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Prototype - Evolving Daily

DK Step Up Complete BMX

What the checker saysnot checked

No fit check runs on a complete bike, and we will not pretend one does. A complete bike does not fill a slot in the builder, so the checker has no counterpart to compare it against and has never produced a single sentence about one.

Open it in the builder

The checker compares the dimensions listed in what we check, and what we don’t. “No conflicts found” means no conflict among those dimensions — not a guarantee that a build works. Errors mean it won’t fit; warnings mean it works but check; infos are notes.

$369.99 to $459.99 MSRP·7031 to 9922 g

What the maker states

Wheel size
Built for a 14" wheel (on 1 of 2 variants); Built for a 18" wheel (on 1 of 2 variants)
Top tube
15.5" (on 1 of 2 variants); 18" (on 1 of 2 variants)
Driver type
Driver cassette
Driver teeth
Driver 9 teeth
Sprocket teeth
Sprocket 25 teeth
Crank pieces
3-piece cranks

A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.

2 verified variants

VariantWheel sizeTop tubeBottom bracket shellPrice (MSRP)WeightSourceLast checkedBuild
Step Up 18"Built for a 18" wheel18"Bottom-bracket shell mid$459.999922 gmaker’s page2026-08-10Build with this
Step Up 14"Built for a 14" wheel15.5"Bottom-bracket shell euro$369.997031 gmaker’s page2026-08-10Build with this
What the maker states10 stated·5 not published
  • Built for a 14" wheel (on 1 of 2 variants); Built for a 18" wheel (on 1 of 2 variants).
  • Top tube 15.5" (on 1 of 2 variants); Top tube 18" (on 1 of 2 variants).
  • Driver cassette.
  • Driver 9 teeth.
  • Sprocket 25 teeth.
  • 3-piece cranks.
  • Bottom-bracket shell euro (on 1 of 2 variants); Bottom-bracket shell mid (on 1 of 2 variants).
  • Tire width 2.25 (on 1 of 2 variants); Tire width 2.4 (on 1 of 2 variants).
  • Head tube integrated-1-1/8 (on 1 of 2 variants).
  • Spindle 19mm (on 1 of 2 variants).

5 further fields the checker looks for are not published by DK, so we leave them blank rather than estimate them, and those 5 checks stay silent on this complete bmx. They are size class, rear axle, seat system, front brake mount and rear brake mount. Each is recorded as “not stated by the maker (not checked)”.

Source: each variant links the maker’s own page in the table above. Last checked 2026-08-10.

Where this sits

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