Castle Creations B-Link 2 Blurtooth Interface RS4 Parts Multi-directional grooves increase traction and

Multi-directional grooves increase traction and deliver better grip to enhance cornering stability

Durable titanium alloy metal gears with dual ball bearings

For camber linkage

Through-truss bridge with blinking light detail

Castle Creations B-Link 2 Blurtooth Interface RS4 Parts Multi-directional grooves increase traction andCastle Creations B Link 2 Blurtooth Interface Program, update, and fine tune your Castle ESCs wirelessly anywhere. The B LINK 2 Bluetooth Interface builds on years of real world feedback to deliver faster connections, expanded compatibility, (including the Cobra Series), and a fresh, intuitive app experience. Castle's FREE APP DOWNLOAD (Castle Link 2) is readily available in the Apple App Store and Google Play! Includes: B Link 2 Bluetooth Interface