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Retrospec

Retrospec Koa Rev+ 2 Fat Tire Electric Bike - 6001

Retrospec Koa Rev+ 2 Fat Tire Electric Bike - 6001

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Retrospec Koa Rev+ 2 Fat Tire Electric Bike - 6001

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 delivers strong, consistent torque for hills, sand, gravel, and off-road terrain.
  • Fat tire design enhances traction, shock absorption, and stability across mixed and uneven surfaces.
  • Step-over frame geometry provides a solid, responsive ride feel for adventure-focused cycling.
  • Long-range battery supports extended rides for commuting, exploration, and outdoor recreation.
  • Multiple pedal-assist levels allow riders to fine-tune effort, speed, and battery efficiency.
  • Front suspension helps smooth out bumps and improves comfort on rough terrain.
  • Rugged construction and stable handling make it suitable for both urban and trail use
   
Q&A    

Q: What type of riding is the Retrospec Koa Rev+ 2 Fat Tire Electric Bike best for?
A: It’s designed for all-terrain riding, including sand, snow, gravel, trails, and urban commuting with electric assistance.

Q: What are fat tires good for on this bike?
A: The wide fat tires improve traction, stability, and shock absorption for smoother control on rough or loose surfaces.

Q: Does the Koa Rev+ 2 have pedal assist?
A: Yes. It features electric pedal assist that helps reduce effort on hills, long rides, and challenging terrain.

Q: Is the step-through frame easy to use?
A: Yes. The step-through design makes it easier to mount and dismount, especially useful for stop-and-go riding or carrying gear.

Q: Can this bike be used for commuting?
A: Yes. It’s versatile enough for daily commuting while also handling off-road and recreational riding.

Q: What kind of motor does it use?
A: It uses a rear hub motor that provides consistent electric power support for climbing and all-terrain performance.

Q: Is it comfortable on rough terrain?
A: Yes. The fat tires and upright geometry help absorb bumps and improve comfort on uneven surfaces.

Q: Why choose the Retrospec Koa Rev+ 2 Fat Tire Electric Bike?
A: It combines powerful electric assist, fat tire stability, and a step-through frame, making it ideal for both adventure riding and everyday use.


Maintenance Tips    
  • Check fat tire pressure weekly for traction, comfort, and optimal battery range.
  • Charge the 48V battery correctly—avoid full depletion and store at 30–80% charge.
  • Clean and lubricate the drivetrain regularly, especially after sand, mud, or snow rides.
  • Inspect and test hydraulic disc brakes often; replace pads when braking weakens.
  • Tighten key bolts monthly (stem, handlebars, seatpost, wheels, rack, axles) for safety.
  • Rinse off dirt, salt, and debris after rides to protect frame and components.
  • Keep electrical parts dry and clean (display, wiring, battery mount, charging port).
  • Check tires for punctures, sidewall wear, and embedded debris before each ride.
  • Monitor pedal assist and motor response for smooth, consistent performance.
  • Schedule a professional e-bike tune-up every 6–12 months for full system checks.