Sunday Forecaster 20 Inch Bike (2023) / Matte Maroon / 20.75TT
The Sunday Forecaster 20 Inch Bike is shown in profile on a white background, featuring a purple frame, sturdy chromoly build, and black handlebars, seat, and tires.
The Sunday Forecaster 20 Inch Bike, featuring a red chromoly frame with black tires, handlebars, and seat, is parked on an asphalt surface.
A purple Sunday Forecaster 20 Inch Bike with black handlebars and tires is parked on asphalt near yellow poles and a closed garage door.
A Sunday Forecaster 20 Inch Bike in red, featuring black handlebars, seat, and tires, is parked on a paved area with office buildings and trees in the background.
Close-up of the Sunday Forecaster 20 Inch Bike’s red chromoly frame with "Sunday" branding, Odyssey parts, chain, pedals, and rear wheel visible; blurred buildings and trees in the background.
Close-up of the Sunday Forecaster 20 Inch Bike's red chromoly frame with "FORECASTER" on the seat tube, showcasing detailed rear wheel and frame features of this BMX bike.
Close-up of the Sunday Forecaster 20 Inch Bike’s chromoly BMX frame with "Forecaster" printed on it, Odyssey parts, visible rear wheel, pedals, and part of the handlebars.
Close-up of the Sunday Forecaster 20 Inch Bike tire, showing Odyssey parts, a visible valve stem and spokes, and the recommended pressure range of 35-65 PSI.
Close-up of a bicycle rear wheel hub with black spokes and chain, showing the manufacturer's logo on the hub, attached to a red chromoly Sunday Forecaster 20 Inch Bike.
Close-up of a black seat with embossed branding on a purple chromoly frame from the Sunday Forecaster 20 Inch Bike, showing part of the tire and logo.
Close-up of the black BMX stem and handlebars with "Sunday" engraving, mounted on a red Sunday Forecaster 20 Inch Bike—crafted from chromoly and equipped with quality Odyssey components.
Close-up of the Sunday Forecaster 20 Inch Bike wheel, featuring black spokes and a purple fork with "Sunday" in white text, built with quality Odyssey parts.
Front view of a red Sunday Forecaster 20 Inch BMX bike with black handlebars, seat, and pedals on a paved surface—built with reliable Odyssey parts for top performance.
Close-up of a black ribbed handlebar grip with "ODSY" embossed, attached to a red Sunday Forecaster 20 Inch Bike, highlighting quality Odyssey parts.
Close-up of a black Odyssey bicycle pedal mounted to the crank arm of a chromoly Sunday Forecaster 20 Inch Bike, with part of the frame and asphalt ground in view.
Close-up of the Sunday Forecaster 20 Inch Bike in purple, showcasing a metallic "100% Chromoly Frame" sticker label that highlights the bike’s strength and style.
Close-up of a black hub with "SUNDAY" on it, black spokes, and part of the purple chromoly frame of the Sunday Forecaster 20 Inch Bike, highlighting high-quality BMX components.
Close-up of a black Sunday Forecaster 20 Inch Bike wheel with "ODYSSEY" rim branding on asphalt, highlighting the quality components.
Close-up of a black bicycle handlebar grip with "ODSY" text, attached to a purple Sunday Forecaster 20 Inch Bike frame in the background, featuring quality Odyssey parts.
A close-up of the handlebars and front chromoly frame of the purple Sunday Forecaster 20 Inch Bike with Odyssey parts, set against an empty asphalt background.
Close-up of a black handlebar stem with "SUNDAY" engraved on it, attached to a purple Sunday Forecaster 20 Inch Bike featuring Odyssey parts.
Close-up of a Sunday Forecaster 20 Inch Bike's red frame with a "100% Chromoly Frame" sticker, plus black tire and Odyssey parts in the background.
Close-up of a black bicycle hub with the "Shadow" logo, spokes radiating outward, and a blurred gray background—ideal for the Sunday Forecaster 20 Inch Bike.
Close-up of a black seat with embossed branding, mounted on a Sunday Forecaster 20 Inch Bike with a red chromoly frame, photographed outdoors on pavement.

Highlights

  • 100% chromoly frame
  • Odyssey Clutch v2 freecoaster
  • 170mm three piece chromoly cranks
  • Odyssey Stage 1 rims, sealed hubs

Description

Your forecast is looking sunny with one of these ripping sleds from the legends at Sunday! Built tough with a 100% chromoly frame and three piece cranks. Also included are loads of parts from Sunday and Odyssey resulting in one sweet ride.

The Forecaster is a model that rides, feels and looks like a pro-level bike with a full 100% chromoly frame.

You’ll find other Sunday Signature spec’d design cues like the Broc Raiford grips, combined with incredible parts like an Odyssey clutch v2 freecoaster hub, Odyssey Twisted Pro pedals, and Path Pro tyres.

A truly dialled bike for every style of riding.

Features
  • 100% chromoly frame. Full chromoly with an integrated 1-1/8" head tube and removable brake hardware, so it rides and feels like a pro-level bike.
  • Odyssey Clutch v2 freecoaster. On the Matt Maroon build, roll backwards with the cranks still for fakies and switch riding.
  • 170mm three piece chromoly cranks. Three piece chromoly on a sealed mid bottom bracket, driving a 25T Sabertooth v2 sprocket and a KMC Z1 chain.
  • Odyssey Stage 1 rims, sealed hubs. 36 spoke rims on 14g steel spokes with sealed bearings front and rear, wrapped in 2.4" Path Pro OEM tyres.
  • Sorted Sunday and Odyssey cockpit. A Sunday Freeze front load stem, four piece bars, Odyssey Broc Raiford grips and Springfield brakes, 12.15 kg all up.

