1998 Trek 2100 Zx Carbon Series

This is a bike I bought off Craigslist specifically for my wife (per her request) to use for training for triathlons and general exercise. The seller said it belonged to his wife and said she no longer rode it. The main triangle frame tubes (top, down and seat) are all comprised of carbon fiber which is epoxy bonded to the remainder of the frame which is aluminum alloy. She likes the bike very much and it is a vast improvement for her in terms of ease of ride, more efficient exercise and of course speed. Her triathlon times dropped dramatically when using this bike over the borrowed Schwinn hybrid she was previously using. Potential upgrades would be clip-in pedals and a new seat that is more ergonomic and comfortable.