BMX Guide
Cheap vs Expensive BMX Bikes
Expensive BMX bikes buy stronger chromoly steel, sealed bearings, better heat treatment, lower weight and resale value, while cheap bikes suit casual use.
Updated 3 min read766 words
Cheap BMX bikes use heavier, weaker steel, basic or unsealed bearings and low grade parts. Expensive BMX bikes use stronger chromoly steel, sealed bearings, better heat treatment and finer details, and they weigh less. The extra money buys durability and a better ride, not just a nicer paint job. For light, casual use, a cheap bike can be fine. For hard riding, it usually costs more in the long run.
What the extra money buys
| Area | Cheaper bike | More expensive bike |
|---|---|---|
| Frame and fork steel | Hi-tensile steel | Chromoly, often heat treated |
| Weight | Heavier | Lighter |
| Bearings | Loose ball or basic sealed | Sealed cartridge throughout |
| Cranks | 1-piece or basic 2-piece | 3-piece chromoly |
| Wheels | Single wall or basic double wall | Strong double wall rims, better hubs |
| Finish | Basic paint | Better paint and welds |
| Warranty and support | Limited | Often clearer and longer |
| Resale | Low | Better on known brands |
Chromoly vs hi-tensile steel
Hi-tensile steel (often called hi-ten) is a basic carbon steel. It is cheap and easy to work with, but you need thicker tubes to make it strong, so frames end up heavy. It can bend or fatigue sooner under hard landings.
Chromoly is a steel alloy with chromium and molybdenum. It is stronger for its weight, so builders can use thinner tube walls and still get a durable frame. That is why most serious BMX frames, forks and cranks use it.
Some bikes mix the two. For example, the main frame may be chromoly while the rear end is hi-tensile. That is a common compromise at entry level. See frame geometry for how tube layout affects riding.
Heat treatment
Heat treatment is a process where a part is heated and cooled in a controlled way to improve strength. Many premium frames and cranks are heat treated. It lets the maker use thinner tubes or reduce weight while holding strength. You cannot see it, but you can often find it listed in the spec. If a seller claims heat treatment, the brand should say what is treated.
Sealed bearings
Sealed bearings are small cartridges with the grease and balls enclosed. They keep dirt out, spin smoothly and need little care. Cheaper bikes often use loose ball bearings in cups, which need regular adjustment and wear faster. Sealed bearings are used in hubs, the headset and bottom bracket on better bikes. The extra cost is small compared with the benefit.
Weight
Heavier bikes feel harder to lift, hop and spin. Entry level complete bikes often weigh around 12 to 14 kg. High end completes are usually only about half a kilogram to a kilogram and a half lighter, and some weigh about the same because they use stronger parts. Weight is not everything. A strong 12 kg bike will outlast a light but flimsy one. For most riders, strength matters more than shaving grams.
Resale value
Bikes from known BMX brands tend to hold their value better than department store bikes. A well kept bike with name parts can resell for a good portion of its price, especially if it has been cared for. Department store bikes rarely have resale value, and parts are hard to swap. If you may upgrade later, a mid range bike gives you the best value over time.
When cheap is fine
A cheap bike can make sense when:
- A child is growing fast. Kids outgrow bikes quickly, and a basic bike may be used for one or two years.
- You want to try BMX. A used bike or a low cost entry model lets you test whether you enjoy riding.
- You ride casually. Short cruises on smooth ground are gentle on a bike.
- You need a beater. A cheap bike for commuting short distances or leaving locked up can be a sensible second bike.
Even then, avoid the worst of the department store bikes. Look for a basic bike from a BMX brand or a shop. See how to choose your first BMX.
When to spend more
Spend more when you:
- Ride street, park or dirt jumps regularly.
- Weigh more than average, or ride hard.
- Plan to keep the bike for several years.
- Want to upgrade parts over time.
- Want something that keeps its value.
A simple approach
- Set a budget. Look at the bikes in the entry to mid range.
- Compare frame material, bearings and cranks.
- Choose the highest quality frame you can afford. You can upgrade grips, pedals and seats later.
- Buy from a shop or BMX brand that offers support.
- Keep receipts and look after the bike.
Related
Frequently asked questions about Cheap vs Expensive BMX Bikes
Is a cheap BMX worth buying?
It can be fine for a child, for casual riding on smooth ground or as a trial bike. It is a poor choice for jumping, ramps or street riding, where weak steel and low quality bearings fail quickly.
What is the difference between chromoly and hi-tensile steel?
Chromoly is a stronger alloy steel that allows thinner, lighter tubes. Hi-tensile (hi-ten) is cheaper, heavier steel that is fine for light use but bends or fatigues more easily.
Do expensive BMX bikes hold their value?
Bikes from well known BMX brands usually resell better than department store bikes. Condition, age and demand all matter, so prices vary.
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