This is a premium carbon BMC Twostroke 01 size Large. I have installed a Rockshox Sid Ultimate SL. A set of Hope XCR brakes, these are the lightest XC brakes outhere. The bike has it's original BMC seatpost with flex technológy which adds comfort. The drive train is composed of Shimano SLX and some deore. Chain is XTR and cassette and derrailure are SLX. Cranks are deore. All sturdy parts that are hard to go throght. The wheelset is a barelly used DTswiss X1900 30mm internal with star ratchet so you can upgrade to a 54T and have that buzzzzz sound if you want. The handlebars and stem are original but have been wire brushed and look like raw alloy. There are no crack or breaks on the frame and it's in full working condition. The lettering is original chrome but decals have been placed over them so they can be removed if you with for a different look. The bike retails for $4000+ tax. With the perfect condition of the frame and so many expensive upgrades do the math.