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BookmarkGT’s Bump is a mid-level dirt jumping and street bike. Designed to take on dirt jump tracks and urban features with equal style
| FRAME | 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 |
|---|---|
| FORK | 2010 GT dirt/street design, Cr-Mo 1-1/8″ steer, cr-mo 31.8mm blades, 6mmT. Dropouts |
| SIZES | 20 |
| CRANKSET CHAINWHEEL | 2010 design tubular Cr-Mo 3pc., thread-in chianwheel pin, 8 spline, single bolt clamping, 175mm / 2010 design 25T steel GT design |
| BOTTOM BRACKET | Mid size sealed bearings, 8 spline Cr-Mo axle |
| CHAIN | KMC Z510 |
| RIMS | Alienation PBR, aluminum, 32 hole front, 36 hole rear, 31mm width |
| FRONT HUB | GT branded, aluminum body, sealed Mech. bearings, 3/8″ Cr-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 |
| NIPPLES | Brass |
| TIRES | Front: Kenda K-Rad 2.125″ Rear: Kenda Konxsion 2.1″ |
| PEDALS | GT Dirt/Street platform design, PC material, cr-mo alxe |
| FRONT BRAKE | Alloy side-pull caliper |
| REAR BRAKE | Tektro, FX340R, coil spring, melt forged aluminum U-brake |
| BRAKE LEVERS | Tektro, 273A, aluminum, hinged clamp |
| HANDLEBAR | 07 GT Pro size dirt/street dual radius bend, Cr-mo, 7.67″ rise |
| STEM | 2010 cold forged GT freestyle drop design, machined GT logo |
| HEADSET | FPD, 1-1/8″ integrated, Campy sized 45×45 degree bearings, alloy top cap |
| GRIPS | GT Wing shroom design |
| SADDLE | Pivotal street design, GT cover |
| SEAT POST | Pivotal alloy design, 200mmL. |
| SEAT CLAMP | 08 GT CNC mini design |
