the PINION GEARBOX frame bike builder

The N-1 will not run derailleur, it has been designed to accommodate the Pinion gearbox only and Gates Carbon Drive.  Gearboxes have more long-term benefits for mountain biking than an exposed rear derailleur system. Years of maintenance free cycling. 10000 quiet belt drive miles.  

The N-1 is designed around the Pinion gearbox and 2 tyre sizes. Both 29 x 2.4" and 27.5 x 3.0" (plus sized) tyres without affecting the handling. This design uses the benefits of carbon monocoque construction from one huge tool. However the "reach" (top tube) can be changed from between 420 - 485mm by using tool sections to lengthen the frame. Fully custom options are available, allowing the head angle can be anything from 65 to 70 degrees.  Bottom bracket drop can also be custom made by changing the mounting plates.

from 4,000.00


The N-1 has been designed around the benefits of having a dedicated Pinion and Gates CDX drive train. If you want to SINGLESPEED or run a DERAILLEUR, then choose the N-2.

The N-1 is long with a Reach of up to 475mm, ideal for running 140mm forks with 29" or 150mm with 27.5"+ Wheels. 

  • Head angle: 66 degrees

  • Headset: SHIS ZS44/ZS56

  • Fork Max: 530mm / 150mm (27.5") 140mm (29")

  • Wheel sizes:27.5x3.0" or 29x2.4"

  • Chainstay length: 445mm (113T belt) or 435mm (111T belt)

  • Rear end: 142mm Maxle

  • Seatpost: 30.9 or 31.6mm

  • Weight: 1.5Kg

  • Bottle cages: 1

The rear brake runs externally along the underside of the top tube and down the rear seat stay.  1 bottle cage ensures the down tube is un-drilled, holding its impact strength.
This frame can also be built up with the following options:

  • Pinion P-Line 18 - 9 speed gearboxes

  • Pinion C-Line 12 - 6 speed gearboxes

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