The 3S Brushless BOOST Box is also compatible with all 4X4 MEGA vehicles. BOOST Models will require an SLT3 receiver for compatibility (such as Spektrum SLR300). Not compatible with stock NiMH Battery (SPMX33007C3H) and IC3 Connector. ARRMA 3S Brushless BOOST Box, ARA210005. Ready for the next level of ARRMA RC bashing performance? The ARRMA 3S Brushless BOOST Box upgrade package comes with everything you’ll need to increase the speed capabilities of any 4X2 BOOST or MEGA vehicle, including a 3S brushless motor and ESC. Even without upgrades, ARRMA 4X2 BOOST and MEGA brushed RC vehicles are capable of reaching 30+ MPH speeds in optimum conditions and optional gearing. Now imagine what your RC basher can do after you upgrade it to brushless power using the ARRMA 3S Brushless BOOST Box option part package! The ARRMA 3S Brushless BOOST Box is a complete power module that includes a Spektrum Smart 3S ESC, Spektrum brushless motor, heatsink, and cooling fan, along with 15T, 18T, and 20T pinions to suit the different tire diameters of ARRMA 4X2 BOOST and ARRMA MEGA models. The ARRMA 3S Brushless BOOST Box also provides a QR code to an online assembly video that demonstrates simple, step-by-step installation. With ARRMA BOOST option parts, the best beginner’s bashers just keep getting better as your skills grow! BOOST your vehicle’s speed potential whenever you’re ready. Includes top-quality Spektrum Smart 3S brushless ESC and brushless motor. Step-by-step online video demonstrates easy installation. Bonus color ARRMA BOOST decals also included. Go from RC bashing to RC blasting! The 3S Brushless BOOST Box is the recommended next upgrade for the following ARRMA 4X2 MEGA BOOST basher vehicles after the ARA21003 4X4 Transmission Upgrade Set. With Spektrum Smart Battery & S120 USB-C Smart Charger. ARA4102SV4T1 GRANITET 4X2 BOOST Monster Truck RTR Orange/Black. ARA4102SV4T2 GRANITET 4X2 BOOST Monster Truck RTR Blue/Black. ARA4103SV4T1 SENTONT 4X2 BOOST Short Course Truck RTR Green/Black. ARA4103SV4T2 SENTONT 4X2 BOOST Short Course Truck RTR Blue/Black. ARA4105SV4T1 VORTEKST 4X2 BOOST Stadium Truck RTR Red. ARA4105SV4T2 VORTEKST 4X2 BOOST Stadium Truck RTR Gunmetal. Without Battery & Charger. ARA4102V4T1 GRANITET 4X2 BOOST Monster Truck RTR Orange/Black. ARA4102V4T2 GRANITET 4X2 BOOST Monster Truck RTR Blue/Black. ARA4103V4T1 SENTONT 4X2 BOOST Short Course Truck RTR Green/Black. ARA4103V4T2 SENTONT 4X2 BOOST Short Course Truck RTR Blue/Black. ARA4105V4T1 VORTEKST 4X2 BOOST Stadium Truck RTR Red. ARA4105V4T2 VORTEKST 4X2 BOOST Stadium Truck RTR Gunmetal.