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Vvolt Centauri II vs Rad Power Radster Road

The Radster Road is the faster, more powerful commuter: Class 3 assist to 28 mph, a 750W hub motor, 720Wh battery and an 80mm suspension fork. The Centauri II is the lighter, lower-maintenance city bike: 44 lbs, a 120Nm mid-drive with an automatic three-speed hub and a Gates belt drive that needs no chain lube. Owners of both praise the hydraulic brakes and integrated lights; the Radster's extra weight and size suit taller riders on longer, faster routes, while the Centauri II suits riders who want an easy step-through and minimal upkeep.

  • Choose the Vvolt Centauri II if you want a light step-through city bike with belt drive, automatic shifting and near-zero maintenance.
  • Choose the Rad Power Radster Road if you want Class 3 speed, a bigger battery and suspension for longer or faster commutes.

Prices

  • Vvolt Centauri II: $91.00 at nevillewells.com (last seen Nov 3)
  • Rad Power Radster Road: $1,999.00 at CasaBikes Boston (checked today)
  • Difference: the Vvolt Centauri II is $1,908.00 cheaper than the Rad Power Radster Road at the latest prices (Nov 3 and Nov 10)
Vvolt
Vvolt Centauri II

Vvolt Centauri II

$91.00at nevillewells.comChecked Nov 3
See all prices and details
Visit nevillewells.com
Pros
  • Light at 44 lbs, easy to lift and store
  • Belt drive and sealed hub need almost no upkeep
  • Mid-drive motor feels natural and climbs well
  • Step-through frame suits a wide range of riders
  • Integrated 360-degree lighting with USB-C outlet
Cons
  • Capped at 20 mph assist
  • Rigid fork passes road buzz to the rider
  • Single frame size limits fit
  • Smaller battery than the Radster
Rad Power
Rad Power Radster Road

Rad Power Radster Road

$1,999.00at CasaBikes BostonChecked 12 h ago
See all prices and details
Visit CasaBikes Boston
Pros
  • Class 3 assist to 28 mph
  • 720Wh battery for longer rides
  • 80mm suspension fork smooths rough pavement
  • Two frame sizes and a higher payload
  • Passcode-protected controls
Cons
  • Heavy at about 74 lbs
  • Chain and derailleur need regular cleaning and tuning
  • Large footprint is awkward in apartments and on racks
  • Rear hub motor feels less natural than a mid-drive

What separates them

Vvolt Centauri IIRad Power Radster Road
MotorAnanda mid-drive, 120Nm torque, 650W peak750W rear hub
Top assist speed20 mph, Class 128 mph, Class 3
DrivetrainGates CDX belt with automatic three-speed rear hub, no shifter8-speed chain drivetrain with derailleur
SuspensionRigid aluminum forkSR Suntour fork, 80mm travel
Weight44 lbs with batteryAbout 74 lbs
Battery and range490Wh, up to 60 miles720Wh, 25-65 miles
Wheels and tires27.5 x 2.25 in, puncture-resistant, reflective sidewalls29 x 2.2 in Kenda Kwick, puncture protection, reflective strip
Frame and fitStep-through, one size, 300 lb payloadMid-step, regular and large sizes, 320 lb payload, 290 lb max rider

Price history

$2,399.00$91.00
Nov 3Nov 10
  • Vvolt Centauri II: lowest $91.00 on Nov 3 at nevillewells.com; $2,399.00 on Nov 10.
  • Rad Power Radster Road: lowest $1,999.00 on Nov 9 at Rad Power Bikes; $1,999.00 on Nov 10.

