Shopping Cart

Loose Cycles

GT Timberline 26" gravel bike


There's an ever growing spare parts bin of functional bike components here at Loose Cycles and from time to time we get our hands on a bike frame worthy of resurrection. We build our (re)Used Bikes from the ground up using a mix of new and old parts that still have years of riding ahead of them. These bikes are all built to last and bring joy to their new owners!

The GT Timberline with its iconic triple triangle frame is a fun and versatile steel mountain bike that we have rebuilt into a gravel bike. A wide range of gears makes it a great bike for longer rides, bikepacking trips and touring. It can also be used as a commuter bike and has plenty of clearance around the tires for mudguards as well as all the mounting points you need for equipping it with touring racks. 



  • Seat tube (ctc) : 51cm
  • Top tube (ctc) : 57cm
  • Tubeset : CR-MO butted tubing
  • Country of origin : Taiwan
  • Bottom bracket threading : British
  • Steerer/headset threading : 1 1/8"


  • Crankset : Trek Icon Graphite Series 32t / 42t
  • Front derailleur : Shimano Deore LX 2 speed
  • Rear derailleur : Shimano Deore LX 9 speed
  • Shifters : Shimano Dura-Ace 2x9 speed
  • Cassette : 9 speed / 11-34t
  • Brakes : Avid Single Digit V-Brakes
  • Brake levers : Shimano Dura-Ace STI
  • Handlebar : Marin Gravel
  • Stem : Force
  • Headset : VP One sealed bearing
  • Wheelset : Shimano M475 hubs / Bontrager Camino rims
  • Tyres : Sim Works Super Yummy 26x2.22
  • Bar tape : Grepp cotton bar tape
  • Saddle : Marin
  • Seatpost : Ergotec 29.4mm