EcoPower WP827 X24 Metal Gear Micro Servo Direct Fit For Axial™ SCX24 (HV) 42mm Shocks intended as an accessory for AXI204000 intended as an accessory for TRX 4 kits and a replacement part for the TRX 4 Sport Unassemsbled Kit 100 102 recreates the British advanced jet trainer and light combat aircraft the EcoPower WP827 X24 micro Servo features a first of its kind innovative built in direct axle and links mount system that revolutionized the game by allowing the WP827 X24 to be directly mounted to the SCX24 axles with no need for a servo mount output shaft spline and an aluminum mini 25T servo horn to ensure maximum durability and flex free operation under the harshest conditions