Prices at every store

Vvolt Centauri II

  • nevillewells.comNew

    Availability unknown

    $91.00Checked Nov 3
    Visit nevillewells.com
  • ELV Motors BikeNew

    Availability unknown

    $2,399.00+ $100.00 shippingChecked 14 h ago
    Visit ELV Motors Bike
  • Vvolt eMobilityNew

    Out of stock

    $2,399.00Free shippingChecked 14 h ago
    Visit Vvolt eMobility
  • CasaBikes BostonNew

    Out of stock

    $2,399.00Free shippingChecked 14 h ago
    Visit CasaBikes Boston
All 4 stores and price history →

Rad Power Radster Road

  • Electric Surf CoNew

    In stock

    $1,999.00Free shippingChecked Nov 9
    Visit Electric Surf Co
  • Ride On E-BikesNew

    In stock

    $1,999.00+ $8.24 shippingChecked Nov 9
    Visit Ride On E-Bikes
  • Bike BlingNew

    In stock

    $1,999.00+ $143.59 shippingChecked Nov 9
    Visit Bike Bling
  • CasaBikes BostonNew

    Availability unknown

    $1,999.00Free shippingChecked 12 h ago
    Visit CasaBikes Boston
All 7 stores and price history →

Specs compared

SpecVvolt Centauri IIRad Power Radster Road
Intended UseCommutingCommuting
Usage TerrainUrbanRoad
Bike TypeEbike, Electric BikeElectric Commuter Bike
Design MaterialAluminumAluminum
Weight44 lbs (WITH battery)74 lbs.
Design HighlightsIntegrated lightsPasscode-protected controls
Frame MaterialAluminumAluminum
Frame TypeStep-throughFull size frame
Frame ShapeStep-throughMid-step
Maximum Speed20 mph (Top Assist Speed)28 mph
Riding StyleEveryday urban riderCommuting
Load Capacity300 lbs (Total payload capacity)320 lb. (290 lb. max rider)
Show all 40 specsShow fewer specs
SpecVvolt Centauri IIRad Power Radster Road
Age RangeYouthful riders, Aging ridersADULT
Suitable TerrainUrbanPaved roads, Pavement
Typical UsersEveryday urban riderCommuters
DepartmentUNISEXUnisex
Brake TypeHydraulic brakesHydraulic disc brakes
Brake HighlightsShimano mountain-style brakes, 180mm rotorsHydraulic disc brakes
RangeUp to 60 miles (real-world range on pedal assis…25-65 miles per charge
Suspension TypeRigid—
Wheel Size27.5 in—

Questions and answers

Which is better for a hilly commute?
The Centauri II. Its 120Nm mid-drive drives through the gears, so it climbs steep grades better than the Radster's rear hub motor, which cannot use the drivetrain to multiply torque.
Which is faster?
The Radster Road. It is Class 3 with assist up to 28 mph; the Centauri II stops assisting at 20 mph.
Which needs less maintenance?
The Centauri II. The Gates belt lasts about four times longer than a chain and needs no lubrication, and the automatic hub has no derailleur to adjust. The Radster's chain and 8-speed derailleur need regular cleaning and tuning.
Is the Radster Road too heavy for apartment living?
It can be a struggle. At about 74 lbs it is roughly 30 lbs heavier than the Centauri II, which matters for stairs, tight hallways and car racks.
Which handles rough pavement better?
The Radster Road. Its 80mm suspension fork absorbs potholes and cracked asphalt; the Centauri II has a rigid fork and relies on its 2.25-inch tires.
Is the Centauri II worth stepping up to from a basic hub-motor bike?
Yes, if you value low upkeep and natural pedaling feel. The mid-drive, belt and automatic hub are a real upgrade in ride quality and service intervals, though you give up top speed and suspension.

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Wheel Hubs
Rear hub motor system
—
Frame Fork MaterialAluminum—
Skill LevelRiders of all abilities—
Tire Diameter27.5 in—
Tire Width2.25 in—
Tire HighlightsReflective sidewalls, Puncture-resistant—
Battery Capacity490 Wh—
Power SourceBattery—
Battery Charging TimeAbout 5-7 hours—
Removable BatteryYes—
Battery Amperage13.6 Ah—
Power HighlightsIntegrated battery—
E-Bike Class—3
Motor—750W rear hub
Battery size—720 Wh
Wheel x Tire Size—29" x 2.2"
Drivetrain—8-speed
Suspension—80 mm suspension fork
Dimensions—Total Length: 76" (193 cm), Total Length: 75.5"…
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