New take off parts. This combo is from a Vendetta 1/8 but will also fit other Arrma Mega & 3s vehicles. 550 3900kv Spektrum motor. 100 Amp Spektrum ESC. Arrma wrap around style heat sink and fan. 08 / 32p D Style 20t pinion. 08 / 32p D Style 26t HIGH SPEED pinion 70+MPH. Perfect upgrade for brushed 540- and 550-size brushed motors with the same diameter and mounting pattern (vehicle must accept pinions with a 5mm bore). 5mm shaft for added durability. High-quality 4-pole sintered rotors. Includes 4mm gold plated bullet connectors. Precision ball bearings and hardened steel 5mm shaft. Fast, powerful 32-bit ARM M4 processor. Multiple options for easy programming. Smart ESC Programming Box. SmartLink USB Updating and Programmer application. Automatic LiPo low-voltage cutoff. Ideal for 4WD 1/10th – 1/8th scale surface applications running on 3s Lipo setups. Compact for easy installation in most applications. Ready to install – no soldering required. Rugged plastic case with mounting tabs. Aluminum heat sink for high efficiency. Firmware updatable through the Smart ESC Programming Box. High heat-resistant ICT connectors, backwards compatible with ECT connectors.