A Cult Biggie (Devon Smilie Signature) frame with street geometry, showcased on a white background.
The Cult Biggie Frame (Devon Smilie Signature) features street geometry with a black BMX design, striking white and red decals, and a clean white background.
The Cult Biggie Frame (Devon Smillie Signature) features a white frame with "CULT" branding on the front tube and back legs. It is designed for BMX bikes, boasting street geometry inspired by Devon Smillie's signature style.
Close-up of a black street geometry frame featuring "FFF Racing" on the head tube. The sleek design resembles the Cult Biggie Frame (Devon Smilie Signature), perfectly blending style and performance.
A close-up of the Cult Biggie Frame (Devon Smilie Signature) with street geometry.
A black Cult Biggie frame (Devon Smilie Signature) with white text on it.
A close up of a Cult Biggie (Devon Smilie Signature) black bicycle frame.
A black metal object with a hole, reminiscent of the Cult Biggie Frame (Devon Smilie Signature)'s street geometry.
A pair of Cult Biggie Frame (Devon Smilie Signature) frames on a white background.
A Cult Biggie Frame (Devon Smilie Signature) with white text.
A Cult Biggie Frame (Devon Smilie Signature) in black with white text.
Close-up image of the head tube of a white Cult Biggie Frame (Devon Smilie Signature), featuring a sticker of a person and text, emphasizing its street geometry.
Close-up of the Cult Biggie Frame (Devon Smilie Signature) reveals its black metal structure with a welded joint near the bottom bracket shell, emphasizing its rugged street geometry.
Close-up of the Cult Biggie Frame (Devon Smilie Signature) features street geometry with a seat post clamp and rear triangle elegantly engraved with the manufacturer's logo.
A Cult Biggie Frame (Devon Smilie Signature), featuring street-inspired geometry, stands without wheels, seat, or handlebars against a plain white background.

Description

The Cult Biggie is Devon Smilie's signature frame, built around street geometry: a 75.5° head angle, a short 12.9" to 13.2" back end and a tall 9.65" standover.

It is made from 100% Cult classic tubing with top and down tube gussets, a 5" integrated head tube and a mid bottom bracket shell. S-bend chainstays leave room for 2.40" tyres, and there are six top tube lengths from 20.5" to 21.8".

Features
  • Devon Smilie signature street frame. Street geometry endorsed by Devon himself: 75.5° head angle, 70° seat angle and a short 12.9" to 13.2" back end.
  • Gusseted 100% Cult classic tubing. Top and down tube gussets add strength where a street frame cops the hardest hits.
  • Room for 2.40" tyres. S-bend chainstays clear a fat rear tyre, so you can run lower pressures over rough ground.
  • Investment cast dropouts, heat treated. Cast and heat treated dropouts with a chain tensioner keep your rear wheel exactly where you set it.
  • Six top tube lengths. 20.5" through to 21.8", with a tall 9.65" standover and removable brake mounts on tapered seatstays.

Specifications
  • Sizes: 20.5", 20.75", 21", 21.25", 21.5", 21.8" top tube
  • Chainstay: 12.9" to 13.2"
  • Head tube angle: 75.5°
  • Seat tube angle: 70°
  • Standover: 9.65"
  • Bottom bracket height: 11.7"
  • Bottom bracket: Mid
  • Material: 100% Cult classic tubing, top and down tube gussets
  • Dropouts: Investment cast, heat treated, with chain tensioner
  • Brake mounts: Removable, on tapered seatstays
  • Head tube: 5", integrated
  • Seat clamp: Investment cast
  • Tyre clearance: Up to 2.40"

Cult Biggie Frame (Devon Smilie Signature)

Brand: Cult SKU:

$799.99 AUD

Or 4 payments of $199.99 AUD with

Colour - Black

Top Tube Length - 21.5

20 inch BMX frame sizing

Frames are sized by top tube length. Start with your height, then let riding style decide where in the range you land.

Rider heightTop tube
147 to 157cm19.75 to 20.25"
157 to 168cm20 to 20.5"
168 to 175cm20.25 to 20.75"
175 to 183cm20.5 to 21"
183 to 190cm and up20.75 to 21.5"

The height bands overlap on purpose. If you land in two of them, riding style breaks the tie: longer for flow, trails and transitions, shorter for technical street and park. Plenty of riders, pros included, deliberately ride longer than a chart suggests.

How to measure

Top tube is measured from the centre of the seat tube to the centre of the head tube, so it is not the length of the tube you can see. Measure your current frame that way and compare.

  • Size up for stability through trails and transitions.
  • Size down if you want the bike quick and twitchy for spins and grinds.
  • Top tube is fixed once you buy, but chainstay length, stem length, fork offset and bar position all change how the built bike feels.

Not sure? Tell us your height and how you ride, and we will tell you what we would put you on.

Read the full buying guide

20 inch BMX frame sizing

Frames are sized by top tube length. Start with your height, then let riding style decide where in the range you land.

Rider heightTop tube
147 to 157cm19.75 to 20.25"
157 to 168cm20 to 20.5"
168 to 175cm20.25 to 20.75"
175 to 183cm20.5 to 21"
183 to 190cm and up20.75 to 21.5"

The height bands overlap on purpose. If you land in two of them, riding style breaks the tie: longer for flow, trails and transitions, shorter for technical street and park. Plenty of riders, pros included, deliberately ride longer than a chart suggests.

How to measure

Top tube is measured from the centre of the seat tube to the centre of the head tube, so it is not the length of the tube you can see. Measure your current frame that way and compare.

  • Size up for stability through trails and transitions.
  • Size down if you want the bike quick and twitchy for spins and grinds.
  • Top tube is fixed once you buy, but chainstay length, stem length, fork offset and bar position all change how the built bike feels.

Not sure? Tell us your height and how you ride, and we will tell you what we would put you on.

Read the full buying guide
$799.99 AUD

Price match request

Cult Biggie Frame (Devon Smilie Signature) - Black / 21.5

$12.99 flat-rate shipping Australia-wide

Express from $21.99

Free in-store pickup - Brisbane

Availability

20.52121.2520.7521.5
Black
White
Magnesium Black (Max Vu)
Matte Raw

● In stock at LUXBMX ● With supplier ● Preorder ○ Sold out

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