Bikeman Performance 122hp RZR 900S

By Rich Curley
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Updated: June 27, 2016

Bikeman Performance, (BMP) has been making power, and more importantly – transferring that power to the ground, for many years. What people may not know is how they arrived at where they are today. What started back in 2003 as a business idea in a two car garage has advanced to a 22,000 square foot, full service, building and tuning custom speed shop today. Of course this didn’t happen overnight, but as their business grew, they added top notch speed experts and enthusiasts alike, to form a staff of professionals, who could tackle any project from full race builds to your daily driver and everything in between.

After spending two days at the shop, meeting their employees, and picking their brains for all the knowledge I could handle, I realized how much they have done in the SxS industry, Snowmobile, ATV and Motorcycle arenas. Years of experience, a proven track record and countless trophies, podiums and championships is just part of the rewards from all their hard work and dedication. So in short all the above adds up to products that have the latest technology built right in, from the simple bolt-on parts, to their full motor builds and custom tuning.

Even though Bikeman’s facility in Saint Croix Falls, Wisconsin is state of the art, fully stocked and ready to ship in quantity – they still treat every customer with the utmost care, concern, and pay close attention to the exact needs of each individual. All this and real world testing with complete Dyno tuning. Now we’re talking!

For this build we started with my 2015 Polaris RZR 900S. The 900S is a very capable machine but while racing in several different disciplines we found that it was time for a power increase, as many racers are running 1000+cc motors or turbos.

First off, we increased the displacement from 875cc to a 935cc by using their 935cc big bore kit. This kit comes complete with a Big Bore Cylinder Exchange, Two Wosner High Performance Pistons, Rings, Circlips, Wrist Pins, Base and Head Gaskets. Next we installed two BMP High Performance Camshafts, and a RZR 900 Shim Under Bucket Construction Kit, to make re-shimming easier. Next we needed some Cylinder Head Porting and Oversize Valves, BMP’s Professional Cylinder Porting, and clutching to take this motor from approximately 75hp to a ground ripping, 122hp!

We also installed a Bully Dog GT with BMP Level 6 Race Tune to get all we could from this motor. After the motor was rebuilt and installed it was off to the dyno to finish fuel mapping and clutch tuning. We chose to swing for the fence with this build, but as you can see with the attached horsepower and torque graph, there are many different upgrades available for the RZR 900S. Whatever your budget is, Bikeman Performance will help choose what upgrades are best suited for your specific application.

The #88 machine off to the Dyno for fuel mapping and clutch tuning!

Whether you are a racer like me and need the fastest and best of everything to push your machine to the front with reliability, or just need more power, or you simply like leaving your buddies behind scratching their heads, than Bikeman Performance will get you there. You can call them explain your needs and they will send all the parts you need to do the job yourself or simply send your machine or motor to them and let the experts take care of everything, like we did with this build. Whatever you need, just give Bikeman Performance a call and tell them Rich Curley from UTV Scene sent you. This will be the most important call you can make and you will be glad you did. I’m blown away with the improvements they made to mine.