Polaris New RZR XP 900 From CBR Performance

[CBR Performance]

11-12 Polaris RZR XP 900<O</O​

Stage 1 Cooling Kit<O></O>​

CBR Performance Products, INC. offers a Polaris RZR XP 900 Stage 1 Cooling Kit. This kit features the latest and greatest in high performance cooling technology. What gives this radiator the revolutionary edge is the core design, 55mm core, compared to stock 32mm core, with 14 fins per square inch. This advantage allows for a larger surface area for superb cooling performance. The custom built radiator allow a massive 20% gain in coolent capacity and features our dualpass design which allows the flow of coolent to pass through the core twice inhancing cooling capabilty. This kit is a direct replacement, utilizing the stock fan. Throughout testing, temperature have dropped as much as 30 degrees. Don’t let the heat slow you down! This kit is 100% aluminum and 100% tig welded with rounded tanks for a light weight more race kind of style. To maximize your cooling performance add a CBR RZR radiator to your order, call or email for more details. 951-246-2900 or email clint@CBR-performance.com<O</O

 

[skunx]

sounds like a good thing to have, the xp gets hot quick..
what kind of cost can be expected for one of the new radiators, and does it still retain stock location?

 

[TNT]

The XP900 doesn’t really get hot fast if you maintain it, no air, etc, and todays engine materials and seals have no issues below 300F melting points, but the lower the better for fatigue life. I tested it stock at El-Mirage, CA high desert in 115 deg dry heat last summer @ 4000 elevation thin air worse conditions for cooling. The fwd fins do little, the biggest issue is the upfront plumbing cavity subjected to hot turbulent flow by the hot radiator under the front hood. A larger radiator would radiate and convect less absorb more hot air is probably why it drops temps. I wired my fan always on dropped temps significantly, I mocked up a hood scoop so did it, allowed more laminar flow downdraft. Seen idle and WOT(80 mph) temps drop around 20F as did climb rates. Be interesting to see what a push fan working with the pull fan do. The stock system reacts to proper air. I’d give a link to my test data but don’t want to steer people to a worse site named RZR.NET.

With that said, racers that run extreme WOT may benefit from a larger radiator, but with a larger one comes the need for a larger pump to get the same CFM & pressure. I’d also be looking into dropping the plastic recovery tank, rubber lines & okiteler clamps, relocating the radiator perhaps to better air and away from plumbing/recovery tank too, a systems redesign I am sure CBR could help with.

PC 5 w/autotune help keep from running lean.

 

[CBR Performance]

sounds like a good thing to have, the xp gets hot quick..
what kind of cost can be expected for one of the new radiators, and does it still retain stock location?

it retails for $499 and remains in stock location and uses stock fan.