Wired Shimano Deore Di2 11-speed electronic shifting, made to provide smooth reliable shifting for electric mountain bikes. 

SPECIFICATION - 

• Precise and clean wired shifting which Integrates with your Steps Ebike system via EW-SD300 wires
• When connected to your Steps Ebike system Auto shift and Free Shift function can be used
• Crash recovery function, absorbs impacts and returns to its original position
• Shadow ES features a super low profile skid plate design and optimized slant angle for optimal clearance
• Shadow ES uses a dual spring chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting
• The Shadow ES system is also zero maintenance and has no degradation of performance
• Unique structure using two springs has a tighter chain wrap that improves shifting and security with increased spring force by 70%, allowing the chain to mesh firmly with the sprocket
• With the tighter chain wrap skipping is prevented even as the cogs wear
• 13T solid pulleys and decreased derailleur tension prevent high chain tension in low gears
• Dependable steel pulley cages
• Cold forged wide alloy links and pivot body
• Fluorine-coated link pin bushings
• Specifically designed to work with 11-speed LINKGLIDE drivetrains
• 11-50 tooth compatible SGS cage