Genuine Brompton Lower stop disc set Mk.3. The Lower Stop Disc basically helps keep the bike folded. It bolts to the Brompton's rear brake nut where it butts against the seat pillar when the Brompton is folded, this prevents the rear wheel from moving down and unfolding the bike. The Stop Disc fits all generation Brompton bikes so if you have a Mk.1 or an MK.2 stop disc you can upgrade. The kit includes everything you need to replace or install the part. Genuine Brompton replacement part Brompton Lower Stop Disc Set - Mark 3 Stops your Brompton's front wheel from unhooking itself from the chainstay when you pick it up Consists of a hard-plastic stop disc, nut, bolt, spacer and two washers Fits all generation Brompton bikes Tool required: 10mm wrench Download: Brompton Lower Stop Disc & Bolt Set Data Sheet
