1988 GT Timberline
When mountains grow so steep even the trees have a tough time standing, you've reached the timberline. You'll need a special bike to take you over the peak, through the forest, and back to civilization. Shimano EXAGE Trail derailleurs shift the Timberline through 18 earth-churning and pavement-pounding speeds. Sealed mechanisms prevent mountain mud and city slime from slowing down your ride. No bike in its class offers more All-Terra capability than the GT Timberline.
Description
When mountains grow so steep even the trees have a tough time standing, you’ve reached the timberline. You’ll need a special bike to take you over the peak, through the forest, and back to civilization. Shimano EXAGE Trail derailleurs shift the Timberline through 18 earth-churning and pavement-pounding speeds. Sealed mechanisms prevent mountain mud and city slime from slowing down your ride. No bike in its class offers more All-Terra capability than the GT Timberline.
Technical specification
Geometry
- Sizes
- 16", 18", 20", 22", 18.5" Ladies
- Head tube angle
- 70
- Seat tube angle
- 74
Frame & Fork
- Frame material
- Chromoly, Hi-Ten Steel
- Frame
- Ishiwata Chromoly Main Frame, Hi-Tensile Steel Stays, Forged Dropouts, Top Tube Flattened and Tapered, Reinforcement Sleeve at Top and Bottom of Head Tube
- Fork
- Unicrown with 1¼" Round-Oval-Round Blades, Hi-Tensile with Forged Dropouts, Painted
Drivetrain
- Crankset
- Shimano EXAGE Trail M350 w/BioPace, 48/38/28T, Anatomic Sizing
- Bottom bracket
- BB-611 NW, Sealed Mech
- Chain
- Shimano SIG, Blk
- Freewheel
- Shimano MF-Z0H25, 14/16/18/21/24/28T
- Shifters
- Shimano EXAGE Trail M350 w/SIS and Friction Modes
- Pedals
- Victor Yu High Impact Nylon w/Japanese Axle
- Derailleurs
- Shimano EXAGE Trail M350 Front, Shimano M350 SIS Rear
- Front derailleur
- Shimano EXAGE Trail
- Rear derailleur
- Shimano EXAGE Trail rear derailleur with SIS
Wheels
- Rims
- Araya MP-22 Alloy, Silver Anodized, 26 x 1.50
- Tires
- Ritchey Quad, 26 x 1.50, Skinwall
- Spokes
- UCP
- Hubs
- Jou Yu Alloy Small Flange Sealed Mech QR Front, Jou Yu Small Flange Sealed Mech Rear w/Chromo Solid Axle
Cockpit & contact
- Handlebar
- Hi-Tensile, Flat Tapered, Black, 600mm Width
- Stem
- GT All Terra II, Chromoly w/Roller, Anatomic Sizing
- Grips
- American made KME/GT anatomical grips
- Headset
- 8002 GW Sealed Mech, Black
- Saddle
- GT All Terra, Pigskin Look
Brakes
- Brakes
- Shimano EXAGE Trail M350 Cantilever Front w/M451 U-Brake Rear, 2.0mm Wire, 6.0mm Housing
