PROJECT RZR XP 4 TURBO DYNAMIX
— Common-sense mods from TUSK —
By the staff of Dirt Wheels, photos by Pat Carrigan
Our 2018 Polaris RZR XP 4 Turbo Dynamix is the upper end of the price range for the Polaris range. We have around 500 hard miles on the Dynamix at this point, with 200 of those miles being in the sand dunes. So far, the machine has been pretty wonderful. As we live with the Dynamix computerized suspension, the more we appreciate it. When it was new, it was great in the dunes, but with many miles on it now, it is working extremely well in the rocks too. We’ve been hitting some long desert rides where we ended up many miles from the truck, so we were looking to make some common-sense mods.
We didn’t want to break the bank, but we did want to protect the machine and our ability to get back to the truck. So far our preparations were limited to a tool bag from Home Depot equipped with tools we hoped would handle small repairs on the trail. When we cut a sidewall, we were fortunate to have a spare wheel tied down in the bed. A Tusk $27.99 scissor jack and a Tusk three-way lug wrench ($9.99) had us back on the trail in minutes.
LET THE WRENCHING BEGIN
That flat was a wake-up call, so we called Tusk for a spare-tire carrier. It literally mounts in seconds to the standard cage. The instructions call for it to be mounted above the shock reservoir brackets, but the Dynamix doesn’t have them, so we were able to get the unit mounted a little lower. Tusk sells a spare-tire combo kit that also mounts the scissor jack, and they have a separate jack-cage mount, but we simply carry the jack in our tool bag in the bed.
Next up was trying to make sure that we didn’t have flats. We chose 30×10-14 eight-ply Tusk Terrabite tires. These are long-wearing desert tires with a DOT rating. We have had good success with them before, but we upped the survivor factor by adding Tusk’s new Teton beadlock wheels. The wheels are a bargain for beadlocks, and you can have them delivered with your tires already mounted. The Terrabite/Teton combo weighs 53 pounds. That is a very reasonable weight for a beadlock wheel and an eight-ply 30-inch tire.
Teton wheels have more offset than the stock wheels, so the car is widened from 64 inches to almost 69 inches. The car certainly feels planted on cambers now, but it still fits easily on our trailer. We have run the wheels and tires in the dunes and the desert, and the performance has been extremely satisfying, and so far no problems at all. Stock lug nuts will not fit the Teton wheels. We used a lug nut with a 17mm head, but even smaller spline-drive lug nuts would have been better.
An open cab is great for visibility but isn’t optimum for comfort. Tusk’s UTV Force aluminum roof has a good price, comes in black powdercoat and installs in minutes. It comes with weatherstripping to stick to the cage tubes, but the roof doesn’t actually touch much of the roof, so we left it off. There is some harmonic vibration, so we will go back and add the rubber stripping. It is great having the added heat, weather and cab-intrusion protection.
Our staff who wear glasses like open-face helmets for casual driving, so we decided to try a Tusk hard-coated, vented polycarbonate full windshield. The weather protection is great, and the view is free of any distortion. Dust is attracted to it, though. So far wiping it hasn’t affected the surface, and when the weather is cold, it is more than worth the trouble. We will be experimenting with some static treatments to see if we can fix the dust problem. We tried some wipes for electronics that we carry in the glove box; they helped, but didn’t fix the problem. Tusk sells a full glass windshield for $110 more.
We feel far more comfortable and secure in the Dynamix now. We have all that we need to change a flat tire, and beadlock rims so we can drive on a flat if we must. When it is hot, the windshield removes with four bolts and the mounts stay in place. The wider track is a plus, and the car looks good as well. By sticking with Tusk products, we kept the overall tab reasonable but still got quality products and free shipping. Now, we just need to get more miles on it searching out more adventures.
PARTS AND SUPPLIERS LIST
Tusk: www.rockymountainatv.com Polaris RZR vented hard-coated poly carb front windshield $269
Teton bead lock wheel $104.99 ea.
Terrabite 30×10-14 tires $139.50 ea.
UTV Force aluminum roof $399.95
Spare-tire carrier $149.95
Two-ton scissors jack $27.99
Three-way lug wrench $9.99