The Sunday EX Erik Elstran 20 Inch Bike is a teal BMX with a 100% chromoly frame, black handlebars, saddle, and tires, featuring Odyssey/Sunday parts—shown side view on a white background.
A teal Sunday EX Erik Elstran 20 Inch Bike with black handlebars, seat, and tires—featuring a full chromoly frame and Odyssey/Sunday parts—is parked on asphalt near a concrete skate ramp.
Close-up of the handlebars, seat, and front frame of the Sunday EX Erik Elstran 20 Inch Bike with a teal 100% chromoly frame and Odyssey/Sunday parts, shown on concrete near a skate ramp.
Close-up of a Sunday EX Erik Elstran 20 Inch Bike wheel hub marked "ODSY C5," with black spokes, turquoise Chromoly frame, and visible chain mechanism, highlighting quality Odyssey components.
Close-up of the headset with an FSA logo on a teal chromoly Sunday EX Erik Elstran 20 Inch BMX bike frame, highlighting the quality of Odyssey components.
Close-up of the Sunday EX Erik Elstran 20 Inch Bike’s turquoise fork with black "Sunday" branding, black spokes, and axle on blurred pavement. Designed for strength, this fork complements Odyssey parts on a rugged chromoly frame.
Close-up of the Sunday EX Erik Elstran 20 Inch Bike crankset, showing the chainring, crank arm, and chain with Odyssey components against a blurred background.
Close-up of the Sunday EX Erik Elstran 20 Inch Bike in turquoise with a durable chromoly frame and black lettering, highlighting the rear wheel, pedals, and seat on an asphalt surface.
A Sunday EX Erik Elstran 20 Inch Bike featuring a 100% chromoly frame and thick tires is parked on an empty paved surface near a body of water.
A Sunday EX Erik Elstran 20 Inch Bike with a 100% chromoly frame and thick tires in white and black is parked on an empty asphalt surface.
A front view of the black Sunday EX Erik Elstran 20 Inch Bike with wide handlebars, black pedals, a white logo on its 100% chromoly frame, and Odyssey Springfield Brakes, shown on an empty asphalt surface.
Close-up of a black ribbed handlebar grip with "ODSY" branding on a metal handlebar, attached to the Sunday EX Erik Elstran 20 Inch Bike, which features a 100% chromoly frame.
Close-up of the black seat with embossed branding on the Sunday EX Erik Elstran 20 Inch Bike, featuring a white 100% chromoly frame, photographed outdoors on pavement.
The Sunday EX Erik Elstran 20 Inch Bike features a silver frame, black handlebars, seat, pedals, and tires, a 100% chromoly frame, and Odyssey Springfield Brakes. Shown from the side on a white background.
Close-up of a white Sunday EX Erik Elstran 20 Inch Bike with a 100% chromoly frame, highlighting the rear wheel, pedal, and "S" logo on the head tube, parked on an asphalt surface.
Close-up of the Sunday EX Erik Elstran 20 Inch Bike, showing its 100% chromoly frame, "Sunday" logo, rear wheel, chain, crankset, and pedal in an outdoor setting.
Close-up of the Sunday EX Erik Elstran 20 Inch Bike in silver with a "100% chromoly frame, fork, handlebar" sticker, emphasizing its durability and premium build.
Close-up of a black handlebar stem with "SUNDAY" engraved, mounted on a white 100% chromoly Sunday EX Erik Elstran 20 Inch Bike frame, photographed outdoors.
Close-up of a black bike hub with spokes radiating outward, attached to a white fork on the Sunday EX Erik Elstran 20 Inch Bike.
Close-up of the Sunday EX Erik Elstran 20 Inch Bike, featuring a 100% chromoly frame with "ERIK ELSTRAN" and "ODYSSEY" branding, plus Odyssey Springfield Brakes visible near the rear wheel.
Close-up of a bicycle headset and stem, featuring the FSA logo on the headset, attached to a 100% chromoly frame from the Sunday EX Erik Elstran 20 Inch Bike.
Close-up of the crank arm on a Sunday EX Erik Elstran 20 Inch Bike’s chromoly frame, showing part of the pedal and tire.

Description

Erik is easily one of the most entertaining riders on the planet and with a brand like Sunday backing him- it's no wonder that his signature bike is absolutely epic! 100% Chromoly frame, Odyssey Springfield Brakes, Odyssey Broc Raiford Grips, Sunday Saker Cranks, Odyssey Twisted PC Pro Pedals and soo much more. This rig is dialled!

With a 100% chromoly frame, fork, and bars, the EX is a bike that is difficult to match.

Erik Elstran’s signature model pushes the envelope with a tough, pro-level, Odyssey/Sunday parts package and frame design upgrades like the EX’s removable braking hardware mean business, even when your approach to riding is all about having fun - just like Erik’s.

Follow @erikelstran.

Features
  • 100% chromoly frame, fork and bars. Erik Elstran's EX is chromoly end to end, with the Sunday signature wave down tube giving the frame its shape and strength.
  • Removable brake hardware. The Odyssey Springfield U-brake and Quik Slic cable come fitted, and the mounts come off when you want to run brakeless.
  • Sealed hubs front and rear. An Odyssey C5 cassette hub with a 9T driver spins on sealed bearings, so the wheels keep rolling with little upkeep.
  • Odyssey Stage 2 rims, 2.4" tyres. 36 spoke rims on 14g steel spokes, wrapped in Path Pro OEM tyres front and rear for grip on park and street.
  • Sunday Saker 165mm cranks. Three piece cranks on a sealed mid bottom bracket driving a 25T Sabertooth v2 sprocket, 11.7 kg all up.

Specifications
  • Size: 21" top tube
  • Frame: Sunday EX, 21" TT, 100% chromoly with wave down tube and removable brake hardware
  • Top tube: 21.0"
  • Chainstay: 13.2-13.5"
  • Head tube angle: 75°
  • Seat tube angle: 71°
  • Standover: 9"
  • Bottom bracket height: 11.5"
  • Fork: Sunday EX, 20", 100% chromoly with 2-piece steerer tube and welded pre-load, 25mm offset
  • Headset: FSA integrated conical, 1-1/8"
  • Stem: Sunday Freeze top load
  • Bars: Sunday, 100% chromoly, 2-piece, 9" rise, 29" width, 12° backsweep, 3° upsweep
  • Grips: Sunday Jake Seeley
  • Brakes: Odyssey Springfield U-brake with Odyssey Quik Slic cable
  • Brake lever: Odyssey Springfield
  • Cranks: Sunday Saker, 165mm, 3-piece
  • Bottom bracket: Sealed, mid, 19mm
  • Sprocket: Sunday Sabertooth v2, 25T, 6061 aluminium
  • Chain: KMC Z1 wide
  • Pedals: Odyssey Twisted PC Pro
  • Front hub: Sunday, 36H, low-flange, sealed, 3/8" female axle
  • Rear hub: Odyssey C5 cassette hub, 36H, 14mm male axle, 9T driver, non-drive side plastic guard
  • Spokes: 14g steel, black
  • Rims: Odyssey Stage 2, 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: 11.7 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 EX Erik Elstran 20 Inch Bike

Brand: Sunday SKU:

$1,199.99 AUD

Or 4 payments of $299.99 AUD with

Recommended Rider Height:

175cm+

Colour - Battleship Grey

Top Tube Length - 21

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
$1,199.99 AUD

Price match request

Sunday EX Erik Elstran 20 Inch Bike - Battleship Grey / 21

Metro bike shipping from $59.99

Regional and remote rates may differ

Free in-store pickup - Brisbane

Availability

21
Battleship Grey
Gloss Billiard Green

● 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