BMX buying guide
You want to buy a BMX bike but aren't sure which size fits your height? With the KHEbikes size guide you'll quickly find the right category – whether for kids, teens or adults.
Which BMX size matches your height?
BMX sizes are given in inches and directly correspond to rider height. Find the right category here:
For 20 inch BMX bikes, the top tube length is key for the perfect fit:
20" frame from approx. 4'7", 20.6" from approx. 4'11", 21.25" for tall riders from approx. 6'1".
Go to our 20 inch models here:
Still unsure about the size or which bike to choose? Our KHEbikes Support Team will be happy to help you anytime.
KHE BMX Bikes – Your start into the world of KHEbikes
Welcome to KHEbikes – Germany’s first BMX brand and your trusted source for high-quality freestyle BMX bikes for over 35 years. In this category, you'll find all BMX bikes at a glance: from ultra-light beginner bikes to high-end models with pro-level features. Directly from the manufacturer, no middlemen, personal support – and one promise: your perfect BMX is waiting right here.
Which BMX size is right for me?
The right BMX size is essential for safety, control, and most importantly, fun. At KHEbikes, you'll find the right wheel size for every age and height:
- 12 inch – from approx. 2'7" (80 cm) tall (approx. ages 2–5)
- 14 inch – from approx. 3'1" (95 cm) (approx. ages 4–6)
- 16 inch – from approx. 3'7" (110 cm) (approx. ages 5–8)
- 18 inch – from approx. 4'1" (125 cm) (approx. ages 7–11)
- 20 inch – from approx. 4'7" (140 cm) (from age 10, teens & adults)
We also offer different top tube lengths for our 20-inch bikes – from 19.5", 20", 20.6", 21" to 21.25".
Shorter top tubes make the bike more agile and are great for smaller or trick-focused riders. Longer top tubes offer more stability and space – ideal for taller riders or big jumps. You’ll find exact size recommendations on each product page.
Our five BMX categories – the perfect bike for every rider
We’ve divided our BMX bikes into five specialised categories to help you find the ideal model for your style, level, and needs:
1. Aluminium BMX
Lightweight yet strong bikes, ideal for kids and beginners. Thanks to the aluminium frame, tricks are easier to learn, and the bike remains easy to control. Perfect for starting freestyle BMX.
2. KHE Expert Line
The perfect choice for advanced riders. Featuring HiTen steel frames, smart geometry, and durable components, these bikes are made for progression – whether you’re riding park, street or flatland.
3. KHE PRO Line
For riders who want no compromises. These models come with Freecoasters, CNC-machined parts, 3D dropouts and high-end components. These bikes offer maximum performance for serious tricks and heavy use – made for real BMX action.
4. Flatland BMX
BMX meets art: Our flatland models like the KHE Stylus or KHE Tricky are designed for creative tricks on flat ground. Short geometry, maximum control – perfect for balance, precision and flow. KHEbikes back to the roots!
5. Limited Edition BMX
Exclusive bikes “Made in Germany”, limited in quantity, uncompromising in quality. Premium components and unique design make these models collector’s items – and extremely durable performance machines.
Which BMX discipline suits you?
- Park: For ramps, halfpipes, and skateparks – lightweight setup, high jumps.
- Street: For urban riding – rugged, often with pegs for grinds on rails and curbs.
- Dirt: For dirt jumps – solid frame, wider tyres for grip on loose ground.
- Pumptrack: Special wave-shaped tracks – smooth riding without pedalling, ideal for technique.
- Flatland: Artistic tricks on flat ground – short geometry, extreme control.
Frequently Asked Questions (FAQ)
What is a BMX bike?
A BMX is a small, agile bike with 20-inch wheels (or smaller for kids), made for tricks, jumps, and racing. It stands for action, creativity, and freedom on two wheels.
Which BMX is good for beginners?
Our Aluminium BMX bikes from the Light Line are ideal: lightweight, strong, and perfectly tailored to kids and beginners. Even better: check out our Beginner Trick tutorials for videos!
How much does a good BMX cost?
Our entry-level bikes start from around €249, mid-range models from €349, and our PRO bikes – depending on specs – go up to €1,049.
Which is better: aluminium or steel?
Aluminium is lighter and easier to control – ideal for beginners. HiTen and CrMo steel are stronger and more common in pro models.
BMX for kids – from what age?
BMX is suitable from as early as 2 years old – depending on height. Our 12-inch models are ideal from 80 cm (2'7"). From around 4–6 years, a 14-inch BMX is usually a good fit.
What is an AFFIX rotor?
The AFFIX rotor is an internal 360° rotor system that lets you spin your handlebars completely – without tangled cables. Perfect for park or flatland.
What’s the difference between tyres?
Our entry-level bikes usually come with premium Kenda tyres – durable and grippy. In the Expert and Pro classes, we often use KHE ACME tyres, made for freestyle riding. Our top models like the Strikedown or SPECTER are equipped with ultra-light KHE MAC tires – which can also be retrofitted to other 20-inch bikes if needed.
Conclusion: Your new BMX is waiting
Whether you're just starting out or perfecting your next trick – at KHEbikes, you’ll find your perfect BMX. With clear categories, accurate sizing, premium parts and decades of experience, we’re here to support you – from your first bunny hop to your backflip combo.
Start browsing, comparing, and riding – straight from the manufacturer.

