Stroma | Frame Spec & Geometry Details

The Stroma is our new Reynolds 725 steel all-season (all day, every day!) road frame. A fast yet versatile bike designed for year round use on a variety of tarmacked surfaces. The Stroma will be available to pre-order at the end of February and we should be shipping these out to customers in late March. Read more about the Stroma here…

Ahead of this we thought we’d release the frame spec and geometry so people can start planning their builds. If you’re interested in getting a Stroma sign up to our newsletter and you’ll be one of the first to know when it’s available:

Frame Spec:

  • Frame Tubing: Reynolds 725 heat treated chromoly double-butted main triangle, ED coated
  • Fork: 1.5″ – 1.1/8″ tapered steerer monocoque carbon fork, mudguard mounts. 12x100mm TA (included)
  • 2 sets bottle cage mounts on all sizes
  • Rear rack and mudguard mounts
  • Di2 cable ports
  • Brake compatibility: Flat mount, 160mm rotor
  • Rear Dropouts: 12x142mm TA (included)
  • Seat post diameter: 27.2mm
  • Seat clamp diameter: 30mm (included)
  • Headset: 44mm, SHIS ZS44/28.6 upper, EC44/40 lower (not included)
  • Front derailleur clamp diameter: 28.6 mm
  • Bottom bracket shell: 68mm bottom bracket, ISO threaded
  • Maximum tyre clearance: 700c x 35mm, 28-30mm with mudguards
  • Chainring clearance: up to 53-39t double


Size X-Small Small Medium Large X-Large
Stack 532mm 550mm 563mm 585mm 604mm
Reach 369mm 377mm 385mm 393mm 402mm
Seat Tube (C-T) 500mm 520mm 540mm 560mm 580mm
Top Tube (C-C) 510mm 526mm 542mm 557mm 572mm
Top Tube (Effective) 522mm 540mm 557mm 572mm 587mm
Head Tube 110mm 125mm 140mm 160mm 180mm
Head Angle 71 72 72.5 72.5 72.5
Seat Angle 74 73.5 73 73 73
BB Drop 70mm 70mm 70mm 70mm 70mm
Chainstay Length 420mm 420mm 420mm 420mm 420mm
Fork Length (A-C) 381mm 381mm 381mm 381mm 381mm
Fork Rake 45mm 45mm 45mm 45mm 45mm
Wheelbase 990mm 995mm 1002mm 1017mm 1032mm