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The "AR320410 Bumper Springs (2) 4x4" is used in the following:
The GRANITE 4x4 BLX will rock you to the core with its jaw-dropping power and brushless performance. A brushless ESC and motor combo gives you unsurpassed speed, while a Tactic TTX300 3-channel transmitter provides confident control.
$299.99
The SENTON is the short course contender that's built for spectacular speed and extreme toughness. Its power comes from a 3S-capable BLX100 brushless ESC and motor system.
Step up from brushed bashing to the 50+ mph performance of the 1/10 scale Big Rock Crew Cab 4X4. Its body supplies realistic "street" style, and inside, ARRMA has given this monster the toughness to take full advantage of its extreme brushless power!
$319.99
$219.99