Velopedia Bicycle Archive

2012 Sunday Spark

Original specifications.

Share owner experience

At a glance

Archive #4013887

Model year: 2012
Category: BMX
Sizes: 20.5" TT
Colors: Black Magic, Orange, Shamrock Green
In this record: 14 specifications · 18 archived images

Model history 1 other year

Browse other years

Compare side by side

Identification clues

2012 archived details

Published colors: Black Magic, Orange, Shamrock Green
Frame: Chromoly down tube

Clues, not proof of model year. Colors vary and components may have been replaced.

Original buildChromoly down tube

Manufacturer catalog

Published sizes and colors

1 size · 3 colors

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

20.5" TT

Published colors

Black MagicOrangeShamrock Green

Frameset

Frame Material	Chromoly down tube
Fork	steel

Drivetrain

Crankset	3 pc tubular cromoly
Bottom Bracket	MID BB
Cassette	9t Driver
Chain	Kmc
Pedals	Odyssey Twisted Plastic

Brakes

Brakes	Rush

Cockpit & Contact Points

Headset	Integrated 1-1/8" threadless
Handlebar	Triumph XL Replica
Stem	Sunday
Saddle	Odyssey Senior 2
Seatpost	Pivotal

Wheels & Tires

Rims	Alloy Single Wall 36h

Gearing

Original gearing is incomplete. Enter your setup to calculate ratios and cadence speeds.

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Gears Drivetrain

Front teeth Smallest rear teeth Largest rear teeth

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Rear tire marking

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

Rim diameter (BSD, mm) Tire width (mm)

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Cadence (RPM) Speed units

Gear, dimension and cadence changes update results automatically.

Gearing comparison
Measure	Original	Your setup
Lowest ratio	—	—
Highest ratio	—	—
Total range	—	—
Lowest-gear speed	—	—
Highest-gear speed	—	—

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts and service referenceQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Bottom bracket / shell: MID BB

Equipment inspection checks 8 checks based on 4 archived component groups Open equipment checksClose equipment checks

Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.

Full used-bike inspection guide →

Frame and fork

Inspect the frame and fork →

Archived: Frame: Chromoly down tube · Fork: steel

Check paint damage, vent holes and accessible internal surfaces for corrosion. Look for dents, bent tubes and cracking around welded or brazed joints.
Inspect the fork crown, blades, dropouts and visible steerer area. Check that it is straight, securely installed and free of cracks or impact damage.

Drivetrain

Check drivetrain wear →

Archived: Crankset: 3 pc tubular cromoly · Bottom bracket: MID BB · Cassette: 9t Driver · Chain: KMC

Shift through every available gear under light load. Hesitation, skipping or inconsistent indexing can reflect wear, damage, poor adjustment or mismatched replacement parts.
Measure chain wear with a compatible gauge and inspect chainring, cassette or freewheel teeth. A new chain does not rule out wear in the remaining drivetrain.
Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect crank arms, chainring bolts and pedal threads for looseness or damage.

Brakes

Inspect the brakes →

Archived: Brakes: Rush

Inspect pads and braking surfaces, check the complete cable or hose path, and confirm both controls feel consistent and return cleanly.

Controls and contact points

Archived: Headset: Integrated 1-1/8" threadless · Handlebar: Triumph XL Replica · Stem: Sunday · Seatpost: Pivotal · Saddle: Odyssey Senior 2 · Pedals: Odyssey Twisted Plastic

Apply the front brake and rock the bike to check for headset play or notchiness. Inspect the stem, handlebar and clamp zones, then confirm every fastener and control is secure.
Check that the seatpost moves for adjustment and that the saddle, post and clamp hold securely without cracks, severe corrosion or damaged hardware.

Have you owned this model?Help document firsthand fit, ride and maintenance details that may no longer be available.

This archive record has limited published detail. Share what would help another rider understand how this model fit, rode and held up over time. Velopedia reviews every contribution before publication.

Display name Required Email address Required · private Ownership Required When or how long you owned it Required Frame size Required Primary type of riding Required Rider height Optional

Overall owner experience Required · at least 120 characters0 of 120 minimum characters Would you own one again? Optional

Add fit, maintenance and buyer detailsOptional · five additional fields

Fit and sizing observations Optional Long-term strengths Optional Problems or recurring maintenance Optional Parts replaced or upgraded Optional What a used buyer should inspect Optional

Your contribution goes directly to Velopedia’s private review queue. We’ll email an optional confirmation link plus a private edit and withdrawal link, but you do not need to confirm your email before an administrator can review or approve the submission.

Already contributed? Send me a fresh private edit link

For privacy, Velopedia shows the same confirmation whether or not an experience exists.

Gallery18 images