Improved cooling has always been an important factor for the longevity of any motor, so after installing a big-bore engine kit in our Raptor 660R, we were in dire need of increased cooling via an aftermarket large-capacity radiator. After searching and comparing various companies, we decided to go with PWR Performance Products. They offered 18 fins per inch on their unit, and claimed increased durability. It is also 100% Tig-welded and boasts a high-polished finish. This is exactly what we're looking for to replace our OEM radiator with.
From the packaging alone we knew we were dealing with a company that focused on quality. The radiator came sealed in a custom box with packing that would handle the roughest of delivery men. When removing the PWR radiator from the box it was evident that time was taken to ensure a quality product landed in the customer's hands. From the CNC-machined cap mount to the lower mounting brackets with amazing Tig welds, it was very clear the radiator was well built. The core was nearly twice as thick as the stock unit, and the upper and lower tanks which provide the extra coolant capacity were larger as well.
The installation was very straight forward and proved to be a simple bolt-on “Direct-Fit”. The PWR radiator used the factory rubber bushings, temperature sensor, and fan mount nut clamps. We did have to do some simple modifications to the nut clamps that hold the fan on due to the increased thickness of the new mounts. Even with the small modifications performed, this install took just over 30 minutes. When refilling the PWR radiator, we noticed an increase in capacity by 30%, which we felt was very impressive.
We performed heat tests to compare the time it took our Raptor to reach the fan operation set point. With the engine idling, the factory Yamaha radiator reached 201 degrees at the top radiator tank in 12.5 minutes as the fan kicked on. The PWR radiator rose to only 159 degrees in that time period, and increased the time it took the fan to come on by nearly 5 minutes. We feel that this is an excellent example of how the larger fluid capacity and heat dissipation qualities of the PWR exceed the Raptor 660R's OEM radiator.
At a retail price of $449 it's an expensive addition, but craftmanship and attention to detail were second to none. The radiator was everything PWR claimed it to be, and we couldn't be happier with the outcome. Whether your motor is built to the max or mildly modified, you'll always benefit from running cooler temperatures, and this radiator will provide that. PWR Performance Products makes radiators and other related products for most popular ATVs, along with cars, motorcycles, and more. For purchasing information you can visit their site at http://www.pwr-performance.com or give them a call at 877.656.9256.
Quality: 5/5
Performance: 5/5
Installation: 4/5
Value: 3/5
Overall: 4.25/5
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With its red logo stamping and highly polished finish, the PWR radiator is a gorgeous product!
When compared to the stock Yamaha radiator, the PWR's large size becomes clear.
After 12.5 minutes of engine idling, the PWR was over 40 degrees cooler than stock.
Cooler temperatures, quality craftsmanship, and outstanding looks...the PWR has it all!
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