Not a performance rear? This system has won as many races in the USA as any other system, even the fact that it is almost boob proof some boobs can screw up anything. Truck arms are in fact are torque arms solidly mounted in the rear the arms transfer energy by absorbing the initial shock under acceleration, under most systems this shock is transfered to the tires causing tire spin. Under braking the arms transfer the braking torque into the chassis pulling the car downward to the track.
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