The Black Jack is one of our new 20" aluminium bikes! It’s extremely lightweight, making it much easier to ride – perfect for younger riders.
Weighing just 22.5 lbs (10.2 kg), you won’t find a lighter freestyle bike in this price range worldwide!
In this Aluminium Edition, as the name suggests, a high-quality aluminium frame is used. Since it is reinforced in all the right places, this BMX can still handle every jump! The KHE Black Jack features our patented AFFIX Rotor, a height-adjustable seat to set the angle perfectly, and front & rear aluminium U-brakes. It also comes with top components like the Affix rotor, top load stem and the brand-new BIG400 rims (35 mm wide!). We’ve managed to reduce the weight to just 22.5 lbs, which means top handling and maximum fun!
Recommended rider height: 4'5"–5'7" (135–170 cm)
Maximum rider weight: 154 lbs (70 kg)
Suitable for: Street / Park / Dirt / Pump Track
Pegs: Suitable pegs for the Black Jack 20" are 10 mm front and 14 mm rear. We recommend the KHE COP ALU pegs.
The BMX bike is approx. 90% pre-assembled. The manual is available under “Datasheets”, and the assembly video can be found under “Video”.
| Frame: | Aluminium, Top tube: 19.5" |
|---|---|
| Top tube length: | 19,5" (495mm) |
| Fork: | HiTen |
| Handlebars: | HiTen, 2-piece |
| Stem: | Top Loader |
| Headset: | 1 1/8“, Standard headset |
| Rotor: | AFFIX |
| Brake levers: | for U-Brake |
| Crank: | Very robust OPC (one piece) 165mm |
| Bottom bracket: | US-BB Loose Ball |
| Chainring: | 36T |
| Chain: | YBN |
| Pedals: | Very flat and lightweight 1/2" PVC pedals |
| Brake type: | V-brake |
| Saddle: | padded, adjustable tilt |
| Seat clamp: | aluminium black |
| Brake: | U-Brake |
| Front wheel: | KHE BIG400 rim, Prism 36 H hub, 10mm axle |
| Rim: | KHE BIG400 |
| Rear wheel: | KHE BIG400 rim, 36 spoke hub, 16T freewheel, 14mm axle |
| Tyres: | 20" x 2,10" |
| Material: | Aluminum |
| Tire size: | 20 inch |
| Category: | BMX Freestyle |
| Size: | 20 "; 4'7" - 5'7" in |
| Colour: | Matt black |
| Weight: | 22.49lbs / 10,2kg |
| Model Year: | 2023 |
| Sale: | Sale |
Usage Instructions:
This BMX bike is designed for sporty and trick-based use, e.g., on skateparks, pump tracks, and similar surfaces.
Do not use the BMX bike on wet, slippery, or icy surfaces.
Not suitable for road traffic unless the bicycle is equipped with appropriate lighting and reflectors according to StVZO.
Maximum user weight: 70kg.
Safety Instructions:
Always wear a suitable helmet and protective gear (knee, elbow, and wrist guards).
Check all screws, connections, and components for secure fastening before each ride.
Regularly inspect the condition of the brakes and tires.
Ensure that the chain is properly tensioned and shows no visible damage.
Do Not Modify: Do not perform modifications such as drilling, cutting, or making any other changes to the BMX bicycle. Warranty is void in case of improper use.
Maintenance and Care:
Clean the BMX bike regularly and protect it from rust.
Use only original spare parts. Perform maintenance as outlined in the user manual.
Replacement Due to Wear: Regularly check components such as handlebars, frame, and fork of the BMX bike for cracks, deformations, or hairline fractures, especially at welds. Replace components of the BMX bike immediately if cracks or damage are found.
KHE GmbH & Co. KG
Am Hambiegel 3
76706 Dettenheim
Germany
service@khebikes.de
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