84g - LIGHTWEIGHT ALUMINUM TENSIONER GEAR RANGE ESPANSION UPGRADE POTENTIAL FOR BROMPTON P/T LINE 4 SPEED (H&H)

- Compatible to even larger cog (original 18T)

- Titanium Tensioner Spring.

- Smooth surface treatment with multiple colours to match your style.

Listing only for one tensioner arm and hook for P/T Line Brompton.

Not compatible with other older rear frame Brompton (e.g. A or C Line) Jockey wheels, Hub or external cogs modification kit not included (Shimano spec).