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The 2018 GT Grunge Coaster 20" is a 20″ aluminum frame general youth bike with brakes.

Grunge Coaster 20"
Grunge Coaster 20"
GT · 2018
MSRP$199
Online Price
CategoryGeneral Youth
FrameAluminum
ForkSteel
Wheel Size20″
Wheel MaterialAluminum
Brake Type
Groupset
DrivetrainSingle-speed
Gear Range
GT Grunge Coaster 20"
12 mph
SeatpostRigid
Brand Sitewww.gtbicycles.com

Geometry

Specs
Build
Frame
20" GT LegitFit Design, Alloy
Fork
GT Hi-Ten Steel, 1" Threaded Steerer
Bottom Bracket
Steel, Ball type
Headset
Steel, 1"
Stem
2-Bolt Alloy Top, Steel Quill
Handlebar
Steel 580mm width x 176mm rise
Saddle
GT 1-piece
Seatpost
Alloy
Pedals
Jr. BMX design, resin
Grips
120mm closed end
Groupset
Crank
Forged One-Piece Type, 127mm, 32T
Cassette
16T Coaster
Chain
KMC Z410A, 1/2" x 1/8"
Wheels
Rims
Alloy, 28 Hole
Front Hub
(F) Steel, 28 Hole, 3/8" Axle, (R) Steel, 28 Hole, Coaster
Tires
GT 20 x 1.95" (F/R)
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