Brompton Linear Chain Push design for multi external cogs modification (e.g. 11-28T 7 speed)

Component list and functional description to be delivered.

All New Design Ultra Wide Gear Range with External Cogs for Efficient Drive

Features :

1. Stock Rear Frame Compatible without filing

2. New Jockey Wheel with ENDURO bearing and Linear push function

3. New Tensioner with Longer Arm to take up to 28T cog

4. New DR cable set with reinforced spring and linear push function

5. New Chain Pusher with linear push long travel (7 speed)

6. New Hub (wheel) with wide free hub body to take cassette sprockets