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An upright step-through for everyday comfort
The DiroDi Primo Gen 4 pairs a low step-through aluminium frame with an upright riding position, front suspension and broad Schwalbe tyres. This listing follows the existing 500 W configuration, with a removable 48 V, 15 Ah battery. Integrated lighting, mudguards and a rear carrier are part of its practical focus for errands, leisure outings and routine local travel.
An accessible frame and adjustable position
The step-through layout makes getting on and off easier than a high top tube, while the riser handlebar supports an upright posture. Comfort grips and a Selle Royal Drifter saddle form the main contact points. Saddle and handlebar adjustment should be set around your reach and leg extension, not simply the lowest possible position.
Battery and rear-hub drive
The selected configuration uses a brushless rear-hub motor with a removable 720 Wh battery. Charging can be done with the battery removed, which is helpful when the bicycle is stored away from a power outlet. The display presents riding and assistance information; range depends on load, route and support rather than battery capacity alone.
Suspension, tyres and braking
A Suntour suspension fork includes a lockout function for adjusting the front-end setup. Schwalbe Big Ben Plus tyres measure 27.5 x 2 inches and are listed as puncture resistant. Tektro hydraulic discs work with 180 mm rotors, while the seven-speed Shimano Altus drivetrain gives you mechanical gearing alongside the motor assistance.
Useful equipment included
Front and rear lights, mudguards, a bell and a rear rack are listed with the bike. The drivetrain uses a 42T chainring and an 11-34T cassette for familiar everyday shifting. Optional baskets and carrying accessories should be selected for the intended load rather than assumed to be included with every photograph or configuration.
At a glance
Gen 4 step-through, selected 500 W configuration
48 V, 15 Ah removable battery with 720 Wh capacity
Suntour front suspension with lockout
Schwalbe Big Ben Plus 27.5 x 2-inch tyres
Tektro hydraulic discs and Shimano Altus seven-speed gears
Integrated lights, mudguards and rear carrier
Detailed specifications
Electric system
Battery A/H
15
Battery Voltage (V)
48
Battery W/H
720
Claimed maximum range (km; conditions apply)
90
Battery Weight (KG)
3
Charger Model
DPower 54.6V DC2.1 Charger
Removable Battery
Yes
Motor Power (W)
500 W, selected configuration
Motor Brand / Model
Brushless rear-hub drive
Motor Type
Brushless Geared Rear Hub Motor
Frame & contact points
Model colour options
Matte Black or Pale Blue
Ingress protection rating
IP54
Sitting Position
Upright
Grips Model
Velo Comfort Grips (Brown)
Handlebars Type
Riser
Saddle Model
Selle Royal Drifter Saddle
Frame Size (Inch)
16.5
Max Load (KG)
120
Frame Material
Aluminium Alloy 6061
Frame
Step-Thru
Axle to axle length (CM)
116
Handlebars Width (CM)
65
Total length (CM)
180
Bike Weight (KG)
28
Adjustable Handlebars Angle
Yes
Adjustable Seat Height
Yes
Box Gross Weight (KG)
33
Maximum Handlebars Height (CM)
122
Maximum Seat Height (CM)
95
Minimum Handlebars Height (CM)
113
Minimum Seat Height (CM)
75
Standover Height (CM)
42
Adjustable Handlebars Height
Yes
Configuration
Gen 4, Matte Black, 500 W option
Wheels, brakes & drivetrain
Brake Brand / Model
Tektro HD-E3520 (Hydraulic)
Brake Cut off Sensor
Yes
Brake Pads Model/Material
E10.11/Compound
Brake Type
Hydraulic Disk Brakes
Rotor Size (MM)
180
Cassette Tooth
11-34T
Chain Model
TEC C70
Chainring Model
Prowheel Double-Wall Chainring
Chainring Tooth Count
42
Derailleur Model
Shimano Altus
Gear Shifter
Shimano Altus
Number of gears
7
Suspension Type
Front
Suspension Compression Adjustment
Yes
Suspension
Yes
Suspension Model
SR Suntour Performance Front Suspension Forks with Lockout
Suspension Travel (CM)
12
Tyre Size (Inch)
27.5
Tyre Brand / Model
Schwalbe Big Ben Plus Tyres
Tyre Width (Inch)
2
Puncture Resistant Tyres
Yes
Tyre Colour
Brown
Front Wheel Mount Type
Quick-Release Axle
Rear Wheel Mount Type
Nuts
Equipment & dimensions
Approximate charge time (hours)
7.5
Front Basket
Optional
Bell
Yes
Bottle Holder
No
Front Carrier
Optional
Front Light
Yes (Integrated)
Mudguards
Yes
Rear Basket
No
Rear Light
Yes (Integrated)
Rear Rack
Yes (Integrated)
USB Charger
Yes
Wheel Lock
Optional
Throttle
Yes
Throttle Type
Thumb
Default Throttle Max Speed (KM/H)
6
Default Maximum Speed (KM/H)
25
Packaging Dimensions (CM) | L x W x D
149 x 25 x 87
Choosing your setup
The Primo is offered in multiple electrical configurations, and this description refers to the existing 500 W option rather than silently substituting the 250 W or 750 W versions. Confirm the final supplied motor setup and intended use before payment. We will also check frame fit, colour, carrying accessories and delivery details for your order.
Electric Bikes
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