Shimano steps sw e8000 l switchspecifically designed for e bike use, this shift lever creates an ergonomic switch position for electric mountain bike riding. Coming equipped with shimano's firebolt technology, this model offers quicker shifting operation across mixed terrain conditions with less effort.featuresuse e bikeswitch type fireboltfirmware update by e tube project yesassist mode change yesbutton numbers 2e tube port 1part number swe8000lweight 93.2gtechnologies firebolt what is “firebolt”? Quicker shifting operation instinctively even at any terrain with less effort. Ergonomic rotary switch match natural hand movement independent lever position adjustment faster and more accurate shifting short stroke, vivid index feeling. E tube the e tube platform's “plug play” and d fly wireless connections make it easier than ever to check the system's status, and apply customized settings to di2 and shimano steps components with a pc, tablet or smart phone. Wirelessly customize functions like shimano synchronized shift over bluetooth while out on a ride. Automatically checks for firmware updates on each startup to ensure all components are running the latest version. Pc, smartphone and tablet applications can help you quickly diagnose errors and simplify the repair process. Beautiful visualization of your real time shimano steps riding data on your smartphone. Advanced all weather design resists rusting, stretching, and freezing. Intuitive operation vivid click feeling firebolt. Power mode change “like normal shifting”. Ergonomic switch position for mtb riding. Walk assist mode motor assist available to push bike.a 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products.buy shimano components from chain reaction cycles, the world's largest online bike store.