The EcoPower "Mini Essential" Tool Kit includes essentially every tool you need to complete an intense wrenching session on micro sized models, as well as other larger kits that use appropriately sized hardware.
The Ecopower "Trail" SCX24 2S, 450mAh, 30C LiPo Battery is a great option for anyone looking to increase runtime in their SCX24. When compared to the stock 350mAh, this battery offers 100mAh more capacity and weighs just 29 grams.
The EcoPower 827 12g Digital Metal Gear Micro Servo is an affordable, high voltage "mighty micro" upgrade. This servo is a great choice for the Dig/Shift servo in the Axial SCX10 III, as well as a Dig servo in the Axial Capra.