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Bump (2010-2011), RRP £299.99

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GT says

GT's Bump is a mid-level dirt jumping and street bike. Designed to take on dirt jump tracks and urban features with equal style

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About this bike

Type	BMX
Gender/Age	Men
Production years	2010-2011
RRP	£299.99
Sizes	20.5" top tube (Frame size guide)
Colours	Black/Pink, Green/Yellow
Frame type	Rigid
Frame material	Chromoly / Steel
Frame description	Updated GT dirt design, cr-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
Gears	Single speed
Wheel Size	20"

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About GT

GT Bicycles is a large American manufacturer of road, mountain, and bmx bicycles. GT mountain bikes are often readily identifiable by the unique "triple triangle" frame design present in most hard-tail designs. Early BMX frames were also easily identifiable as the top tube seemed to bisect the seat tube and protrude beyond it by approximately an inch-and-a-half towards the rear of the frame. This innovative idea was claimed to reduce the amount of vibration transferred to the seat fr

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Specifications

Braking

Brake Caliper Front	Alloy side-pull caliper
Brake Caliper Rear	Tektro, FX340R, coil spring, melt forged aluminum U-brake
Brake Levers	Tektro, 273A, aluminum, hinged clamp

Drive

Bottom Bracket	Mid size sealed bearings, 8 spline Cr-Mo axle
Chain	KMC Z510
Crank	2010 design tubular Cr-Mo 3pc., thread-in chianwheel pin, 8 spline, single bolt clamping, 175mm / 2010 design 25T steel GT design
Freewheel	9T cassette
Pedals	GT Dirt/Street platform design, PC material, cr-mo alxe

Gearing

Gears	Single speed

General

Grips	GT Wing shroom design
Handlebar	'07 GT Pro size dirt/street dual radius bend, Cr-mo, 7.67" rise
Headset	FPD, 1-1/8" integrated, Campy sized 45x45 degree bearings, alloy top cap
Rigid Forks	2010 GT dirt/street design, Cr-Mo 1-1/8" steer, cr-mo 31.8mm blades, 6mmT. Dropouts
Saddle	Pivotal street design, GT cover
Seat Post	Pivotal alloy design, 200mmL.
Seat Release / Collar	'08 GT CNC mini design
Stem	2010 cold forged GT freestyle drop design, machined GT logo

Wheels

Hub Front	GT branded, aluminum body, sealed Mech. bearings, 3/8" Cr-Mo axle, 32 hole
Hub Rear	GT branded, alloy body, cassette with 9T one piece driver, sealed Mech., 14mm high carbon axle, 36 hole
Nipples	Brass
Rims	Alienation PBR, aluminum, 32 hole front, 36 hole rear, 31mm width
Spokes	14G
Tyres (Front & Back)	Front: Kenda K-Rad 2.125" Rear: Kenda Konxsion 2.1"
Wheel Size	20"

UK warranty

GT non suspension frames are covered against faults arising from defective production, materials and workmanship for a period of five years. Full suspension frames are covered for three years. All Jump, Freeride, Downhill, Freestyle and BMX frames are covered for two years. Other steel frames are covered for the lifetime of the product. Parts and accessories are covered against faults arising from defective production, materials and workmanship for a period of one year. Consumable parts such as tyres and chain are covered for 90 days.

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