Close-up of two green investment cast dropouts with bolts on a Cult Biggie Frame (Alex Kennedy Signature), set against a white background.

Close-up view of the green Cult Biggie Frame (Alex Kennedy Signature) with clean welds, investment cast dropouts, and no components attached, isolated on a white background.

Close-up view of the green Cult Biggie Frame (Alex Kennedy Signature), highlighting the bottom bracket area and chainstay junction with investment cast dropouts, set against a white background.

Close-up of the Cult Biggie Frame (Alex Kennedy Signature) in green with white lettering and visible welds, featuring investment cast dropouts, photographed against a white background.

Description

The Cult Biggie is Alex Kennedy's signature frame: a short back end, a steep 75.5° head tube and a tall 9.65" standover, in a green and brown colourway.

It is made from 100% Cult Classic tubing with top and down tube gussets, a 5" integrated head tube and mid bottom bracket shell, an investment cast seat post clamp and seat stay bridge, s-bend chainstays with room for 2.40" tyres, tapered seat stays with removable brake mounts, and investment cast heat treated dropouts with a chain tensioner. Six top tube lengths run from 20.5" to 21.8".

Features

Short back end, steep front. A 75.5° head tube angle with 12.9" to 13.2" chainstays, the short and steep setup Cult built for street.
Alex Kennedy signature colourway. Green and brown, so the frame stands out from the masses.
Gusseted Cult Classic tubing. 100% Cult Classic tubing with top and down tube gussets for increased strength.
Investment cast dropouts and clamp. Heat treated cast dropouts with a chain tensioner, plus a cast seat post clamp and seat stay bridge.
Six top tube sizes. 20.5" through to 21.8", with a tall 9.65" standover and s-bend chainstays that clear 2.40" tyres.

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
Tubing: 100% Cult Classic tubing, top and down tube gussets
Dropouts: Investment cast, heat treated, with chain tensioner
Brake mounts: Removable, on tapered seat stays
Head tube: 5", integrated
Seat clamp: Investment cast
Tyre clearance: 2.40", s-bend chainstays
Colour: Alex Kennedy signature green and brown
Note: Investment cast seat stay bridge

Cult Biggie Frame (Alex Kennedy Signature)

Name: Cult Biggie Frame (Alex Kennedy Signature)
Brand: Cult
SKU: C08-014A
Price: 799.99 AUD
Availability: InStock

Brand: Cult SKU: Click to copy the SKU and show the pick location

$799.99 AUD

Or 4 payments of $199.99 AUD with

Colour - Green

Top Tube Length - 20.75

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

Rider height	Top tube
147 to 157cm	19.75 to 20.25"
157 to 168cm	20 to 20.5"
168 to 175cm	20.25 to 20.75"
175 to 183cm	20.5 to 21"
183 to 190cm and up	20.75 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