Mariposa Adventure Bicycle, Size 55cm with Shimano GRX RX820 2 x 12 Speed



1 in stock


This Mariposa Adventure bicycle was built with Kaisei tubing, lugged and a Ritchey Adventure Carbon fork with braze ons for fenders, front carriers and/or bottle mounts.  It has Shimano’s new GRX RX820 2 x 12 speed groupset, which  provides wider gearing options for comfort and confidence when tackling big mountain challenges, as well as improved mixed terrain control with the new brake lever that is special designed for better compatibility with flared handlebars, has reach adjustment and anti-slip hoods.


  • Frame: Kaisei Tubing, Lugged, Fender Mounts. Sizing:
    • Seat Tube: 55cm
    • Top Tube: 57cm
    • Chainstay 43.5
    • Front Centre: 62.5
    • Seat Angle: 73.5
    • Head Angle: 72
    • Tire Clearance: 700 x 52mm, 650b x 2.4″ (depending on tire/rim manufacturer)
    • Serial Number: 30223
  • Fork: Ritchey Adventure Carbon fork with fender and front carrier and/or bottle mounts
  • Shift / Brake Levers: Shimano GRX RX820 2 x 12 speed, Hydraulic Disc
  • Front Derailleur: Shimano GRX RX820
  • Rear Derailleur: Shimano GRX RX820
  • Crankset: Shimano GRX 48-21 chainrings, 172.5 length
  • Cassette: Shimano 11-36
  • Chain: Shimano 12 speed CN-M8000
  • Handlebars: Shimano Discover Carbon, 20 degree flare, Size 42
  • Stem: Shimano Discover 10cm
  • Seatpost: Shimano Discover Carbon 27.2mm
  • Saddle: Fi’zik Argo Adaptive R3
  • Bottle Cages: PRO
  • Handlebar tape: Fi’zik Bondcrush Classic Soft, 3mm
  • Wheels: Shimano GRX Carbon WH-RX870
  • Tires: Maxxis Rambler 700C x 38mm
  • Pedals: Not Included (optional add-on)






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