In a world where 10.2 lb production road bikes are a thing, super lightweight mountain bikes aren’t far behind. Just what does a mountain bike have to weigh to be considered
light really light? Along with 29″ wheels came slightly heavier weight weenie builds, but at this point I think it’s safe to say that anything under 16 pounds would be considered really light. Especially if it has pedals. That makes r2bike’s Opencycle 1.0 build impressive at just 15.2 lbs/6.9kg with pedals.
To get the weight down the company enlisted the help of some fairly exotic parts – get the build after the jump…
Starting with an Opencycle 1.0 frame, the front end of the bike was completed with a 3T Rigid Team Stealth fork. Cockpit choices include an MCFK stem, bar, seatpost and saddle, with stopping provided by Formula R1 Racing brakes and Ashima rotors. An interesting choice for the drivetrain includes a SRAM XX 2×10 system, instead of the ubiquitous 1x setups. However, that choice may be based around the Clavicula M3 crank complete with an SRM powermeter.
To get the 29″ wheels as light as possible they were built with Tune Prince/Princess hubs laced to AX Lightness clincher rims running Schwalbe Thunder Burt Tires. The bike is shown with Bebop stainless pedals. Total weight comes in right at 6.9 kg, or 15.2 pounds.