DA900 Pro Servo & Arms Choose Size:T-25 2" 4-40 9g) due to the substitution

9g) due to the substitution of anodized aluminum hex standoffs vs nylon

150 and 170cc engines require 28mm or stepped couplers and clamps

*For use on Desert Aircraft engines only

the Reg Box will bi-pass the receiver

DA900 Pro Servo & Arms Choose Size:T-25 2" 4-40 9g) due to the substitutionDA900PRO High Performance Servo Massive torque and high speed Compatible with any radio using PWM control XBus compatible allowing 120 to 180 deg travel Slow start feature Nitrided steel gears for resistance to heat, wear, corrosion, and fatigue Special B gear (next to pinion gear) made from ULTEM with 572 deg heat resistance Super high quality Japanese ball bearings Ultra high performance brushless motor made in Japan Oversize 7mm T25 Spline (Not