RPM is a well known company for their super strong plastic/nylon parts. They recently released new a-arms for the Team Associated RC18 truck series. The a-arms are made with same plastic/nylon blend as any other RPM’s products, so we know they are tough and they are available in black or in blue.
Installation is simple and took only 20-30 minutes for the front and the rear. The shock mounting holes are exactly located at the same place as the stock a-arms to keep the same suspension geometry. The major differences between the RPM’s a-arms and the stock ones are the hinge pins holes and the shock mounting holes that are oversized to absorb hard impacts.
The outer hinge pin is held in place by a 2-56 screw and a plastic hinge pin retainer clamp. Note that the screw is located farther from the hinge pin’s hole to add more strength to the a-arm.
For testing, I ran my truck in a parking lot. At first the suspension was not moving freely like before. But after few runs, the a-arms were moving freely. This is due to the tight fit of the hinge pins in the a-arm. A little break-in period is required. As expected, the handling was the same as with the original a-arms and the suspension react exactly the same way as before. I jumped the truck many times and even hit a sidewalk and nothing broke.
I didn’t have the chance to test the a-arms on my race track because there still one feet of snow but I’m convinced that the a-arms will perform perfectly.
RPM’s a-arms will add extra strength to any abused or brushless powered RC18 as they’ll add style to your ride. They are well designed, strong and fit perfectly. Like all others RPM’s product, they are made to absorb any hard impacts and they will last long time. Even if the Team Associated RC18 truck series are strong and durable, the RPM’s a-arms are a good way to bullet proof even more an already indestructible truck.