Black Wethepeople Prodi-G-Unit 18 Inch Custom Bike featuring thick tires, high handlebars, a single gear, and premium Eclat components, displayed on a white background.

The Wethepeople Prodi-G-Unit 18 Inch Custom Bike is photographed from the front against a white background, highlighting its handlebars, front tire, and pedals. This model features premium Eclat parts for enhanced performance and durability.

Close-up of black BMX handlebars with “WETHEPEOPLE” written in white on the crossbar, attached to a silver stem, against a plain white background—ideal for riders wanting to upgrade their Wethepeople Prodi-G-Unit 18 Inch Custom Bike or personalize their BMX setup with premium Eclat components.

Close-up of the Wethepeople Prodi-G-Unit 18 Inch Custom Bike handlebar and stem, showcasing its parts and displaying the front wheel, grips, and stem bolts against a white background.

Close-up of a black padded bicycle seat attached to the Wethepeople Prodi-G-Unit 18 Inch Custom Bike’s black BMX frame, with part of the rear wheel and tire visible in the background. The setup features Eclat parts, highlighting attention to both style and performance.

Close-up of a black bicycle pedal attached to the crank arm on the Wethepeople Prodi-G-Unit 18 Inch Custom Bike, with part of the chainring and chain visible in the background.

Close-up of the Wethepeople Prodi-G-Unit 18 Inch Custom Bike’s front wheel featuring black spokes and a black fork labeled “WTP PRODIGY.” The tire, branded “SUNDAY,” displays a recommended pressure range of 35–65 PSI. Eclat components are part of what gives the Prodi-G-Unit 18 its high-quality build and performance.

Close-up of a BMX bike wheel with black spokes, a purple metallic hub, and a black tire, set against a white background. This detailed shot highlights the premium Éclat components featured on the Wethepeople Prodi-G-Unit 18 Inch Custom Bike.

Close-up of the Wethepeople Prodi-G-Unit 18 Inch Custom Bike’s wheel hub with black spokes and a metallic blue center labeled “WTP,” featuring high-quality Éclat components.

Close-up of a BMX bike wheel showing black spokes, a metallic blue hub—possibly from the Wethepeople Prodi-G-Unit 18 Inch Custom Bike—and part of a tire, featuring premium Eclat parts for added performance.

Close-up of a Wethepeople Prodi-G-Unit 18 Inch Custom Bike crankset showing the pedal arm, chainring, chain, and crank bolt—featuring Eclat parts—on a black bike frame, photographed against a white background.

Description

We were told to build a custom and wanted to put together something sick for a younger rider that would make everyone at the spot jealous. Pretty sure we've pulled it off, too.

The Wethepeople Prodigy frame, forks and bars make a solid base for the little ripper, then we added a few pops of colour with some more WTP and Eclat parts. The classic black and polished combo with the Galactic Purple hubs really checks the boxes.

Features

Built around the WTP Prodigy. The Prodigy 18 frame, fork and bars give a younger rider a solid base sized around an 18" top tube.
Geometry that suits little rippers. A 75.5° head tube angle, 7.5" standover and chainstays adjustable from 11.75" to 12.25" keep the bike easy to move around.
Eclat and WTP parts throughout. Eclat Tibia XLT cranks, an Abyss Guard sprocket, a Wave 16 headset and Pulsar grips sit with a WTP Bomb stem and Socket post.
Galactic Purple hubs. A Wethepeople Helix front and Hybrid rear bring the colour against the black and polished parts kit.
Rolling on Salt and Sunday. Salt Summit 18 rims wrapped in Sunday Current tyres, with a Salt Plus Short Pivotal seat up top.

Specifications

Size: 18"
Frame: Wethepeople Prodigy 18
Top tube: 18"
Chainstay: 11.75" to 12.25", optimised for 11.8" with 25-9 gearing
Head tube angle: 75.5°
Seat tube angle: 71.5°
Standover: 7.5"
Bottom bracket height: 10.65"
Fork: Wethepeople Prodigy, 20mm offset
Headset: Eclat Wave 16
Stem: Wethepeople Bomb
Bars: Wethepeople Prodigy, 8" or 8.75" rise, 27" wide for 8" and 28" wide for 8.75", 10° backsweep, 3° upsweep
Grips: Eclat Pulsar
Cranks: Eclat Tibia XLT
Bottom bracket: Salt Spanish
Sprocket: Eclat Abyss Guard
Chain: Wethepeople Demand
Pedals: Wethepeople Logic
Front hub: Wethepeople Helix, Galactic Purple
Rear hub: Wethepeople Hybrid, Galactic Purple
Rims: Salt Summit 18
Tyres: Sunday Current
Seat: Salt Plus Short Pivotal
Seat post: Wethepeople Socket
Colour: Black and polished with Galactic Purple hubs

Assembly information

Your bike ships mostly assembled in the box. Finishing it takes most people 10 to 20 minutes with basic tools, and the video above walks through every step.

Fit the handlebars and line them up with the front wheel
Fit the front wheel, pedals and seat post
Check the brakes and tyre pressure before the first ride

Tools: Allen key set and a 15mm, 17mm or 19mm spanner for the pedals and axle nuts (bikes can vary between these three sizes). A socket is needed if installing pegs.

Rather have it done? Ask us about extra assembly before you order, or any local bike shop can finish the build for a small fee.

Wethepeople Prodi-G-Unit 18 Inch Custom Bike

Name: Wethepeople Prodi-G-Unit 18 Inch Custom Bike
Brand: Wethepeople
SKU: PRODI-G-UNIT
Price: 3049.99 AUD
Availability: OutOfStock

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

$3,049.99 AUD

Or 4 payments of $762.49 AUD with

Colour - Galactic Murder

Top Tube Length - 18

An 18 inch bike suits a rider of about 122 to 147cm, usually 7 to 11 years old, on an 18 to 18.5 inch top tube. It is the last step before a full size 20 inch.

Rider height	Wheel size	Top tube
60 to 91cm	12"	12 to 12.5"
81 to 106cm	14"	14 to 14.5"
96 to 122cm	16"	16 to 16.5"
122 to 147cm	18"	18 to 18.5"
147 to 157cm	20"	19.75 to 20.25"
157 to 168cm	20"	20 to 20.5"
168 to 175cm	20"	20.25 to 20.75"
175 to 183cm	20"	20.5 to 21"
183 to 190cm and up	20"	20.75 to 21.5"
160cm and up	22"	21 to 22.25"
160cm and up	24"	21.75 to 22"
160cm and up	26"	22 to 23"

Sizes overlap on purpose, so personal preference comes into it. If your rider is near 147cm and still growing, look at a 20 inch instead: it is the size they will keep riding.

How to measure

Stand your rider against a wall in the shoes they ride in, heels flat, and mark the top of their head. Measure from the floor to the mark.

Between an 18 and a 20? Take the 20. It is the size they will keep riding, and an 18 gets outgrown quickly.
They should be able to stand over the top tube with both feet flat on the ground.

Not sure? Send us their height and we will tell you what we would put them on.

Read the full buying guide