Google Reviews
138 Reviews

09/01/2025
Beautiful, robust bikes and absolutely top-notch customer service. Very helpful both by phone and email, and there's a solution for every issue! It's great to still have such great and positive shopping experiences every now and then. Thank you, dear KHEbikes team!

03/01/2025
My previous review was worse. The reason for this is that I've encountered a lot of poor providers in the past, and so I simply share my negative experiences. I was contacted immediately after my first review, which I personally thought was really great. It immediately showed that the customer is their top priority. A big thumbs up for that.

29/12/2024
Great service, fast delivery, no problem exchanging. Top company!

04/09/2024
Great bikes at fair prices and great customer service!

03/08/2024
Very pleasant contact, I'm very impressed with the staff. The purchase process is easy, and the description is accurate. The order arrived very quickly, but unfortunately, there was some shipping damage, but it was replaced without any major problems.

16/02/2024
Very friendly and excellent support. @KHEbikes - thank you very much

21/12/2023
Over the years, we've had nothing but positive experiences with their products and service! Unfortunately, no race bikes or parts, which would make the product range perfect. Highly recommended!

07/12/2023
Very friendly contact, excellent advice. Even a question about the assembly of the BMX bike I purchased was answered the same day (Sunday!). That's how you retain customers long-term. I certainly won't have ordered the last bike from you. 😊 Thank you very much.

28/11/2023
Very friendly and very helpful. I contacted them via email and received a prompt response with good advice and a purchase recommendation. I'd be happy to come back.

22/09/2023

21/09/2023
Very quick, uncomplicated help. My contact, Mr. Göring, was very nice.

21/09/2023
Fast, competent, and friendly. Best service

16/09/2023
the attention is good even if you have a problem they support you so that everything goes well

18/04/2023
Despite the remote diagnosis, we received excellent advice. After a few emails and photos back and forth, the problem with the bike was identified, and we were able to fix it ourselves. Our son is incredibly happy to be able to ride a BMX again. Now that's what I call customer service! Very friendly, dedicated, and competent!

06/04/2023
Top customer service, super clear homepage :)

27/01/2023
Top-notch advice! Always happy to come back!

13/01/2023
Super fast delivery, great customer service, and very satisfied with the BMX. Thank you very much!

03/01/2023
Thanks to excellent advice over the phone, we were able to order the right spare parts for our son's BMX bike. They assured us of prompt shipping, so he was able to happily use his bike again the following week. Many thanks to Mr. Stubenrauch for the great advice!

20/08/2021
My son is thrilled with the design of his BMX bike. After I had trouble assembling it (especially the brakes), I contacted KHEbikes. Absolutely fantastic, friendly, and fast service, which solved the problem! I'm truly thrilled and can only recommend KHEbikes! 5 stars ⭐️⭐️⭐️⭐️⭐️