This Mariposa Allroad bicycle was built with Kaisei tubing, lugged and a Ritchey Gravel Carbon fork. It has Shimano’s new GRX RX820 2 x 12 speed groupset, which provides wider…
Bicycle Technology: Improving Safety in the Pursuit of Speed
Near the time trial start line, riders mill around nervously waiting to be called. Some chat while others fiddle with their helmet straps, or numbers, or spend a few quiet…
Mariposa Allroad with GRX RX820, 2 x 12 speed Mechanical Disc Groupset
This Mariposa Allroad bicycle was built with Kaisei tubing, lugged and a Ritchey Adventure Carbon fork. It has Shimano’s new GRX RX820 2 x 12 speed groupset, which provides wider…
The Heart of Racing in America
Although bike racing has cyclists traveling the world, to some spectacular spots, it is not always the famous mountain passes, the big cities or the tourist sites that are best…
Mariposa Road Bicycle with Shimano Ultegra Di2, Rim Brake, 2 x 12 Speed
A custom Mariposa road rim brake bicycle built with Kaisei tubing, lugged and brazed. The fork is carbon and the bicycle was built up with a Shimano Ultegra Di2 2…
Mariposa Allroad Bicycle with SRAM AXS
A custom Allroad bicycle build with Kasai tubing, lugged and a SRAM Red Hydraulic disc groupset, Princeton Carbonworks GRIT Wheels, Chris King hubs and headset, Rene Herse extra light tires…
MARIPOSA x FRETORI Bicycle with Shimano GRX LE
In 2003, Charlie Bryer watched the UCI Road World Championships in Hamilton, Ontario. As a grade 10 hockey and soccer player, he didn’t know much about cycling. However, watching Michael Barry attack…
Vintage Bicycle Feature: Lugano. Paris. 1950
In the seventies, we had a good number of regular visitors to our shop on King Street in downtown Toronto. One of the regulars was a Frenchman, named Jean, who visited…
Mariposa Feature: Allroad Bicycle with Dura-Ace Di2
A custom Allroad bicycle built with Kaisei tubing, lugged, brazed and a Ritchey WCS Gravel Carbon Fork. Specifications: Groupset: Shimano Dura-Ace R9170 Hydraulic Di2 2 x 11 speed Wheels: Shimano…
Mariposa Bicycles: The Essence of What We Do
Cinematographer, Luke McCutcheon, Jacq Antrade and team beautifully capture the essence of what we do at Mariposa Bicycles in this short film.
Mariposa Feature: Allroad Bicycle with Shimano Ultegra R8170 12 speed
A custom Allroad bicycle built with Kaisai tubes, lugs and a Whisky carbon fork that accepts fenders. It was built up with a Shimano Ultegra 12 speed hydraulic groupset, ENVE Foundation 45 wheels…
Vintage Bicycle Feature: Praderio. Gallarate, Italy. 1950
Gino Bartali’s frustrations with the Italian back-peddling derailleurs encouraged him to approach the Vittoria Company, makers of the Margherita derailleur, and propose that he finance the production of a derailleur…