100 miles sounds suspect. Use your eyes, check the tire wear, check the chain for wear (bring a chain checker or learn how to measure the chain with a ruler for wear), check the hub and bottom bracket bearings run freely without noise, check for cracks in the frame (bring a high power flashlight) this is very important with carbon.
GT Zaskar LT – это дитя нового времени, взявший скорость точность управления ближайшего родственника, переднюю подвеску и мягкие, почти кошачьи повадки лучшего друга трейлов Sensor, и не забывший
Geometry. A lightweight, stiff frame to fit 24" wheels. Built to help you get the holeshot and take the win. Sizes. 24". Frame. GT Speed Series MK7 Elite Race Design, 6061-T6 AL, Alloy Formed and Butted Speed Metal Tubes, AL CNC/Forged Quick Change Disc Dropout SyStem, BB86, Taper 1-1/8" to 1-1/2" Integrated H/T. Brakes.
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