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DK Step Up 18" BMX Bike 2026
Regular price$459.99
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Product Description
The DK Step Up 18" is built for kids who are ready for bigger challenges but not quite ready for 20-inch wheels.
Designed with a lightweight aluminum frame and responsive geometry, it provides easy handling and control for growing riders. With sturdy components and smooth-rolling tires, it’s made to handle everything from cruising to learning new tricks. The Step Up 18" strikes the perfect balance of fun and function, offering the durability and performance your young rider needs to confidently push their limits.
Product Specs
- FRAME MATERIAL: Aluminium
- WHEEL SIZE: 18"
- TOP TUBE LENGTH: 18"
- CHAIN STAY LENGTH: 12.4"
- HEADTUBE ANGLE: 74°
- SEAT TUBE ANGLE: 70°
- FORKS: Chromoly Steerer Tube and Tapered Hi-Ten Legs
-
BARS:
- MATERIAL: Hi-Ten
- TYPE: 2-Piece
- RISE: 7.5" Rise
- WIDTH: - STEM: Alloy Top Load
- HEADSET: Integrated
- BRAKE MOUNTS: Welded Mount
- BRAKES: U-Brake
- FRONT HUB: 10mm Sealed
- FRONT RIM: Single Wall
- REAR HUB: 14mm Sealed Cassette
- REAR RIM: Single Wall
- TYRES: 2.4"
- SPROCKET: 25T
-
CRANKS:
- MATERIAL: Chromoly
- TYPE: 3-Piece
- ARM LENGTH: 140mm - BB: 19mm Mid
- PEDALS: Plastic
- SEAT: Combo Seat/Post
- GEARING: 25/9
- WEIGHT: TBC
Product Highlights
- 18" Wheels are great for riders just a bit too small to manoeuvre a full size 20" Bike (approx 3ft 4 - 4ft 4 / 100cm-130cm)
- Great for Riders who are just too small to handle a full size 20" BMX
- Built strong and lightweight
- Popular first BMX bike
- Includes sealed bearings
NEED SOME HELP CHOOSING A BMX BIKE?
We have compiled a complete BMX buyers guide to help you through the process! Keep reading to find out more about your perfect BMX bike. Here at SourceBMX we are all riders, so we can offer advice that only 100% rider-owned BMX shops can - just ask.
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BMX BIKE SIZE GUIDE
BMX bikes are measured in two ways: the size of the wheel (20” is the standard BMX wheel size), and the length of the frame which is gauged by the top tube measurement. We have also simplified for you into XS, Small, Medium, etc.Here is a guide to what size you should be looking for - note that there is some overlap in sizes, as personal preference also comes into the equation!
| Rider Height (in) | Rider Height (cm ) | Wheel Size (in) | Top Tube Length (in) |
|---|---|---|---|
| 2FT - 3FT | 60 - 90cm | 12" | 11.5" - 13" |
| 2'8" - 3'4" | 80 - 100 cm | 14" | 2.8" - 15" |
| 3FT - 3'8" | 90 - 110cm | 16" | 14.5" - 17" |
| 3'6" - 4'6" | 105 - 135cm | 18" | 17" - 18.5" |
| 4'6" - 5'1" (XS) |
135 - 155cm | 20" | 18" - 20" |
| 4'10" - 5'4" | 147 - 162cm | 20" | 20" - 20.25" (XS - S) |
| 5'2"- 5'8" | 157 - 173cm | 20" | 20" - 20.5" (S - M) |
| 5'6" - 6FT | 165 - 185cm | 20" | 20.25" - 21" (M - L) |
| 6FT + | 180cm + | 20" | 20.75" + (L - XL) |
