no modification is required

100mm extension cord x 1 for retractable landing gear servo

left and right "new real drive mechanism"

Current: 80A

If your A-arms aren't up to the abuse these massive monsters can dish out

Hot Racing - T6 Shock Tower Chassis Brace: Mini XRT Tires Wheels Inserts Ultra Soft no modification is requiredThe Hot Racing CNC 6061 T6 Shock Tower and chassis Brace for TRX mini XRT. COMMENTS: This is a must have option that allows room for electronics and adding a upper chassis brace contributing to a stronger chassis structure. Includes: One Front Shock Tower Brace One Rear Shock Tower Brace One Upper Chassis Brace Features: CNC 6061 T6 Construction Form Base for Seal Mounting of ESC and Receiver