{"product_id":"nitron-racing-bmw-f20-f21-11-19-nitron-r1-suspension-kit","title":"Nitron NTR R1 Coilovers - BMW M135i\/M140i F20\/F21","description":"\u003cp\u003e\u003cstrong\u003eNitron NTR R1 coilovers for BMW M135i and M140i F20\/F21 applications\u003c\/strong\u003e provide linked compression\/rebound adjustment in a serviceable damper package. This listing concerns the F20\/F21 hatchback generation, not a later F40 M135i or G42 M240i.\u003c\/p\u003e\u003ch2\u003eIdentify the exact F20\/F21 build\u003c\/h2\u003e\u003cp\u003eNitron's application catalogue identifies M135i and M140i within this suspension family. Confirm the drivetrain, factory damper equipment and current mounting arrangement before ordering. xDrive compatibility or retention of adaptive damping must not be assumed from the engine badge alone.\u003c\/p\u003e\u003ch2\u003eR1 for road and track setup\u003c\/h2\u003e\u003cp\u003eA single control changes compression and rebound together, keeping the damping setup process straightforward. Spring specification and ride height still need to suit tyre grip, road mileage, available travel and intended circuit use.\u003c\/p\u003e\u003cp\u003eAgree the supplied top mounts, rear spring arrangement and any electronic-damping accessories before ordering. The single product variant does not mean all optional configurations are included. Nitron's rebuildable dampers support later maintenance.\u003c\/p\u003e\u003ch2\u003eCompare the matching R3\u003c\/h2\u003e\u003cp\u003eThe \u003ca href=\"\/products\/nitron-racing-bmw-f20-f21-11-19-nitron-r3-suspension-kit\"\u003eF20\/F21 NTR R3 kit\u003c\/a\u003e offers independent rebound and high-\/low-speed compression. Compare it when those controls will be used methodically rather than selecting solely by price.\u003c\/p\u003e\u003cp\u003eExplore \u003ca href=\"\/collections\/bmw-m135i-f20-f21-suspension\"\u003eM135i suspension\u003c\/a\u003e or \u003ca href=\"\/collections\/bmw-m140i-f20-f21-suspension\"\u003eM140i suspension\u003c\/a\u003e for the wider chassis options. Check compatibility between dampers and any aftermarket arms or mounts, then complete fitting with measured alignment. Confirm current build timing before booking installation.\u003c\/p\u003e","brand":"Nitron Racing","offers":[{"title":"Default Title","offer_id":55764380254557,"sku":null,"price":3452.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/0411\/2989\/files\/PRODZOOM_263415_BMW_E46_R1_Kit.jpg?v=1736685399","url":"https:\/\/www.nineteen72performance.co.uk\/products\/nitron-racing-bmw-f20-f21-11-19-nitron-r1-suspension-kit","provider":"Nineteen72 Performance","version":"1.0","type":"link"}