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Moustache Off 4 Open 2021

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Currently no ETA for further stock in this model.

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If you’re looking for true versatility look no further than the 2021 Moustache Off 4 Open. The brand new 2021 Off 4 Open features a low step-through frame provides better accessibility than all previous Off models.

Whether you’re looking to get off the beaten track, climb mountains or simply get some fresh air on the everyday commute the Off 4 Open will not disappoint. Stable and confidence inspiring geometry combined with a comfortable riding position means long days in the saddle leave you wanting more, not feeling sore. 

  • Model - Off 4 Open
  • Frame - Off 4 Open, 6061 T4-T6 Aluminum, variable thickness hydroformed tubes, exclusive integration for the Bosch PowerTube (horizontal) battery, internal cable routing, “mid step”
  • Fork - RockShox, Recon Silver TK, with external rebound control, TurnKey lockout, 100mm travel, 15x110mm, Boost, 42mm Offset, mud-guard compatible
  • Motor - Bosch Performance Line CX 250W motor – 85Nm Torque available on a wide range of speeds, optimized eMTB mode, extended boost function – Compact, lightweight, minimal resistance to pedalling and extreme responsiveness. 250W rated power, Max 600W. Assistance up to 340%. Max speed 32kph
  • Battery - Bosch, PowerTube 625Wh
  • Battery Range - Estimate your ebike battery range
  • Charger - Bosch, 4Ah
  • Display - Bosch Purion – 5 modes (Eco, Tour, eMTB, Turbo, Off) – « Walk assist »


  • Rear derailleur - Shimano, Deore, RD-M5100-SGS, 11-speed
  • Front cog / Chainring - FSA 34 teeth Narrow Wide optimized – direct mount fixation
  • Cassette - Shimano, Deore, CS-M5100-11S, 11-51T
  • Chain - Sram, PC1110, 11-speed w/Powerlock
  • Shifters - Shimano, Deore, SL-M5100 Rapidfire Plus
  • Crankset - Moustache, Alloy, 170mm
  • Brakes - Shimano, MT400 hydraulic disc brakes
  • Rotors Front/Rear (in mm) - Shimano, 203mm front & 180mm rear


  • Front Hub - Shimano, 32H, 15x110mm, w/thru axle
  • Rear Hub - Shimano, 32H, 9x141mm, w/QR
  • Rims - Moustache asymmetric, Aluminum 6061E, welded, double walled, 32 holes, 27.5″, 35mm internal width, mounted with Tubeless valves and flap
  • Tires - Maxxis, Rekon 27.5×2.80


  • Saddle - Moustache comfort, double density fill with flexible cover
  • Seatpost - KS-900I, dropper-post w/remote lever, 31.6mm Size S= 100mm travel Size M/L= 125mm travel
  • Seat clamp - Alloy 34.9mm
  • Handlebar - Moustache, Alloy 680mm, 15mm rise, 9° backsweep, 5° upsweep
  • Stem - Moustache, 3D forged Aluminum, 60mm
  • Headset - FSA, No 57B
  • Grips - Ergonomic, dual-density
  • Pedals -Aluminum platform with reflectors
  • Warranty - 5 years frame and Moustache Bikes fork – 2 years motor, battery (or 500 cycles) and accessories
  • Sizes - Small, Medium, Large
  • Color - Black / gloss
  • Weight - 22.5 kg

Though we’re a bike shop that sells, builds and fixes bicycles, they’re really just the means to an end; albeit a beautifully designed means to an idyllic end. Our job most importantly is to encourage as many people as we can to get out and ride for transport and enjoyment. We'd love to make riding a bike as commonplace as your morning cup of coffee, which by the way is our other obsession.

Bicycle Junction is situated at 1 Marion St, Te Aro, Wellington.