{"product_id":"for-brompton-bike-p-t-line-ruhm-chain-tensioner-derailleur-5-7-speed-up-to-28t-2","title":"For Brompton Bike P\/T Line Ruhm Chain Tensioner \u0026 Derailleur 5-7 speed up to 28T","description":"\u003cp\u003eThe Brompton Bike P\/T Line Ruhm Chain Tensioner and Derailleur is a precision component designed for 5-7 speed folding bicycles, specifically engineered to support drivetrains with up to a 28-tooth rear cog. This compact solution addresses the unique mechanical requirements of folding bicycle drivetrain systems.\u003c\/p\u003e\n\n\u003ch3\u003eDesign and Construction\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for the Brompton folding bicycle platform, this chain tensioner integrates seamlessly with the bike's compact geometry. The design prioritises precise chain alignment and tension management, critical for maintaining smooth power transfer in small wheel bicycle configurations.\u003c\/p\u003e\n\n\u003ch3\u003eComponents and Specification\u003c\/h3\u003e\n\u003cp\u003eCompatible with 5-7 speed drivetrain setups, the tensioner supports gear ranges typical of urban and commuter folding bicycles. The mechanism allows for precise chain tension adjustment, which is crucial in maintaining efficient power transmission across the bicycle's unique compact frame geometry.\u003c\/p\u003e\n\n\u003ch3\u003eRide Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe chain tensioner helps stabilise the drivetrain during pedalling, reducing chain slap and minimising potential mechanical disruption. Its design supports consistent gear engagement across the bicycle's range of motion, including during folding and unfolding sequences.\u003c\/p\u003e\n\n\u003ch3\u003eIntended Use\u003c\/h3\u003e\n\u003cp\u003eSuited to Brompton bicycle owners seeking a reliable drivetrain component for their small wheel, multi-modal transport solution. The tensioner supports consistent mechanical performance across urban cycling environments and multi-stage journeys.\u003c\/p\u003e","brand":"Brompton","offers":[{"title":"Default Title","offer_id":56374637101433,"sku":null,"price":155.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/9640\/3321\/files\/1722001037_s-l500.jpg?v=1766094662","url":"https:\/\/www.foldingbikes4u.co.uk\/products\/for-brompton-bike-p-t-line-ruhm-chain-tensioner-derailleur-5-7-speed-up-to-28t-2","provider":"Folding Bikes 4U","version":"1.0","type":"link"}