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Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
Polygon Kalosi Altera ST - Urban eBike [New]
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Description

BEYOND THE CITYSCAPE

The Kalosi Altera combines convenience, performance, and comfort in one sleek ride. With easy access, intuitive controls, and powerful assistance, it’s the ultimate way to move from here to there and everywhere in between.

LOW EFFORT HIGH ENJOYMENT

Our pedal assist system amplifies your effort up to 28 mph with five assist modes and 55Nm of torque. The integrated 690Wh battery allows you to tackle hills and glide over smooth roads, extending your journey up to 75 miles.

BUILT FOR EVERYDAY RIDES

With mudguards, lights, and a rear rack, the Kalosi Altera ensures a smooth, safe ride in any condition. It’s designed to go the distance, offering practicality, comfort, and versatility for every journey - day or night.

COMFORTABLE GEOMETRY

Engineered for ultimate comfort, the Kalosi Altera offers both low- and high-step frame options to suit your riding style. Its adjustable stem and raised handlebars enhance comfort and control for a smooth, confident ride.

BAFANG POWERFUL MOTOR

Experience the ultimate ride with the Bafang 500W Rear Hub Motor (Class 3), delivering 55Nm of torque for smooth and powerful performance.

SHIMANO CUES 9-SPEED DRIVETRAIN

Reliable and long-lasting, balancing performance and value. Built for extended life, reducing the replacement frequency for cassettes, chains, and derailleurs.

SUNTOUR MOBIE 32

The SR Suntour Mobie 32 coil spring fork delivers a powerful 75 mm of travel for an exceptionally smooth and comfortable experience.

MAXXIS METROPASS TIRES

Built for all-weather performance, these tires feature a 3mm rubber layer, cut-resistant reflective sidewalls for smooth rides, and enhanced visibility in rain, slush, or rough terrain.

RIDE SMART & STAY VISIBLE

Integrated front & rear lights boost safety, mudguards keep you clean, and the Bafang DP C245 1.9” TFT display provides real-time ride data at a glance.

Components

FRAMESET
FRAME
ALX e-City Commuting, Threaded BB 68mm, Integrated Downtube Battery, Internal Cable Routing
HEADSET
S.H.I.S. ZS 56/28.6 | ZS 56/40
SUSPENSION
FORK
SR Suntour Mobie 32, 75mm Travel, Coil Spring, Alloy Steerer, 15x100mm Thru-Axle
DRIVETRAIN
REAR DERAILLEUR
Shimano CUES RD-U4000 9-Speed
SHIFTER
Shimano CUES SL-U4010-R 9-Speed Trigger
CRANK
Prowheel EB01-Pro44A-S3 BK, 170mm
CHAINRING
44T
CASSETTE
Shimano CUES CS-LG300-9, 11-46T, 9-Speed
CHAIN
KMC Eglide 9-Speed
E SYSTEM
BATTERY
Greenway ZZ618, 690Wh ( 48V, 15Ah ) Smart battery utilizing LG 21700 cells
COMPUTER
Bafang CR.C101.C 48V 500W/Class 3 with Front + Rear light control
MOTOR
Bafang G020 500W, 48V, Rear Hub Motor, Class 3, 55Nm Torque, Torque Sensor, Cassette Compatible **
DISPLAY
Bafang DP C245.CAN 1.9" TFT color screen with Bluetooth connectivity, providing real-time data and system control
RANGE
Up to 75 miles – depending on factors like rider weight, terrain, and riding conditions.
CHARGING TIME
4 hours to 100%
CHARGER
Greenway MD310 with an output of 54.6V/4A
SWITCH
5 assist modes (Eco, Tour, Sport, Sport+, Boost), Light Control, USB C charging port
BRAKES
FRONT BRAKE
Shimano BR-MT201 Hydraulic Disc
REAR BRAKE
Shimano BR-MT201 Hydraulic Disc
ROTOR
Shimano SM-RT26, 180mm, 6-Bolt
WHEELS
FRONT HUB
Alloy, 15x100mm, 32H, 6B
REAR HUB
Bafang DC Motor 48V 500W, 10x141mm, 36H, 6B
RIM
Alloy Double Wall, 23mm Internal Width
TYRE
Maxxis Metropass 27.5x2.4", Reflective Sidewalls, MaxxProtect
MAX TYRE SIZE
27.5x2.6"
CONTACT POINTS
SADDLE
Selle Royal A059H
SEATPOST
30.9x350mm, Alloy
HANDLEBAR
680mm Width, 31.8mm, Alloy
STEM
75mm Length, 31.8mm, Alloy
PEDALS
Included
ACCESSORIES
KICK STAND
Included (direct mount to chain stays)
FENDER MUDGUARD
Front & Rear

* Specifications are subject to change based on availability
** This product is intended for off-road use only. Please click here for more details.

Geometry

  M L
Height 5'3" - 5'7" 5'7" - 5'11"
(A) Stack 621 621
(B) Reach 385 415
(C) Head Tube Angle 73 73
(D) Head Tube Length 120 120
(E) Seat Tube Angle 74 74
Seat Tube Angle Effective 74 74
(F) Seat Tube Length 400 431
(G) Top Tube Effective 593 593
(H) Bottom Bracket Height 294.5 294.5
(I) Bottom Bracket Offset 70 70
(J) Chainstay 445 445
(K) Wheel Base 1061 1091
(L) Standover Height 521 521

*All measurements are in millimeters (mm), except for rider height.

Assembly

Get ready to hit the road with your new bike! It’ll arrive almost ready to go, but you’ll need to do a quick setup first. Don’t worry, we’ve popped all the tools you’ll need right in the box.

If you’re a bike-building pro: You’ll be done in just 10-15 minutes.
Got a knack for fixing things? Give it 15-25 minutes.
New to the DIY world? Take your time, around 30-40 minutes, and you’ll get there!

Need some visual aids? We’ve got you covered! Just click on our step-by-step video guide below for a smooth setup. Happy cycling!

Step 1

Unboxing

Step 2

Seat Height

Step 3

Pre ride Check

Customer Reviews
5.0 Based on 2 Reviews
5 ★
100% 
2
4 ★
0% 
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3 ★
0% 
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2 ★
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  • bar height
  • pinstripe
  • budget ebike
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  • loading animation
  • rear
  • lights
  • seat post
  • tires
E
21 Jul 2025
Eugene
United States

A lot of ebike for the budget

I have a previous generation Polygon Kalosi ebike and this new version is built sturdier, has better acceleration, and just a nicer design overall. Polygon has become more refined over the years. A few small details that I like, are the super comfy hand grips, the two tone metallic paint, built in lights front & rear, the loading animation when you turn it on, and the eye catching reflective pinstripe on the tires. The seat post & handle bar height are both easy to adjust. For a budget ebike it ticks all my boxes.

Polygon Kalosi Altera ST - Urban eBike [New]
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E
14 May 2025
Eugene
United States

A lot of ebike for the budget

I have a previous generation Polygon Kalosi ebike and this new version is built sturdier, has better acceleration, and just a nicer design overall. Polygon has become more refined over the years. A few small details that I like, are the super comfy hand grips, the two tone metallic paint, built in lights front & rear, the loading animation when you turn it on, and the eye catching reflective pinstripe on the tires. The seat post & handle bar height are both easy to adjust. Power assist cuts out at 16mph but that's the law I guess. For a budget ebike it ticks all my boxes.

Polygon Kalosi Altera ST - Urban eBike [New]
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Was this helpful?  2    0