GT Bump Dirt BMX 2011
The GT Bump has a cro moly frame and is a mid-level bike in the GT dirt/street line of BMXs. This is a BMX designed to keep its feel no matter what terrain. The dirt/street handlebars that come stock on the GT Bump are Pro size, to give good control.The Kenda K-Rad 2.125" front tire and Kenda KoRolla 2.1" rear tire help in this cause, as they are made to withstand rough tracks. The wheels have a 14mm axle at the rear with 36 spokes, and the front wheel is lighter with 3/8" axle and 32 spokes. The hubs are GT with Alienation PBR rims. So the wheels are pretty tough. The GT Bump also comes equipped with pedals and cranks designed for jumping. The cranks have 8 splined cro moly axles with mid-size bearings. The pedals are GT dirt/street design, made of alloy with cro moly axles which are designed to perform safely under tough conditions.
TYPE OF FRAME GT Dirt Design frame with Cr-mo main tubes and stays, integrated 1-1/8" headtube, 19mm CS, DT gusset, Mid BB, and seat stay mounted U-brake.
FORK GT dirt/street design, Cr-Mo 1-1/8" steer, cr-mo 31.8mm blades, 6mmT. Dropouts
CRANKSET CHAINWHEEL GT tubular Cr-Mo 3pc., 8T spline, 175mm / 25T steel GT design
BOTTOM BRACKET Mid size sealed bearings, 8 spline Cr-Mo axle
COG SET 9T cassette
CHAIN KMC Z510
RIMS Alienation PBR, pinned aluminum, 32F/36R,
FRONT HUB GT aluminum body, 3/8" Cr-Mo axle, 32 hole
REAR HUB GT alloy body, 4 sealed bearing cassette with 9T one piece driver, 14mm hi-carbon axle, 36 hole
SPOKES 14G
NIPPLES Brass
TIRES Front: Kenda K-Rad 2.125" Rear: Kenda KoRolla 2.1"
PEDALS GT Dirt/Street platform design, Alloy material, cr-mo alxe
REAR BRAKE Tektro, FX340R, coil spring, melt forged aluminum U-brake
BRAKE LEVERS Tektro, 273A, aluminum, hinged clamp
HANDLEBAR GT Pro size dirt/street Steel, 8" rise
STEM GT freestyle drop design, machined GT logo
HEADSET 1-1/8" integrated, Campy sized 45x45 degree bearings, alloy top cap
GRIPS GT Wing shroom design
SADDLE Pivotal street design, GT cover
SEAT POST Pivotal, 25.4 x 200mmL.
SEAT CLAMP Alloy Single bolt slim
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