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- Polygon Kalosi Altera - Urban eBike




















































































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 25km/h or 45km/h** 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 120 km.

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
Discover the ultimate riding experience with the powerful 500W motor, delivering 60N.m of torque for effortless, thrilling rides.

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 TYRES
Built for all-weather performance, these tyres 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
SUSPENSION
DRIVETRAIN
E SYSTEM
BRAKES
WHEELS
CONTACT POINTS
ACCESSORIES
* Specifications are subject to change based on availability
** The 45km/h variation of this product is designed for off-road use only. Click here for more details.
Geometry
S | M | L | |
Height | 155-165 cm | 165-175 cm | 175-185 cm |
(A) Stack | 666 | 666 | 666 |
(B) Reach | 395 | 410 | 425 |
(C) Head Tube Angle | 69 | 69 | 69 |
(D) Head Tube Length | 165 | 165 | 165 |
(E) Seat Tube Angle | 74 | 74 | 74 |
Seat Tube Angle Effective | 74 | 74 | 74 |
(F) Seat Tube Length | 460 | 500 | 540 |
(G) Top Tube Effective | 586 | 601 | 616 |
(H) Bottom Bracket Height | 294 | 294 | 294 |
(I) Bottom Bracket Offset | 60 | 60 | 60 |
(J) Chainstay | 480 | 480 | 480 |
(K) Wheel Base | 1148.8 | 1163.8 | 1178.8 |
(L) Standover Height | 253.3 | 244.2 | 242.8 |
*All measurements are in millimeters (mm), except for rider height.
Assembly
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!
Unboxing
Seat Height
Inflate Tyres
Handlebar- Quill Stem
Vintage Mudguard
Front Wheel- Nut Axle
Adjust Caliper Brakes
Install Pedals
Front Basket
Vintage Rear Rack
Adjust a Rear Derailleur
Pre ride Check
Unboxing
Seat Height
Inflate Tyres
Handlebar- Quill Stem
Vintage Mudguard
Front Wheel- Nut Axle
Adjust Caliper Brakes
Install Pedals
Front Basket
Vintage Rear Rack
Adjust a Rear Derailleur
Pre ride Check

Polygon Kalosi Altera - Urban eBike
