Factor O2 52cm - 6.3kg Ultra-Light Climbing Bike | Premium Upgrades | Dura-Ace | Reynolds RZR

2019 Factor O2 52cm - 6.3kg Ultra-Light Climbing Bike | Premium Upgrades | Dura-Ace | Reynolds RZR For sale is my 2019 Factor O2 road bike, size 52cm, originally purchased from The Pro’s Closet in 2020. This bike has been meticulously upgraded with premium components to achieve an ultra-lightweight 6.3kg build, making it a dream machine for climbing. It has been used primarily on an indoor trainer and for climbing rides, as I own multiple bikes. Selling due to space constraints after adding a new bike to my collection. Premium Upgrades & Key Features: Frame & Fork: Factor O2 Carbon Fiber Groupset: Shimano Dura-Ace R9100 11-speed Brakes: eeBrakes Premium Rim Brakes – ultra-light & powerful Wheelset: Reynolds RZR 46 Tubular (980g) – high-performance, featherweight aero wheels Handlebar & Stem: Black Inc Carbon Integrated (40cm bar, 100mm stem) Drivetrain: Absolute Black Oval Outer Chainring (52/39T, 172.5mm crank arms) Bottom Bracket: BB Infinite – game-changer for stiffness & efficiency Pulley System: CeramicSpeed OSPW – reduced friction, smoother shifting Saddle: 3D-printed Björn Setka Saddle – ultra-light & ergonomic for comfort Seatpost: Björn Carbon – premium lightweight component Tires: Continental Competition Tubular – race-level grip & performance Cabling: Jagwire Road Pro-Slick Polished for crisp shifting Custom Paint: Latte + Bare Carbon - original color was black Condition & Ride Quality: Well-maintained, top-tier mechanical condition Minimal cosmetic wear: A few tiny pebble chips, barely noticeable & easily touched up Ultra-responsive, stiff, and smooth – replacing the BB Infinite bottom bracket significantly improved stiffness and power transfer A true climber’s bike (KOMs collector)– incredibly light, efficient, and built with only the best components This is a rare and high-performance build for serious riders looking for the ultimate lightweight machine. Feel free to message me with any questions. Serious buyers please