Surface 604 Twist Review – $2.4k

The Surface 604 Twist is a folding fat tire electric bike with very approachable step-thru frame. Adjustable seat and handlebar height improve fit though it only comes in one size. Three colors including black, grey, and pink! Color LCD, powerful motor, clean wires and decals, quality 9-speed SRAM X5 drivetrain. Good weight distribution of motor and battery pack, low and even across the frame. Ideal battery location, easy to access for removal and charging. Good lock and charge port positioning, high up on both sides of the main tube. Optional fast charger, trunk bag, pannier bags, suspension seat post, and more. Free shipping and availability through 90+ dealers. Powerful hydraulic disc brakes with motor inhibitor and brake light blinking mode. High visibility reflective tires, premium integrated lights with side-cutout, and USB charging at the display. Torque sensing pedal assist is responsive and natural, trigger throttle overrides assist. Kickstand mount is fairly close to left crank arm and could get kicked while pedaling. Torque sensor may surge or activate unintentionally on rough terrain. Weighs 59lbs due to large motor, fenders, lights, and integrated rack. No mechanism to keep folded, no derailleur guard, chain guide, or cover to protect pants.

0:00 Introduction, 3 colors, one frame size but adjustable
0:42 Comfort touch points: grips, saddle, high-volume tires
2:05 Price, weight details, motor, battery, torque sensor
3:11 Hydraulic disc brake levers, motor inhibitors, throttle
4:07 Reflective tires, large rotors, hub spacing, kickstand
4:55 Frame stiffness, max load, bottom bracket, folding pedals
5:38 Company history and name, seat post, rims, spokes, rack
6:41 Chainring with guard, folding time lapse, drivetrain
7:20 Motor power cable, SRAM X5 derailleur, 9-speed 11-34T
8:14 SRAM trigger shifters, comments on folding retention
9:42 Battery pack unlock, removal, stats, and chargers
11:57 Powering the bike on, display walkthrough, USB port
12:59 Activating and showing the LED lights, settings menu
14:16 Ride test begins handheld camera then frame shots
16:48 Third person ride-by, conclusion with site resources

Full review with specs and comparison tool:

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