2021 OFF 4 - 625WH



New Frame Design

If you’re looking for true versatility look no further than the 2021 Moustache Off 4.

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 will not disappoint. Stable and confidence-inspiring geometry combined with a comfortable riding position mean long days in the saddle leave you wanting more, not feeling sore.

New Bosch Motor and Battery

As happy in the forest as it is in the urban sprawl there aren’t many places the Off 4 doesn’t excel. Bosch’s Performance Line CX motor offers dynamic, powerful and quiet assistance. The motor’s high torque (85Nm) means the motor seamlessly assists you, even up the steepest of climbs. Rounding out the package, Moustache’s stealthily integrated battery gives the Off 4 a clean aesthetic whilst also being easy to remove, carry and charge. 

Integrated Parts

The Moustache Off frame is further compatible with the unique “Moustache Tour Kit” including mudguards and an integrated rear luggage rack. Exclusive tubular Moustache mud-guards, ultra-solid and reliable, are perfectly centred over the wheel to keep you and your bike dry and clean in all conditions.  With the rear rack incorporating the QL3 system, Ortlieb by Moustache panniers can be attached in seconds, giving the Off even more versatility. Its wide platform also makes it compatible with a large range of child seats. The MIK integration further allows for quick fitting of a wide range of Basil bags and accessories, with more brands coming soon. 

Key Features

  • Bosch’s Performance Line CX Motor provides efficient, intuitive and near-silent power delivery

  • Bosch’s 625wh Powertube Battery is the most efficient unit on the market, meaning more ride time between charges!

  • Unique Moustache design allowing for integration with mudguards and rear luggage rack with several pannier options

  • SRAM’s SX 12spd Drivetrain gives you a wide range of gears and perfect shifting every time

  • Shimano’s MT400 Hydraulic Brakes providing powerful brake control

  • Moustache’s Dropper Seatpost means you’ll be riding in comfort



  • Model: Off 4

  • Frame: Off 4, 6061 T4-T6 Alloy, variable thickness hydroformed tubes, Bosch PowerTube battery integration (Horizontal), integrated cable routing

  • 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%

  • Battery: Bosch, PowerTube 625wh

  • 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: Shimano, 203mm front & 180mm rear


  • Hubs: Front= Shimano, 32H, 15x110mm, w/thru axle
    Rear= 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 a 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

  • Colour: Black / Gloss

  • Weight: 22.5 kg