The appeal of having fewer parts
A single-speed bike has no shifters, no cables for gears and no derailleur hanging near the rear wheel. The drivetrain is basically a chain linking one chainring and one cog. Fewer parts mean fewer things to adjust, clean or replace, and that is a large part of why many riders are drawn to it.
This article looks at the reasons people choose one gear, and at the limits that are worth knowing before you buy. The aim is to help you decide, not to push you in either direction.
Lower maintenance
Gear systems need cable tension, alignment and occasional replacement of parts that wear. A single-speed removes much of that. With one gear, the chain runs in a straight line, so there is less wear from running at an angle, a problem that appears on geared bikes through cross-chaining. Cleaning is also quicker, since there are fewer places for grit to collect.
This does not mean the bike looks after itself. The chain still needs cleaning and lubrication, and it still stretches with use. Learning how to spot chain wear and keeping up with basic bike maintenance remains important. Brakes, tyres and bearings are the same as on any other bike.
If you want even less upkeep, other low-maintenance routes exist. A belt drive replaces the chain, and a hub gear hides the gears inside the rear hub. Both are covered in their own articles, and each has trade-offs in cost and repair options.
A quiet, simple ride
With no gear changes, there is no clicking and no clunky shifts. Many riders enjoy the quiet, direct feel, and the bike can feel light and uncomplicated. There is also less to think about while riding. Your attention goes to the road, the traffic and your own rhythm.
For city use, that simplicity can make a bike easy to live with. For short, flat or gently rolling trips, such as an everyday bike commuting route, one gear often does the job. Fewer parts can also mean a lower cost to buy and to repair, although prices vary and depend on the specific bike.
What you give up
The honest downside is range. With one gear, you cannot pick an easier setting for a steep climb or a harder one for a fast descent. A ratio that feels pleasant on the flat will feel heavy going up a long hill, and one chosen for hills may feel too spinny on flat roads. You will sometimes need to stand, slow down or walk. Walking up a steep section is a perfectly good decision.
A few situations make a single-speed less suitable:
- Steep or long hills, where a very easy gear would be needed.
- Long routes with mixed terrain, where changing conditions call for a wider range.
- Headwinds and loads, where an easier gear helps to keep pedalling comfortably.
- Group rides with riders on geared bikes, where speeds change often.
None of these rule out one gear. They are things to weigh against your own routes and fitness. If you ride in hilly areas and want simple upkeep, an easier ratio is usually a better fit than a hard one.
Choosing a ratio you can live with
The gear ratio is the number of teeth on the front ring divided by the number on the rear cog. A larger number means a harder gear. For example, 40 teeth on the chainring and 20 on the cog gives a ratio of 2.0, which is easier to turn than 44 over 16, which gives 2.75. Your terrain matters more than any rule of thumb, and it is worth borrowing a bike or trying a few rides before committing. A shop can change the cog or chainring if the first choice is wrong, a subject also touched on under gear ratios.
Riding technique matters more
Because there is no gear to fall back on, technique carries more weight. Use momentum on rolling roads, stand when you need extra effort and keep your pedalling smooth. Plan your route so that you avoid unnecessary stops, since starting from rest always takes more effort in a hard gear. Good braking habits are also vital, since you may arrive at junctions faster than you expect.
If the bike is a fixed gear, where the pedals always turn with the wheel, the experience is different again and needs extra care. That topic has its own dedicated article.
Is it right for you?
A single-speed may suit you if your routes are mostly flat or gently rolling, you value low maintenance and you do not mind adapting your ride to the bike. It may be a poor fit if you face long steep climbs, carry heavy loads or want to vary your effort widely.
If you are unsure, test ride one, or borrow a friend’s. Pay attention to how you feel on your usual routes, not just on a flat test loop. Keep in mind that preferences differ, and that what feels charming for one rider can feel limiting for another. A thoughtful choice, combined with regular maintenance and a sensible helmet and lights, gives the best chance of enjoying the bike for years.