Retrospec Koa Rev+ 2 Fat Tire Electric Bike - Step Through - 6003
Frameset
- Sizes: 16.5" Step Through;
- Material: Alloy, 6061 TIG welded, hydroformed tubing
- Dropouts:
- Decals:
- Replaceable Der Hanger
- Fork:
DriveTrain
- Derailleur - Rear: Shimano Altus 8speed
- Shifter: Shimano Rapidfire Plus
- Crankset: 46T w/double alloy chainguard
- Chain: KMC Z8.
- BB: JIS square taper cartridge
- Freewheel/Cog: Shimano 11-34T
Wheelset
- Rims: Alloy 36H for disc brake
- Hubs: Alloy bolt on 17mm nut
- Spokes: 13G/2.3mm w/brass nipples
- Tires: 26 x 4.0, with moto-belt anti-puncture protection
Components
- Headset: Threadless, 1 1/8"
- Brakes: Tektro hydraulic with ebike specific 180mm rotors and semi-metalic pads
- Handlebars: Alloy 700mm
- Grips: Comfort with alloy lock rings
- Stem: Die-Casting alloy; 31.8mm barbore, ext. 60mm +6d, 4-bolt faceplate
- Saddle: SuperSoft MTB
- Seatpost: Alloy; 30.9mm diameter, 400mm length
- Seatpost Clamp: Alloy QR
- Pedals: Alloy platform 9/16"
Extras
- Kickstand: Rear mount, adjustable, aluminum alloy
- Lights: Integrated/system-powered front and rear lights w/brake function
- Fenders: Full coverage front and rear
- Tools: 4 pcs: 15mm open/box, 10mm open/box, 5/6mm hex key, cross (Phillips) screwdriver
- Weight - Bike (Assembled w/battery): 71 lbs
- Class: Class 2: pedal-assist and/or throttle-assisted, 20 mph max.
- Rover Compatible: Yes
E-Power System
- Motor: 750W geared
- Battery: 48V 720W LG 21700 cells
- Modes: PAS/Thumb throttle Left side , cadence sensor
- Display: Full color display with 6 levels of assist, anytime throttle and walk mode.
- Controller: Retrospec 22Amp
- Charge Time: Approximately 6hrs
- Watt Hours: 720Wh
- Range: 720Wh: 50+ Miles
What our Experts Think
- Powerful electric assist system provides strong acceleration for hills, sand, and off-road terrain.
- Fat tire design improves stability, traction, and control across dirt, gravel, snow, and beach paths.
- Step-through frame makes mounting and dismounting easy, improving accessibility and comfort.
- Long-lasting battery supports extended rides for commuting, adventure, and recreational use.
- Multiple pedal-assist levels let riders balance effort, speed, and range efficiently.
- Front suspension enhances comfort by absorbing bumps and uneven surfaces.
- Upright riding position promotes control and reduces fatigue on longer journeys.
Q&A
Q: What type of riding is the Retrospec Koa Rev+ 2 Fat Tire Electric Bike best for?
A: It’s built for off-road trails, sand, snow, rough terrain, and all-terrain commuting with strong electric pedal assistance.
Q: What makes the fat tires useful?
A: The wide fat tires provide extra traction, stability, and shock absorption for smoother riding on uneven or loose surfaces.
Q: Does the Koa Rev+ 2 have pedal assist?
A: Yes. It features electric pedal assist that helps reduce effort while climbing hills or riding long distances.
Q: Is the step-through frame easy to use?
A: Yes. The step-through design makes mounting and dismounting easier, especially useful for stop-and-go riding or carrying cargo.
Q: Is this bike suitable for commuting as well as off-road use?
A: Yes. It’s versatile enough for daily commuting while also handling dirt paths, gravel roads, and beach riding.
Q: What kind of motor does it use?
A: It uses a rear hub electric motor designed to deliver consistent power for climbing and all-terrain performance.
Q: Is the ride comfortable on rough terrain?
A: Yes. The combination of fat tires, suspension support (if equipped), and upright geometry helps absorb shocks and improve comfort.
Q: Why choose the Retrospec Koa Rev+ 2 Fat Tire Electric Bike?
A: It offers powerful electric assist, a step-through frame, and fat tire stability, making it a strong choice for all-terrain adventure and versatile commuting.
Maintenance Tips
- Check fat tire pressure weekly (critical for grip, range, and ride comfort on mixed terrain).
-
Charge battery properly (48V system)—avoid full depletion and store at 30–80% for longer lifespan.
- Clean and lightly lubricate the drivetrain regularly, especially after sand, mud, or snow rides.
- Inspect and test hydraulic disc brakes often; replace pads when braking power decreases.
- Tighten key bolts monthly (stem, handlebars, seatpost, rack, axles) due to higher e-bike torque.
- Wipe down frame and step-through aluminum structure after wet or dusty rides to prevent buildup.
- Keep electrical components dry and clean (display, wiring, battery mount, charging port).
- Check tires for punctures, sidewall wear, or embedded debris—fat tires require routine inspection.
- Monitor motor assist and pedal response for smooth engagement and consistent performance.
- Schedule a professional e-bike tune-up every 6–12 months for motor, brake, and drivetrain calibration
Damage 
Loss 
Theft 
