City
Origin
Radon is the house bicycle brand of H&S Bike-Discount, founded in Bonn in 1989 by two students, Ralf Heisig and Christopher Stahl, on a 20 square-metre shop floor. The Radon project itself started in 1993 with a simple pitch: engineer-led frames and high-end component packages sold direct, without the dealer markup. Bike-Discount went online in 1999 as one of Germany's early mail-order bike pioneers, and by 2013 had opened a 24,000 square-metre megastore in Bonn-Hardtberg. Radon built its reputation on race-bred road bikes and mountain bikes (sponsoring pro MTB teams from 2010), but the same direct-to-consumer, spec-for-money philosophy carries into its everyday urban and trekking bikes — where a hub-gear commuter or a suspension-forked tourer arrives with a component list that usually costs a class more elsewhere.
Specifications
- Frame
- Aluminium (hydroformed/triple-butted on trekking SUNSET; diamond or trapeze/low-step on urban)
- Weight
- kg
- Drivetrain
- Belt/hub option: Shimano Alfine 11-speed hub (URBAN Supreme FE); derailleur trekking builds run Shimano Deore/CUES 1x/2x
- Brakes
- Hydraulic disc — Shimano BR-MT500, 160/180mm rotors
- Wheels
- 28" (700C), Alex MD21 rims
The verdict
- Direct-sale value — component spec (hydraulic discs, hub gears, integrated lighting) is above segment price.
- Low-maintenance city setup available (Shimano Alfine 11 hub, belt-friendly, enclosed) that shrugs off Baltic winters and road salt.
- Commute-ready out of the box: rack, dynamo/integrated lights, mudguards and puncture-resistant Schwalbe tyres.
- 'City' is not a defined model — buyers must pin down the exact Radon (Urban Supreme, Sunset, Solution) to know the real build.
- Online-only sale means no local dealer fit/service in the Baltics — assembly and warranty run through Germany.
- Hub-gear/belt urban builds carry a price premium and are heavier to service DIY than a plain derailleur bike.
Generations
URBAN Supreme FE era (2017-2019)
- Premium low-maintenance hub-gear city bike; award-winning value, discontinued build.
- Frame
- Aluminium urban
- Brakes
- BR-MT500 hydraulic disc
SUNSET / SOLUTION era (current)
- Current commuter-tourer line covering the 'city' need with suspension fork, rack and lights.
- Frame
- Hydroformed aluminium trekking
- Brakes
- BR-MT500 hydraulic disc
Versions & builds
Every official build side by side — differences highlighted.
| Spec | URBAN Supreme FE (city) | CurrentSUNSET 9.0 (trekking) | CurrentSOLUTION / SOLUTION Comfort (city-trekking) |
|---|---|---|---|
| Year | 2019 | 2024 | 2024 |
| Frame | Aluminium diamond/low-step | Hydroformed triple-butted aluminium | Aluminium, comfort/low-step geometry |
| Drivetrain | Shimano Alfine 11-speed hub | Shimano CUES 2x11 (32/46 x 11-45) | Shimano derailleur (Comfort trims) |
| Brakes | Shimano BR-MT500 hydraulic disc, 160mm | Shimano BR-MT500 hydraulic disc, 180/160mm | Hydraulic disc |
| MSRP | €1,299 | — | — |
| Purpose | Flagship | Balanced | Value |
Tags
Related models
Where to buy Radon City in Estonia
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