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Our test ride shows the Vuelo Velo 8 to be light and lively with an unusually rigid rear end - so much so that we wished for a stiffer front end to match.
Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Vuelo Velo has opted for a straight 1 1/8" head tube for its new 8.
Photo credit © James Huang/Future Publishing

Vuelo Velo uses unique head tube badges for each model.
Photo credit © James Huang/Future Publishing

The Cane Creek AER headset uses a Norglide bushing up top instead of conventional ball bearing.
Photo credit © James Huang/Future Publishing

The lower headset cup uses a more typical cartridge ball bearing.
Photo credit © James Huang/Future Publishing

Fairwheel Bikes is a shop in Arizona that specializes in highly customized builds.
Photo credit © James Huang/Future Publishing

The Mad Fiber hubs are made wholly of bonded carbon fiber save for the bearings and axle assembly.
Photo credit © James Huang/Future Publishing

The slick internal battery is housed inside the seatpost.
Photo credit © James Huang/Future Publishing

Shimano's Dura-Ace Di2 electronic group has opened up new doors for custom builders looking to exploit the unique wire routing possibilities.
Photo credit © James Huang/Future Publishing

The seat tube and seat stays are gently curved.
Photo credit © James Huang/Future Publishing

Tufo S3 Lite tubulars are mounted on the Mad Fiber carbon rims.
Photo credit © James Huang/Future Publishing

The Shimano Dura-Ace Di2 wire is fed into the down tube just behind the head tube.
Photo credit © James Huang/Future Publishing

The rear brake cable is run through the top tube.
Photo credit © James Huang/Future Publishing

Selle Italia's SLR Teknologika Flow saddle and Enve Composites seatpost contribute to the bike's paltry weight.
Photo credit © James Huang/Future Publishing

The seatpost exits the top of the seat tube at an actual angle of 69 degrees but a more conventional effective angle of about 73 degrees.
Photo credit © James Huang/Future Publishing

The Enve Composites carbon stem is light and looks clean.
Photo credit © James Huang/Future Publishing

Vuelo Velo's 8 was built at Black Sheep's Colorado faciilty and features a subtle curved-tube design.
Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Photo credit © James Huang/Future Publishing

Chunky dropouts leave plenty of room for the stays.
Photo credit © James Huang/Future Publishing

Enve's 1.0 carbon road fork is fitted up front.
Photo credit © James Huang/Future Publishing

The Shimano Dura-Ace Di2 front derailleur normally requires additional bracing from the seat tube but that's not possible with this curved-tube design.
Photo credit © James Huang/Future Publishing

Mad Fiber's new carbon fibers are ultralight and use a novel construction method.
Photo credit © James Huang/Future Publishing