Velopedia Bicycle Archive

2011 GT Avalanche Expert

Original specifications: SRAM X9 · 9-speed · mechanical rear derailleur.

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At a glance

Archive #25033
Model year
2011
Category
Mountain
Sizes
XS, S, M, L, XL, XXL
Colors
Satin black
In this record
24 specifications
Model history 4 other years

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Identification clues

2011 archived details

Published colors
Satin black
Frame
6061-T6 aluminum
Original equipment
Mountain Mix

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

Campaign
Original build6061-T6 aluminum · Mountain Mix

Historical catalog variants

Archived sizes and colors

6 item records

Item-level catalog entries recovered from Velopedia’s original bicycle archive. They document how this model was listed historically; they do not identify the frame size associated with legacy reference geometry or indicate current availability.

Published sizes

XSSMLXLXXL

Published colors

Satin Black
View 6 archived size/color combinations
SizeColor
XSSatin Black
SSatin Black
MSatin Black
LSatin Black
XLSatin Black
XXLSatin Black

Historical catalog evidence. Exact specifications and naming may vary by market, production run or manufacturer revision.

Frameset

Frame ConstructionAluminum
Frame Material6061-T6 aluminum
ForkRockShox Sektor RL, 140mm travel

Drivetrain

Component GroupMountain Mix
ShiftersSRAM X.7
Front DerailleurShimano SLX
Rear DerailleurSRAM X.9
CranksetShimano FC-M545, 36/22t teeth
Bottom BracketShimano 2-piece
CassetteSram PG950
Rear Cogs9-speed, 11 - 34 teeth
ChainShimano CN-HG73
PedalsGT Slim Line Flat

Brakes

BrakesShimano BR-M445 brakes, Shimano BL-M505 levers

Cockpit & Contact Points

Headset1 1/8" FSA No. 11
HandlebarAll Terra AL6061 Riser
Handlebar ExtensionsNot included
StemAll Terra
SaddleWTB Devo Race
SeatpostAll Terra AL2014

Wheels & Tires

HubsAll Terra Alloy Disc
RimsAlex XD-Sport, 32-hole
SpokesStainless, 14/15ga. (2.0/1.8mm)
Spoke NipplesAlloy

Gearing

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

All published sizes36/22T · 11–34T · 9-speed
Lowest0.65:1 Highest3.27:1 Total range506%

Speed unavailable: wheel or tire size is missing or unclear.

Add your rear tire size to calculate speed
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.

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

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

Your gearing setup
Gears

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

Rear tire

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).

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.

Gear, dimension and cadence changes update results automatically.

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

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Shimano CN-HG73
Cassette · Original
Sram PG950
Brake pads · Original
Shimano BR-M445 brakes

Shimano BL-M505 levers

More parts (7)Fewer parts
Saddle · Original
WTB Devo Race
Crankset · Original
Shimano FC-M545

36/22t teeth

Front derailleur · Original
Shimano SLX
Rear derailleur · Original
SRAM X.9
Shifters · Original
SRAM X.7
Headset · Original
1 1/8" FSA No. 11
Rims · Original
Alex XD-Sport

32-hole

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.

Drivetrain
9-speed
Bottom bracket / shell
Shimano 2-piece
Campaign
Equipment inspection checks 11 checks based on 6 archived component groups Open equipment checksClose equipment checks
0 of 11 checked Progress stays in this browser for this record.

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 →

Archived: Frame: Aluminum · Fork: RockShox Sektor RL, 140mm travel

Archived: Fork: RockShox Sektor RL, 140mm travel

Archived: Group: Mountain Mix · Shifters: SRAM X.7 · Front derailleur: Shimano SLX · Rear derailleur: SRAM X.9 · Crankset: Shimano FC-M545, 36/22t teeth · Bottom bracket: Shimano 2-piece · Cassette: Sram PG950 · Rear cogs: 9-speed, 11 - 34 teeth · Chain: Shimano CN-HG73

Archived: Brakes: Shimano BR-M445 brakes, Shimano BL-M505 levers

Archived: Rims: Alex XD-Sport, 32-hole · Hubs: All Terra Alloy Disc

Controls and contact points

Archived: Headset: 1 1/8" FSA No. 11 · Handlebar: ALL TERRA AL6061 RISER · Stem: All Terra · Seatpost: All Terra AL2014 · Saddle: WTB Devo Race · Pedals: GT Slim Line Flat

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

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