MiniMODs X Series 7 Speed Derailleur + Tensioner Set for Brompton Bicycle P/T Line

MiniMODs X Series 7-Speed Derailleur + Tensioner Set  – P/T Line

Key Features:

• Aluminum alloy CNC-machined lightweight tensioner arms, parallelogram derailleur, and fixture

• Compatible with P/T Line or Electric P Line frame (A/C Line version available in another listing)

• Compatible with the X7 Advanced Cog Set on stock wheelset for up to 7-speed 11–28T (#X7AdvancedCogSet),
  or pair with a 3rd-party rear wheel that supports multi-cogs (7-speed / 28T possible) — not included

• Supports up to 28T cog (original max is 18T on P/T Line)

• Titanium tensioner spring

• Smooth surface treatment available in multiple colors to match your style

• Limited colors may only be available in the first production batch

• Default package includes:

  • One tensioner arm for P/T Line (compatible with stock advanced parallelogram derailleur up to 5-speed / 22T)

• Optional upgrade: Parallelogram derailleur (spring-activated main body, 2 jockey wheels, fixture) for expanded gear range

• Cogs, thumb shifter, shifting cable, and 3rd-party upgrade wheelset are not included but optional

• Tested and confirmed: 11–28T / 7-speed setup is possible on the stock wheel when used with our optional parallelogram derailleur

• For A/C Line version, please refer to the separate listing

Note:

• This modification is more difficult than the relatively easy “plug-and-play” X3 Unibody Cogset 3-speed upgrade

• Please expect more time and patience to fine-tune the result

• Not recommended as a DIY project — please consult your local bike shop (LBS) mechanic before ordering