There can only be one king.
I've used substandard servo's in my rc's before, but until you actually experience the top grade servo's you have no idea how your truck is capable of running.
Two warnings-
#1- Your pocket is going to be about $230-$250 lighter to us these two servo's (which are different, look close)
#2- You will never drive any other servo in any vehicle ever again and enjoy it.
The "T" is 370 ounces of torque and the "S" has a .06 reaction time. Together they produce 550 ounces of torque with reaction times down in the hundredths.
Does it really matter? Yes it does. Oh what a difference.
z9100s
Specifications:
Type: Digital Ultra-Speed Metal Gear Servo
Torque: 150 oz/in @ 4.8V, 180 oz/in @ 6V
Speed: .06 sec / 60 degrees @ 4.8V, .06 sec / 60 degrees @ 6V
Dimensions (WxLxH): 0.827"x1.59"x1.569"
Weight: 2.3 oz
Bearing: Dual Wide Spaced Bearing
Motor Type: Coreless
Gears: Metal
z9100t
Type: Ultra High-Torque Digital Servo
Torque: 300 oz/in @ 4.8V, 370 oz/in @ 6V
Speed: .18 sec / 60 degrees @ 4.8V, .15 sec / 60 degrees @ 6V
Dimensions: 0.83" x 1.59" x 1.57"
Weight: 2.3 oz
Gears: Metal Gears