Velopedia Bicycle Archive

2009 Scott Contessa JR 20

Original specifications: Shimano Tourney · 6-speed rear derailleur · 20" wheels.

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At a glance

Archive #17375

Model year: 2009
Category: Kids
Colors: Lime/White/Pink
In this record: 24 specifications · archived image

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Identification clues

2009 archived details

Published colors: Lime/White/Pink
Frame: 6061 Alloy
Original equipment: Mountain Mix

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

Original build6061 Alloy · Mountain Mix · 20" wheels

Manufacturer catalog

Published sizes and colors

1 color

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

Published colors

Lime/White/Pink

Frameset

Frame Construction	TIG-welded
Frame Material	6061 Alloy
Fork	RST K20, 40mm travel

Drivetrain

Component Group	Mountain Mix
Shifters	Shimano Revo
Front Derailleur	Shimano FD-TY22
Rear Derailleur	Shimano Tourney TY-18 GS
Crankset	Lasco Double, 34/42 teeth
Bottom Bracket	TH M1
Cassette	Shimano MF-ZH
Rear Cogs	6-speed, 14 - 28 teeth
Pedals	VP-580

Brakes

Brakes	Lee Chi 209 P brakes, Tektro 324A-TS levers

Cockpit & Contact Points

Headset	1 1/8" threadless VP-A71
Handlebar	Junior Uprise
Handlebar Extensions	Not included
Stem	HL-TDS-C41-8
Saddle	SCT-6 Junior
Seatpost	Scott SP-214, 26.8mm diameter

Wheels & Tires

Hubs	Formula FM-11
Rims	Jalco VP-20, 36-hole
Spokes	Ucp
Front Tire	20 x 1.75" K-831
Wheel Size	20" wheels

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

Pedal cadence

RPM

Speed units

RPM = pedal turns per minute.

Published build42/34T · 14–28T · 6-speed

Lowest1.21:1 Highest3.00:1 Total range247%

Estimated speed At 90 RPM Lowest gear6.3 mph Highest gear15.7 mph

Uses front tire 20×1.75; rear size isn’t listed.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

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 & serviceability

Find replacement parts

Original specifications

Cassette · Original

Shimano MF-ZH

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Front tire · Original

20 x 1.75" K-831 Replacement search: 20x1.75 bicycle tire Before ordering: Check rim type and tire clearance.

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Front derailleur · Original

Shimano FD-TY22

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More parts (3)Fewer parts

Rear derailleur · Original

Shimano Tourney TY-18 GS

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Seatpost · Original

Scott SP-214

26.8mm diameter

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Hubs · Original

Formula FM-11

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Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Parts and service referenceQuick reference before buying parts

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

Front tire: 20 x 1.75" K-831
Drivetrain: 6-speed
Seatpost diameter: 26.8 mm
Bottom bracket / shell: TH M1

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

2009 Scott Contessa JR 20