Specifications
  • Size: 20.75" top tube
  • Frame: Sunday Forecaster, 20.75" TT, 100% chromoly with integrated 1-1/8" head tube and removable brake hardware
  • Top tube: 20.75"
  • Chainstay: 13.2-13.5"
  • Head tube angle: 75.5°
  • Seat tube angle: 71°
  • Standover: 9"
  • Bottom bracket height: 11.7"
  • Fork: Sunday Forecaster, 20", 2-piece chromoly steerer tube with welded pre-load
  • Headset: FSA integrated conical, 1-1/8"
  • Stem: Sunday Freeze front load, 48mm
  • Bars: Sunday, 4-piece, 9" rise, 29" width, 12° backsweep, 3° upsweep
  • Grips: Odyssey Broc Raiford
  • Brakes: Odyssey Springfield U-brake with Odyssey Quik Slic cable
  • Brake lever: Odyssey Springfield
  • Cranks: 170mm, 3-piece, chromoly
  • Bottom bracket: Sealed, mid, 19mm
  • Sprocket: Sunday Sabertooth v2, 25T, steel
  • Chain: KMC Z1 wide
  • Pedals: Odyssey Twisted PC Pro
  • Front hub: Sunday, 36H, low-flange, sealed, 3/8" female axle
  • Rear hub: Matt Maroon: Odyssey Clutch v2 freecoaster, 36H, 14mm female axle with 9T driver, RHD, non-drive side plastic guard. Matt Grape Soda: Sunday, 36H, sealed, 14mm male axle with 9T driver
  • Spokes: 14g steel, black
  • Rims: Odyssey Stage 1, 20", 36H
  • Tyres: Odyssey Path Pro OEM, 20 x 2.4" (front and rear)
  • Seat: Sunday Badge, Pivotal
  • Seat post: Sunday Pivotal
  • Seat clamp: Sunday
  • Weight: 12.15 kg (with brakes)
  • Note: Alloy cap: Sunday M16, aluminium

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.

Sunday Forecaster 20 Inch Bike

Brand: Sunday SKU:

$1,099.99 AUD

Or 4 payments of $274.99 AUD with

Recommended Rider Height: 168 cm and taller

Colour - Matte Maroon

Top Tube Length - 20.75

20 inch BMX sizing

A 20 inch bike is the standard adult BMX and suits riders from about 147cm up. At this wheel size the top tube is what changes the fit, so pick that by height.

Rider heightWheel sizeTop tube
60 to 91cm12"12 to 12.5"
81 to 106cm14"14 to 14.5"
96 to 122cm16"16 to 16.5"
122 to 147cm18"18 to 18.5"
147 to 157cm20"19.75 to 20.25"
157 to 168cm20"20 to 20.5"
168 to 175cm20"20.25 to 20.75"
175 to 183cm20"20.5 to 21"
183 to 190cm and up20"20.75 to 21.5"
160cm and up22"21 to 22.25"
160cm and up24"21.75 to 22"
160cm and up26"22 to 23"

Sizes overlap on purpose, so personal preference comes into it. If you land in two bands, riding style breaks the tie: longer for flow, trails and transitions, shorter for technical street and park.

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.

Top tube is measured from the centre of the seat tube to the centre of the head tube, so it is not the same as the length of the tube you can see.

  • A 20 inch bike is the standard adult BMX and most riders end up there, so do not size a tall child down to a smaller wheel.
  • 22, 24 and 26 inch bikes are adult bikes with a bigger wheel, not bigger frames for taller riders.
  • 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, but stem length, fork offset and bar position all shift how roomy the bike feels once you are on it.

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

Read the full buying guide

20 inch BMX sizing

A 20 inch bike is the standard adult BMX and suits riders from about 147cm up. At this wheel size the top tube is what changes the fit, so pick that by height.

Rider heightWheel sizeTop tube
60 to 91cm12"12 to 12.5"
81 to 106cm14"14 to 14.5"
96 to 122cm16"16 to 16.5"
122 to 147cm18"18 to 18.5"
147 to 157cm20"19.75 to 20.25"
157 to 168cm20"20 to 20.5"
168 to 175cm20"20.25 to 20.75"
175 to 183cm20"20.5 to 21"
183 to 190cm and up20"20.75 to 21.5"
160cm and up22"21 to 22.25"
160cm and up24"21.75 to 22"
160cm and up26"22 to 23"

Sizes overlap on purpose, so personal preference comes into it. If you land in two bands, riding style breaks the tie: longer for flow, trails and transitions, shorter for technical street and park.

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.

Top tube is measured from the centre of the seat tube to the centre of the head tube, so it is not the same as the length of the tube you can see.

  • A 20 inch bike is the standard adult BMX and most riders end up there, so do not size a tall child down to a smaller wheel.
  • 22, 24 and 26 inch bikes are adult bikes with a bigger wheel, not bigger frames for taller riders.
  • 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, but stem length, fork offset and bar position all shift how roomy the bike feels once you are on it.

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

Read the full buying guide

Sunday Forecaster 20 Inch Bike - Matte Maroon / 20.75

$1,099.99 AUD

Price match request

  • Arrives mostly assembled. Most people finish it in 10 to 20 minutes.
  • Pay in 4 with PayPal on orders under $2,000: 4 interest-free payments of $274.99, one every two weeks, with no late fees. How it works

Bike shipping from $39.99All rates

Free in-store pickup - Brisbane

Availability

20.75
Matte Maroon
Matte Grape Soda

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

Need Help ?

Chat with the LUXBMX crew!

Email Us Call Us SMS Us
  • 100% Australian owned
  • Australia's largest BMX range
  • Hassle-free returns
  • Fast trackable shipping

Price match request

Seen it cheaper somewhere else? Send us the link and we'll take a look.