Trek Rail 9.9 E-bike. Size medium or 28 inches stand over height. This bike is all carbon fiber. The frame, handlebars, cranks and wheels are all carbon fiber. Top of the line components and was voted e-bike of the year. Electronic shifting and dropper post work flawlessly. Brand new electronic derailleur. Rebuilt fork and a few upgrades over original. Excellent Maxxis tires. This bike retailed for $12,000 dollars and is a steal at $3900.