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2011 GT Bump

Launched at $379

Own a 2011 GT Bump?

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What a used one is worth

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New

$92

$48 to $123

Like new

$87

$45 to $117

Excellent

$83

$43 to $111

Good

$69

$36 to $93

Fair

$51

$26 to $68

For parts

$28

$14 to $37

From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.

Overview

Brand
GT
Model family
Bump
Model year
2011
Category
BMX · freestyle
Frame material
steel
Sizes
20" WHEEL / 20.5" TOP TUBE
Wheel size
20
Launch MSRP (US)
$379

Drivetrain

Speeds
1
Chainrings
1
Electronic
false
Total gears
1

Build

Fork
2010 GT dirt/street design, Cro-Mo 1-1/8" steer, Cro-Mo 31.8mm blades, 6mmT. Dropouts
Stem
2010 cold forged GT freestyle drop design, machined GT logo
Tires
Front: Kenda K-Rad 2.125"; Rear: Kenda Konxsion 2.1"
Brakes
front: Alloy Side-Pull Caliper; rear: Tektro, FX340R, coil spring, melt forged Aluminum U-brake; levers: Tektro, 273A, Aluminum, hinged clamp
Saddle
Pivotal street design, GT cover
Wheels
rims: Alienation PBR, Aluminum, 32 hole front, 36 hole rear, 31mm width; front hub: GT branded, Aluminum body, sealed Mech. bearings, 3/8" Cro-Mo axle, 32 hole; rear hub: GT branded, alloy body, cassette with 9T one piece driver, sealed Mech., 14mm high carbon axle, 36 hole; spokes: 14G
Cassette
9t Cassette
Crankset
2010 design tubular Cro-Mo 3-piece., thread-in chianwheel pin, 8 spline, single bolt clamping, 175mm / 2010 design 25T steel GT design
Seatpost
Pivotal alloy design, 200mm
Handlebar
`07 GT Pro size dirt/street dual radius bend, Cro-Mo, 7.67" rise

Spec from GT's official 2011 catalog (PDF), specification chart on PDF page 148, column "BUMP"; the catalog prints no prices. Fix round 2026-10-21: every row of this column re-read with a third reader (pdftotext -table, which keeps each row label level with its cells); values that the earlier two reader pass merged with a neighbouring column or dropped are now as printed. Wheel size from the page's size or name row (the tire row gives no diameter). Frame: Updated GT Dirt Design, Cro-Mo Main Tubes and Stays, Integrated 1-1/8" Headtube, New 19mm CS, New DT Gusset, New SS and CS Bridge, New Dropout, Mid BB, Seat Stay Mounted U-brake Bottom bracket: Sealed bearing "Mid Size" BB set, Cro-Mo 8 Spline Axle Chain: KMC Z510 Headset: FPD, 1-1/8" integrated, Campy sized 45x45 degree bearings, alloy top cap Pedals: GT Dirt/Street platform design, PC material, Cro-Mo alxe Grips: GT Wing shroom design Seat clamp: `08 GT CNC mini design Nipples: Brass MSRP $379 read from the product's own price block (under the model name) on GT's 2011 site product page "Bump - Matte Green", captured 2011-05, inside the 2011 launch window (fix round 2026-10-21).

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