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.
B-Stock BMX Bikes – Discounted, inspected & ready to ride
B-grade BMX bikes are the perfect opportunity to get a high-quality KHE BMX at a reduced price – without compromising on functionality or safety. Whether it's a return, demo model or inspected used bike: each bike is thoroughly checked by our KHEbikes service team and is 100% ready to ride.
You’ll get a genuine KHE freestyle BMX with high-quality components, tested technology and full functionality – ideal for beginners, occasional riders or those looking for a second bike. Of course, B-grade items also come with the statutory warranty.
B-grade conditions – transparent & fair
- N1: Return – unused, possibly minor packaging marks
- N2: Light signs of use – assembled, possibly test ridden, technically like new
- N3: Used – technically inspected, ready to ride, with visible signs of use
Each item is listed in the shop with a condition description. You know exactly what you're getting – at a fair price with the KHE quality check.
Frequently asked questions about B-grade BMX bikes
Is a B-grade BMX safe?
Yes! All B-grade bikes are technically inspected before shipping – brakes, bearings, frame & wheels must be fully functional.
What’s the difference from new bikes?
Only the cosmetic condition: scratches, packaging damage or minimal signs of use. Technically, the bike is fully functional.
Is there a warranty on B-grade bikes?
The statutory warranty applies. If you have any issues, our service team is happy to help.
Who should consider a B-grade BMX?
Anyone looking for a budget BMX with full function – ideal for kids, as a second bike, or as a beginner setup.
Our tip: Order accessories right away
Want to upgrade your B-grade BMX? In our Parts Shop you'll find everything for your setup – from helmets & gloves to pegs, handlebars and tuning parts. Your B-grade bike can quickly become a unique freestyle BMX.
Discover now: Checked B-grade BMX bikes – heavily discounted & ready to ship.

Google Reviews
135 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!

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
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

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
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.