Brompton GE Line Derailleur Chain Tensioner

Brompton G Line Electric Derailleur Chain Tensioner

This is the chain tensioner for the following Brompton folding bikes:

• 4 speed Brompton G Line electric 

This is not compatible with the G Line, or A, C, P or T line Brompton bicycles 

This chain tensioner is for the Brompton G Line electric folding bikes with 4 speeds and includes the following parts: 

• The GE Derailleur Chain tensioner x 1

Fitting instructions:

Firstly remove the chain tensioner as follows: 
Disengage the chain tensioner to loosen the chain.
Remove the rear wheel by undoing the bolts using a 17mm Spanner
Remove the chain tensioner by removing the counter sunk screw using a 5mm Allen (hex) key 

Installation instructions: 

Place the chain tensioner into position on the rear frame dropout. 
Insert the counter sunk nut in the hole on the inside of the rear frame dropout. 
Screw the counter sunk screw into the counter sunk nut while holding the chain tensioner. Then tighten to 5Nm.

Brompton Q part code: Q103152

Brompton data sheet reference: ds:dr4

Introduced by Brompton in 2024 with G Line electric 4 speed bike