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Ross Pilgreen’s King of the Hammers RZR

Ross Pilgreen's King of the Hammers RZR

By Ross Pilgreen

Me and my co-driver, good friend, Heath Day raced a couple Ultra4 races in 2015 and 2016 along with King of the Hammers in 2016 with my old portal car. That car was a proof of concept and trail rig we turned into a makeshift race rig. We won both Ultra4 races we entered the car in and came in 11th place at King of the Hammers 2016 after fuel issues.

Ross Pilgreen's Portal RZR

SuperATV Portal Lift give this RZR gobs of ground clearance.

It was on our trip home from King of the Hammers 2016 that we decided we needed to build a new car so we planned out what we wanted to build on the long drive home. Life gets in the way sometimes. Fast forward to July 2017 I was finally in a position to build my dream rig. I designed this rig to race Ultra4 so it needed to be good at desert, short course, woods, rock crawling, and anything else you can think up.

Ross Pilgreens portal RZR

Stretched Wheelbase give this custom RZR an advantage in desert and on big drop-offs like Backdoor

SuperATV is a huge supporter of mine and I designed this rig around the portals that I have been testing and working on them with since 2015. The geometry is entirely custom and loosely based around trophy and Pro 4 trucks. Safety, comfort, and durability were key. Steering and handling were paramount to this build, I can confidently say it works better than we hoped. My steering setup on this build is top of the line and we don’t have to worry about any failures that are common with UTVs.

Ross Pilgreen's King of the Hammers RZR

Good view of the front of Ross’ RZR

The combination on my accessory drive setup running a Howe hydraulic pump to power a Fortin 2.5″ billet rack is truly full size steering. The tie rods are 1.5″ 7075 aluminum with 7/8×3/4 heims for reference, that’s the same as what most builders use on the front of their trailing arms.

I have over 500 miles on the new car now and the performance is incredible. We not only pre-ran most all of the 2018 King of the Hammers course, we also raced it and came in 10th! With a finish rate at 10%, we couldn’t be more pleased to get the finish. After I get the clutch work dialed in where I can truly push the car I feel we will be a force to be reckoned with at not only the Ultra4 races but also a couple other series we will be attending.

2018 year is going to be a blast, if you see us at the races or riding come say hello, check it out. I can’t think all of my sponsors, family, and friends enough for the help and support but mainly my wife for putting up with all this nonsense. 

NSR custom portal based chassis 108” wheelbase
Ross Pilgreen and Heath Day
Main Chassis
1.75” x .120 DOM
All aluminum panels and custom dash
NSR long travel portal suspension 18” of front travel and 20” of rear travel With custom SuperATV radius and tierods. NSR Knuckles. All designed in conjunction with SuperATV Gen2 Portal Gear Lift.
Fortin 2.5” 1.5:1 billet powered rack with Howe TC pump driven Through NSR accessory drive system. Netting 40 degrees of steering.
FOX Shocks Factory Series Internal ByPass (IBP) 2.5 Front & FOX Shocks IBP 3.0 Rear
Tuned by Wayne at Alltech.
Super ATV Rhino 2.0
Factory RZR Turbo Engine w/ REV1 tuning
RZR turbo regeared
Front Diff
DC motorsports Stage 3 prototype
Stock Clutches with custom weights, springs, and Helix
Custom Magnaflow
Factory rzr turbo airbox with custom in cab Prefilter setup
15″ Raceline Double beadlocks
35” BFGoodrich KR2 baja class 10 tires
Baston signs in Arkadelphia, AR
Super ATV
PRP 6.3×2 harnesses and RJS window nets
Fire Protection
Off road solutions quick release mounts
RZR turbo with custom brake pedal
Rugged Radios 360 intercom with Vertex 2200 50W Race Radio
Dash Display
Ride command 7” display with reverse camera, Glowshift oil and fuel guages, and razorback belt temp guage
Fuel Cell
22 Gallon Fuelsafe custom cell with dual systems and dual hydromats.
CBR Performance Radiator + Intercooler with Dual 12” brushless Fans and heat exchanger Oil Cooler in Radiator.
Battery/ charging System
Oddessey 34/78 series in a Ruffstuff box
Dynamix 900w stator with dual 65amp regulators
Blue fire 6” SR front
90w side shooters on A pillars
RLB chase light bar
Infinite offroad 3w red rock lights
SuperATV 5000lb winch

SuperATV spare axle mounts

SuperATV side mirrors

SuperATV door bags

SuperATV blowoff valve

Aftermarket Assassins Intake and charge tubes

Lowrance HDS 5 GPS on tilt column for co-driver

UTV Inc rear swaybar with Walker Links

Hess Billet Motor and Transmission Mounts

Hess Steering Wheel

Desertcraft Clutch dual intake and fan setup

Rugged Radios MAC3 pumper

24” Heavy Duty scissor Jack

Ruffstuff Heims on Entire Suspension

Trail gear 6ply Limit Straps Front and Rear

5 piece Custom 7075 T6 Aircraft Aluminum Skid Plate wrapped in HDPE plastic

Custom Tool box under the quick release aluminum hood

Liquimoly fluids and additives

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