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  The KtraK kit is a replacement rear-drive assembly that turns any mountain bike into an all-terrain vehicle. Released in 2006, the base kit costs $ 400 and consists of a composite wheel and polyurethane track. The goal of the kit, invented by Kyle Reeves of Vancouver, Canada, was to boost traction so that difficult […]

Kestrel, a company formed by a group of ex-Trek Bicycle Corp. employees, set out in 1986 to revolutionize performance bicycles. When the Kestrel 4000 was introduced, it was the first commercially available bicycle frame completely made of aerodynamic carbon fiber tubing. Although carbon fiber, a super-lightweight, and strong material, had been utilized in smaller bicycle

First proposed in 1987 by Norwich based bicycle designer Mike Burrows, the original design of this bicycle was rejected by many British bicycle manufacturing companies as the monocoque frame was deemed illegal by the UCI for use in competitive cycling events. When the ban was lifted in 1990, Lotus Engineering agreed to further develop and

The Cat Cheetah was created by Rudi Kurth, a Swiss engineering prodigy. Rudi trained initially on the construction of lightweight panels for race cars and also built and raced motorcycle sidecars. In 1995 Rudi built the first Cat Cheetahs for himself and a friend primarily for triathlon, duathlon and time trials. The bike was innovative,

Tandem bicycles have been around since before the turn of the last century. The great advantage of a tandem is that it allows riders of different skills and abilities to ride together, making this style a favorite for couples. Tandems are typically faster than single bikes due to double the power with the same frontal

Recumbents, or bicycles that are ridden from a reclining position, have maintained a small but steady market since the 1930s. They are especially appreciated by those with back and neck problems. Although slow uphill, they can be quite fast downhill or on level ground. BikeE began producing recumbents in 1993 and grew to become the

Greenstar Bikes began researching bamboo as a frame- building material in 2010. Several prototypes were evaluated, first using carbon fiber lugs, then cast aluminum lugs, before arriving at the current model. The final design uses aluminum chain stays and welded aluminum lugs, with bamboo top tubes, down tubes, seat tubes, and seatstay tubes. Greenstar’s proprietary

The AE21 is a compact e-bike aimed at urban commuters with a design that integrates a lithium-ion battery into the bike’s aluminum frame. This arrangement allows space at the center of the bike for a laptop bag and folding lock. It is propelled by a 250-watt electric motor located in the front wheel hub. The

The Footloose is a collaboration between Korean automotive manufacturer Mando and British bicycle designer Mark Sanders. It is a hybrid electric bicycle, storing energy developed by pedaling in an internal lithium-ion battery. Mas-Design, Mark Sander’s website, claims this is the world’s first chainless bicycle. Rather than using a chain, mechanical energy from pedaling is converted