The Polaris RZR S 800, the first showroom-ready, pure sport, long-travel UTV, was a standard setting machine when it was introduced. UTVs have advanced so much so fast, yesterday’s cutting edge vehicles need some help to match the features and performance on today’s top rides. We grabbed a test rider’s RZR S and added a group of easy bolt-on upgrades that give it a whole new look and feel. Even though we used products from quite a few leading accessory companies, you can find almost all of them at www.rockymountainatv.com.
MORE POWER, SAME RELIABILITY
The two-valve-per-cylinder pushrod twin that powered first-generation RZRs is a solid, reliable, powerful powerplant, but it’s not rugged enough to handle drastic performance modifications, unless you maintain it like a race engine. We kept the engine mods simple—an FMF exhaust system, a high-flow Uni Filter and a Dynojet Power Commander V—to tune the fuel injection to match the increased intake and exhaust flow. These bolt-on mods gave us a healthy serving of extra power we could feel without disturbing the engine’s relaxed maintenance requirements.
STEPPING UP SUSPENSION PERFORMANCE
When the RZR S was introduced, its 12-inch-travel suspension was cutting edge, but the basic preload-adjustable shocks many models came with don’t age well. Elka Stage 4 shocks are rebuildable, so you can keep them performing like new, and they give the RZR S adjustable high- and low-speed compression damping, adjustable rebound damping and adjustable spring preload, just like today’s top-of-the-line high-performance sport UTVs. For most drivers, the RZR S’ travel will be all they need once they feel the Elka’s improved ride quality and impressive bottoming resistance. It had been a while since we drove a RZR S, and with high-end suspension, we were stunned how good it felt. The vehicle’s agile handling and impressive stability compare well with today’s high-performance sport UTVs.
MATCHING THE LUXURIES WE’VE BECOME ACCUSTOMED TO
The longer the lists of standard equipment become on today’s UTVs, the more spoiled we get. It’s hard to live with nets once you’ve had doors, and we miss functional extras like beadlock wheels, and even small things like mirrors when we drive without them. Fortunately, affordable aftermarket parts like Tusk doors, extended cages, storage bags and mirrors, Blingstar bumpers, STI tires and wheels, and others make it easy to outfit a fairly basic UTV like an expensive, limited-edition, factory-made custom machine without spending a fortune.
Nearly every major product for this project can be obtained directly from Rocky Mountain ATV/MC (www.rockymountainatv.com,  336-5437); you can get them from their manufacturers too. Here’s where to find what you need to turn your RZR into your own 2015 high-performance custom machine.
Power Commander V: $399.95
FMF Racing: www.fmfracing.com,
can with stainless steel mid-pipe
Stainless steel end cap: $379.99
Uni Filter: www.rockymountainatvmc.com,
Two-stage air filter: $34.99
Attack Graphics: www.attackgraphics.com,
Custom graphics kit: Starting at $99.99
Tusk Offroad: www.tuskoffroad.com,
Aluminum suicide doors: $399.99
Extended roll cage: $299.99
Rear-view mirrors: $18.99 each
Overhead storage & map bag: $29.99
UTV cab pack: $29.99
STI Tire & Wheel: www.rockymount
STI Roctane XD tires: $119.99, front;
STI HD beadlock wheels: $99.99each
CV4: www.cv4.net, 800-874-1223
Formed silicone coolant hoses
High-temp radiator cap (CV715-31M):
Blingstar Gladiator front bumper: $261.99
Parking brake system: $159.99
Elka Suspension: www.rockymountain
Front and rear suspension