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The Brompton chain tensioner keeps the chain taught (so that the chain doesn't fall off of the bike when folding and unfolding). The chain tensioner on two and 6 speed Brompton folding bikes also acts as a derailleur
Brompton chain tensioners We have 13 products.
£20.00 In StockBrompton chain tensioner assembly for...
3 Review(s)Replacement chain tensioner assembly for Brompton bicycles without a derailleur (so your single, three or five speed Brompton). This can be easily identified by the silver (dirt may change the colour!) metal disc on the longer of the two arms.
£20.00In Stock
£33.00 In StockBrompton chain tensioner assembly for...
1 Review(s)Replacement chain tensioner assembly for Brompton bicycles with a derailleur (2 speed or 6 speed)
£33.00In Stock
£49.00 In StockBrompton Advance Single Speed Chain Tensioner
Replacement single speed chain tensioner for Brompton bicycles
£49.00In Stock
£40.00 In StockBrompton Advance Derailleur Chain Tensioner
Brompton Advance Derailleur Chain Tensioner
£40.00In Stock
£30.00 In Stock
£6.00 In StockBrompton standard chain tensioner idler...
3 Review(s)Brompton standard chain tensioner idler (jockey wheel) set (pair) for Brompton bikes with no derailleur
£6.00In Stock
£18.00 In StockBrompton derailleur chain tensioner idler set
2 Review(s)Brompton derailleur chain tensioner idler (jockey wheel) bearings / fixings set - pair - QCTIDLDRSET
£18.00In Stock
£2.00 In StockBrompton chain tensioner disc for non DR -...
Replacement chain tensioner disc for Bromptons without a chain tensioner (1, 3 and 5 speed)
£2.00In Stock
£5.00 In StockBrompton chain tensioner nut for 3 speed...
2 Review(s)Brompton chain tensioner nut for Sturmey Archer alloy shell hub This is the longer 19.5mm nut.
£5.00In Stock
Brompton chain tensioner nut for 3 speed SRAM
Brompton chain tensioner nut for SRAM / Sachs 3/6 speed hub (Note the hub internal is the same for 3 and 6 speed - the 6 speed has two sprockets and a longer driver to allow the fitting of them)
Brompton chain tensioner nut for 3 speed...
1 Review(s)Brompton gear indicator / chain tensioner nut for Sturmey Archer steel shell hub (pre-2004) This is the shorter 16.9mm length nut
Derailleur chain tensioner idler (jockey...
Derailleur chain tensioner idler (jockey wheel) spindle, single unit