IntroductionThe FX-R reversing speed controller leads the industry in pure rock crawling efficiency. With its tiny footprint, enhanced drag brake resolution with lock-down holding power, adjustable reverse type with reverse hold-up, no reverse or instant reverse, ultra smooth low speed creep and precision throttle and braking response, the FX-R easily provides you the edge over the competition. The FX-R has thousands of possible settings ideal on-board with Tekin's QuickTune ™ Programs and can comprehensive tuning and upgrading when used with Tekin's HotWire PC Interface *. The FX-R can likewise handle your power requires with THREE Li-Po compatibility when used with 35 turn or greater motors. Install the FX-R and step up to smarter, smaller, much faster electronic devices. And if you have an older FX-R you can download the latest software updates with our HotWire interface.