{"product_id":"pfr5-1921-rear-subframe-rear-bush-insert","title":"PFR5-1921 – Rear Subframe Rear Insert – M135i M140i M235i M240i","description":"\u003cp data-start=\"355\" data-end=\"764\"\u003eThe Powerflex PFR5-1921 Rear Subframe Rear Bush Insert is a Road Series polyurethane insert designed to stiffen the rear subframe mounting point on BMW F2X\/F3X models, including the M135i, M140i, M235i and M240i. This insert fills the voids in the OEM subframe bush to reduce flex, improve rear stability and give the chassis a tighter, more controlled feel — without the harshness of a full replacement bush.\u003c\/p\u003e\n\u003cp data-start=\"766\" data-end=\"833\"\u003e\u003cstrong data-start=\"766\" data-end=\"774\"\u003eSKU:\u003c\/strong\u003e PFR5-1921\u003cbr data-start=\"784\" data-end=\"787\"\u003e\u003cstrong data-start=\"787\" data-end=\"800\"\u003ePosition:\u003c\/strong\u003e Rear Subframe – Rear Bush Insert\u003c\/p\u003e\n\u003ch2 data-start=\"835\" data-end=\"850\"\u003eKey Features\u003c\/h2\u003e\n\u003ch3 data-start=\"852\" data-end=\"882\"\u003eRoad Series Polyurethane\u003c\/h3\u003e\n\u003cp data-start=\"883\" data-end=\"1025\"\u003e– Stiffer than OEM rubber with daily-road comfort\u003cbr data-start=\"932\" data-end=\"935\"\u003e– Reduces unwanted subframe movement\u003cbr data-start=\"971\" data-end=\"974\"\u003e– Enhances handling precision without excessive NVH\u003c\/p\u003e\n\u003ch3 data-start=\"1027\" data-end=\"1059\"\u003eImproved Chassis Stability\u003c\/h3\u003e\n\u003cp data-start=\"1060\" data-end=\"1199\"\u003e– Reduces rear-end float and flex\u003cbr data-start=\"1093\" data-end=\"1096\"\u003e– Improves vehicle balance under hard cornering\u003cbr data-start=\"1143\" data-end=\"1146\"\u003e– Keeps the rear subframe properly aligned under load\u003c\/p\u003e\n\u003ch3 data-start=\"1201\" data-end=\"1230\"\u003eSharper Driver Feedback\u003c\/h3\u003e\n\u003cp data-start=\"1231\" data-end=\"1394\"\u003e– More predictable rear axle behaviour\u003cbr data-start=\"1269\" data-end=\"1272\"\u003e– