Extreme Kartz Avis 

Knowledgable & friendly staff. Professional & good communication from pre-order questions - ordering process - delivery thru install questions.

⭐ 1-Star Review
I purchased the Madjax Ultimate Light Kit from ExtremeKartz just three years ago. Recently, the plastic brake sensor broke, and when I reached out to ExtremeKartz, their only solution was for me to buy an entirely new Madjax light kit for $548.

This is extremely disappointing. A minor component failure — something that should be easy and inexpensive to replace — should not require replacing the entire system. If Madjax products are built this way and ExtremeKartz stands behind that approach, it says a lot about the poor product design and lack of customer support.

I would not recommend buying from ExtremeKartz if this is how they handle product issues. Poor quality, no reasonable replacement options, and zero accountability. Extremely dissatisfied.

Left a message received call back same afternoon, extremely helpful, professional solved my problem in minutes. Great people

Company failed to provide purchased product. Do not purchase through these guys.

What a great experience. Jordan and Devin were fantastic. Extremely knowledgeable and helpful. Most importantly, you answer the phone. I find it rare to not only be able to talk to a person, having helpful and knowledgeable people on the other end of the phone is rare. Great company with great people.

On February 23rd, 2025, I ordered a golf cart windshield (#: 90999) on their website. It was shipped via FedEx and a few days later, I received a message from FedEx stating it was delivered. When I got home that evening, there was no signs of a large box being delivered. I checked my order with FedEx and the picture message from FedEx showed the box in the back of a delivery truck with a message stating, "Your package was delivered." I called FedEx to dispute the delivery and after not getting help from them, I contacted Extreme Kartz and informed them of the missing delivery. Even though it was not on their company, Extreme Kartz was very pleasant to work with and sent me another new windshield right away. The customer service and professionalism was above the rest and what anyone would want in working with a business when purchasing products. I will get all my golf cart parts and accessories from Extreme Kartz and no where else from here on out. Thank you!

I ordered a lithium professional kit and also a light kit for my ezgo. There was one part missing but after contacting customer service they explained that is was complete based on my cart. the light kit was also not working and the same customer service agent helped me get a new kits shipped out. they do call backs right away and very responses via email.

What makes Extreme Kartz the go-to for me? Service above everyrhing else. Service over a HUGE selection of golf cart products. Service over an incredible depth of knowledge of all things golf cart related. I've called a dozen times, and each time they answer with enthusiasm. They've sent me to online resources, and they regularly look up parts for my hard-to-find cart. Doesn't matter if you're sporting an EZGO, a Yamaha, a Club Car, or any other golf cart, they can find the parts you need!

I’ve dealt with several part vendors over the years, but Extreme Kartz is still the best. I usually request Ryan, but I’ve never had a bad experience with any of their team members. Ryan is very knowledgable and goes above and beyond to ensure their customers needs are met. If you’re in need of parts or accessories, I highly recomend Extreme Kartz!

Best pricing on the product and fast shipping. I received my package 3 days after ordering. Will be buying from them again!

• We did two 2019 Polaris Ranger conversion to lithium. Installed 2 eco skinny 48v 105 ah on each Ranger. Must order an additional battery support frame and battery mounting bracket kit for the 2nd battery.
• We got 15 am charger instead of 20 amp which normally comes with the Ranger kit but we’re out of stock at time of our orders. 15 amp charger will take incrementally longer to charge.
• Make sure when removing the 4 long battery hold-down bolts on the long factory battery bracket that threaded ends don’t break in the holes. Re-tap holes ( M8x1.25 tap) if necessary as you will be using these 4 treaded holes.
• Download eco instructions guide and parallel batteries wiring to use for the installation
• Don’t need 48v converter since Ranger has its own.
• Clean and paint metal trays.
• The factory plastic trays are not reused.
• We ordered from Amazon 8x1.25 16mm long SS bolts for tray re-installation and
2g welding wire and 2g lugs with 5/16” hole for parallel connection of the 2 batteries.
• Make 2 battery 2g cables 24” long each for the parallel connections.
• Note batteries have recessed lower support lips at the bottom that you’ll use the kit mounting brackets to secure battery
• Take picture of battery serial no for warranty registration. Verify serial numbers when activating the Bluetooth set up.
• Install both battery supports from the kit on each side of the vehicle, install self tapping screws with impact drill. Be careful not to impact hard to shear screws (go part of way with impact, then tighten with a 5/16” socket and ratchet).
• Pre drill 15amp charger holes on vertical plate (110 volt cord facing bottom) which has different hole spacing than 20 amp charger
• Install charger plate temporarily with only 2 bolts and install 2 self tapping screws with impact drill, mark location of this plate exactly to get exact alignment of self tapping screws when reinstalled later
• Remove charger plate to make battery installation easier.
• The main negative cable to controller is long enough to connect to right battery (passenger side). Need to carefully remove the positive main cable from factory solenoid and reinstall to come from top of solenoid to have enough length to go to positive terminal on left battery
• Shrink tube and tape 4g cable lug and zip tie to 1g main cable which is factory installed in the main cable lug on both main positive and -negative cables.
• Wire brush clean both main 1g cable lugs
• Install batteries. Use short piece of 2x8 on edge of Ranger frame to support heavy battery as you slide in
• Position each battery and line up lower lip holes with support holes.
• Install provided 5/16” battery support bolts. Supplied nuts which are in the kit are hard to start and tighten on battery support bolts under battery frame. We used long nose pliers to hold the nut to start them on the bolt. These nuts are for extra measure but not really needed.
• Kept factory gauge intact to keep run hours indication on the Ranger. Added new gauge above key switch location. Plug in both connectors on back of the gauge and run the wire to right battery area on right side of drive shaft. Secure with zip ties away from drive shaft.
• Install charger plate and battery charger with 110 v wire plug at bottom.
• Install provided charger port on the right-side panel where the dummy existing capped hole with provided 4 small bolts/nuts.
• Install positive and negative main cables, positive and negative parallel cables and charger cables using battery 8x1.25 bolts found in bottom of battery packing. Stack lugs big to small. Use ECO installation guide for battery parallel wiring.
• Connect 5 pin communication cable to right battery, connect remaining gauge and charger cables connectors per ECO installation instructions.
• Double check all wiring and zip tie for clear, rattle free and safe installation.
• Bypass factory charger per instructions using a blue female spade connector pressed to fit tightly on the 2 pins on factory charging plug for jumper.
• Turn both batteries on and verify green switch light is on. Gauge lights up and show state of charge.
• Reinstall all panels. Do a quick test drive. Plug charger to fully charge batteries to 100%.
• Download eco app and check for Bluetooth operation and verify batteries serial number for warranty registration.
• Register batteries on ECO website. Eco Batteries support phone number is 877 326 2288.They are very helpful.
• Ryan Hart at Xtreme Kartz was very helpful in clarifying and answering questions and taking our orders.
Ronnie

I've been using ExtremeKartz for the past two months for upgrading my 2014 Club Car Villager LSV and they have been absolutely incredible. My golf cart is somewhat unique, and it has been challenging to find aftermarket parts that are compatible. Both Sales and Customer Support have been extremely helpful in helping me identify the necessary parts that will work with my Club Car. My favorite purchase so far is my new Lazy Life seats. They look amazing and they installed perfectly. Thank you to the ExtremeKartZ team for all your help!!!

Devin went the extra mile to make a time sensitive repair happen on time. For his interest in my project I am truly grateful. Parts are parts but PEOPLE make the difference in customer experience.

It was a good experience they were very helpful and everything arrived in good shape and also a great price.My cart has a lot more power and speed 26 MPH. Thanks again Dan

Was helpful, friendly with question before the purchase of RHOX Road Hawk, 23x10R14 Radial DOT, 4 Ply. Tires arrived in a timely manner.

Every transaction I've had with Extreme Kartz has been fast, efficient, and exactly as they say it will be with the product I've ordered. You really can't go wrong dealing with EK for your cart needs.

I ordered the wrong part for my cart on Saturday and called on Monday morning to cancel it. I spoke with Ryan who got my order cancelled and refunded in less that 10 minutes. Ryan was very polite and extremely helpful. I used to order from buggies unlimited. These guys at Extreme Kartz have my business from now on.

Outstanding service fro sales engineers from helping with choices to logistics. Highly responsive and effective.

Ordered a chair holder for my cart - it was there in 3 days. Price was great and now I am toting my chairs to the beach.