The Hong Kong based Kingmax have introduced the RGB01S: a new high torque brushless crawler servo designed for 1/10th to 1/8th scale RC crawlers and trucks. This beastpushes over 48Kg/cm of stump-pulling torque at 7.4V with 0.11 speed, easily strong enough to move heavy 2.2 tires.
The RGB01S features full stainless steel gears, full aluminium housing, a 25T output shaft and a durable brushless motor to make it extremely tough.
Source: Kingmax