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 Expert BMX Bikes – For advanced riders with high standards
The KHE Expert BMX bikes are designed for advanced riders who want to level up their skills and need a sturdy, precisely tuned bike. Featuring a high-quality HiTen steel frame, investment cast 3D dropouts, CrMo cranks and carefully balanced geometry, these models deliver maximum control for tricks, gaps and technical lines.
Bikes like the COPE, PLASM XL or Centrix FC are optimised for street, park or flatland – optionally with a Freecoaster hub, grindguard sprocket or an extra long 21.25" toptube. Many models also feature the KHE AFFIX Rotor – allowing full 360° barspins with active braking.
Frequently Asked Questions about Expert BMX Bikes
What makes the Expert line so special?
It combines pro-level components with a durable frame geometry – ideal for advanced riders who demand performance, strength and style.
What is a Freecoaster hub?
A Freecoaster hub allows you to roll backwards without pedal movement – perfect for switch tricks and rollbacks in street riding.
What’s the advantage of the AFFIX Rotor?
The KHE AFFIX Rotor allows 360° handlebar spins with the brake still engaged – perfect for park and flatland tricks.
What tricks are possible with an Expert BMX?
These bikes are ideal for barspins, tailwhips, manuals, nose pivots and grinds – depending on your setup and discipline.
How durable are Expert BMX bikes?
Thanks to CrMo cranks, MID bottom bracket, integrated headset and reinforced dropouts, they can handle hard landings with ease – built for progression!
Park, Street, Flatland, Dirt or Pumptrack – your style, your setup
The BMX scene thrives on creativity, skill and self-expression. Whether you're linking lines at the skatepark, grinding ledges or mastering flatland combos – an Expert bike gives you the gear to progress. The geometry and spec are all about control, stability and trick-friendliness.
While park riders often ride with rotor & brakes, street riders prefer a brakeless setup with Freecoaster. For flatland, pegs are essential – and we offer just the right setup for that.
Not quite at Expert level yet? Check out our Beginner Trick Videos – full of helpful tips to get started and keep progressing.
Accessories & Protection – Get your setup ready
At KHEbikes you'll also find the right accessories: handlebars, pegs, seats, sprockets or helmets & gloves – perfectly matched to your Expert setup.
Discover your Expert BMX now – maximum control, stylish design & true KHE quality for your next trick!

Google Reviews
138 Reviews

22/09/2023
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 ⭐️⭐️⭐️⭐️⭐️

09/01/2025
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!

02/08/2024
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
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
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
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

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

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

15/09/2023
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!

12/01/2023
Super fast delivery, great customer service, and very satisfied with the BMX. Thank you very much!

03/01/2023
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.