Vintage Klein Quantum Road Bike - Plum Crazy

Up for sale is a beautiful Klein Quantum in one of the brand’s most iconic finishes. This frame is a masterclass in 1990s aluminum engineering, featuring Klein’s signature oversized tubing and smooth, filled welds that look like liquid metal. The paint is a stunning iridescent purple that shifts to a deep bronze/burgundy depending on the light—a true head-turner on the road. This bike is a perfect blend of vintage American craftsmanship and reliable modern performance, making it an excellent choice for collectors or those looking for a fast, unique daily rider. Specifications Frame: Klein Quantum (Gradient Aluminum) Size: 56cm Drivetrain: Shimano 105 9-Speed Groupset Crankset: Triple chainring setup (perfect for climbing) Wheels: Bontrager Select Wheelset Tires: Hutchinson Fusion Cockpit: TTT Stem with Bontrager bars and seatpost Saddle: Selle Italia Condition Notes The bike is in very good mechanical and cosmetic shape for its age. The paint still holds a deep, metallic luster. As shown in the detail photos, there is one cosmetic scratches , which is common for these thin-walled performance frames, but no dents or structural issues. Missing one of The shifter hood but function smoothly.