If you have a da Vinci Designs tandem and would like to upgrade to electric assist, you can do it with this frame kit and most of your parts for $4695

Included in this kit:

• 7005 Reynolds Aluminum frame
• OLI Move 80nm motor, computer display, and control buttons
• 522Wh, 14.5ah battery, mount, key lock, and charger
• New front cranks
• New intermediate shaft and necessary parts to move the front timing chain to the right side
• Chain tensioner, roller, and bearings

Other details:
The above price if for a stock frame size (see sizes below) and painted Lunar Silver
Custom sizes and colors are available for additional charges
The frame has a 44mm I.D. head tube, fits 31.6mm seatposts, and designed for 700c wheels. If any of those do not match what you have, you will need additional parts to work, or a custom frame.