MasterCraft X-10
- 2009-2011 MasterCraft X-14V
- 2006-2011 MasterCraft X-15
- 2010-2011 MasterCraft X-25
- 2006-2010 MasterCraft X-30
- 2008-2011 MasterCraft X-35
- 2006-2011 MasterCraft X-45
- 2009-2011 MasterCraft X-55
- 2006-2011 MasterCraft X-80
- 2012 NOT COMPATIBLE (Ballast Software Upgrade Available Early 2013)
- 2013 MasterCraft X-2
- 2013 MasterCraft X-10
- 2013 MasterCraft X-14V
- 2013 MasterCraft X-15
- 2013 MasterCraft X-25
- 2013 MasterCraft X-30
- 2013 MasterCraft X-35
- 2013 MasterCraft X-45
- 2013 MasterCraft X

ATTENTION: This factory ballast upgrade kit is sold individually. We sell systems individually so that customers can upgrade just one side of the boat for surfing if they would like. You will need to purchase two systems if you want additional ballast on both sides of the boat for wakeboarding or surfing regular and goofy. Contact us if you have any questions or need help determining the correct upgrade for your application.
Write a Review and Enter to Win $50*

You must be logged in to submit product reviews. If you already have a customer account, log in.
Otherwise, you will need to Create an Account.

  • 7/16/2015
    Ken marzec

    Very easy to install. Saved the install money I would have payed the dealer and added extra bags to the bow and side. Love not having to move around the portable pumps. Sit back and relax.

  • 6/22/2015
    Huge change to the wake on X30
    Ron DeVries

    I installed on port side of 2013 X30. Big change to the wake. Platform hits the water now when surfing so need to get about 150 pounds in the bow which makes the wake even better. Use a person or more water ballast up front. It took me only 30 minutes to set up once I understood the parts - it would be helpful if they included a diagram. A call to wakemakers resolved everything quickly but a diagram would be nice to have a greater sense of comfort on the install. I had to add a splice piece of hose since couldn't get the fitting out of the hard tank. No big deal - but it meant I needed another hose clamp two (3 total - used 2 existing when removed the vent line to insert the sack). I read this somewhere but forgot - when you adjust the timers (which on mine can EASILY be done on the computer screen) set them for about triple the fill and drain times. When you start the fill, start a stop watch on your phone - when the water starts dumping out the vent on the side of the boat, read the stopwatch time and then reset the timer to that time frame. I'm not sure the 750 pound sac would fit in this locker - the 600 seems "right".

  • 1/11/2015
    easy install!
    Shelly Morden

    Easy to install. Simple instructions. Took 30 minutes tops!! Needs longer drain tubes though.

  • 9/2/2014
    fat sack

    I have 2006 X-45. I installed a fat sac on each side. I had to pick up longer drain tubes to accommodate for the extra length to reach the sac. Install took about an hour and is simple. It fills perfectly but fills slowly as it runs off the boat pump. The 750 lb sac fits perfect.

  • 8/4/2014
    Absolute Must Have

    We have a 2010 Mastercraft X-25 with the factory ballast and while it was enjoyable, it just seemed like something was missing while surfing. Added the Piggy Back system in both rear lockers with the Fly High 400 pound bags.

    Installation took about 45 minutes for both sides. Like some others, I also used a few more extra feet of hose, so you might consider some extra just to have 'in case'.

    Once filled, our swim platform is now 4 inches under water, whereas before it was out of the water. The wake is night and day difference for both surfing and wakeboarding !!! WakeMakers nailed this.

  • 7/11/2014
    What a breeze!

    Installed on a 2007 X30 and it took less than 10 minutes to drop in and adjust all the fittings. Did need to use a heat gun to apply a splice to the overflow line. Other than that it was awesome. Made a ton of difference in my surf wake compared to the 455lb bag that was installed by the previous owner.

  • 6/18/2014
    AWESOME Wake!

    The install took about one and half hours to complete for both rear piggyback kits. Very simple, especially coming from a not so handy man. I had a hard time getting the valves loose from my hard tank so I could put in the new ones from wake makers. Otherwise very simple and great set up. Our wake is awesome, THANKS Wakemakers for the easy kit and install!!!

  • 5/12/2014
    Ecellent Service!

    I just got back from my Honeymoon and the boat comes out of storage today! Haven't used the ballast yet but the customer service and quick shipping was by far the best I've seen in a long time (and I order online a lot). I will be a repeat customer!

  • 7/29/2013
    With exactly all the parts you need, it made for an Easy Install!!

    We added 750lb piggyback sacs to each rear locker on a 2013 X-30. The install took around 20 minutes per side. Tremendous difference on the surf wake.

  • 1/14/2013
    Create Amazing Wakesurf Waves Behind Your 2009 MasterCraft X-45

    I bought this kit for my MC X45 for surfing and all I can say is that i am impressed. The install was very easy. It only took me about 20 minutes per side. I went with the Fly High Jumbo Surf Sacs (1100lbs.) to get the most out of my lockers. We had more height in the locker and wanted the sacs to fill to the top. In hindsight the Fly High Fat Sacs (750lbs.) would fit better but you can't go wrong with the bigger bags.

    We just installed the rear sacs first and quickly realized we needed the front sacs too. Once the front sacs were installed it brought the bow down and created a nice long surf wake.

  • 9/20/2011
    Great product

    Just installed the piggyback system in the rear storage locker for my 2006 X45. It is now throwing off a huge wake that even a novice can surf without a rope.

  • 5/22/2011
    Easy and Straight Forward

    Did this upgrade on my 08 X-45. Agree with previous review that you need additional tubing for overflow. However, plenty is provided with kit so no need to purchase more.

    Very straight forward instructions. Takes about 30 minutes. Used a dryer to heat tubing up to get fittings into tube.

    Reprogrammed the pumps and the sacs fill/empty with ease now! Great Upgrade!

  • 4/14/2011
    Easy, good advice from WakeMakers
    MC Matt

    I have a 2009 Mastercraft X-30 and installed the Fat sac piggyback gear on my boat. Everything was pretty straightforward, I did seem to need about another 6 inchs of tubing for the overflow but I think that is because I have a custom cage in the back lockers.

    I had questions about doing this to my( BABY) but one quick call and everything was answered. These guys know what there talking about. No more throwing the tsunami pump over the side for me.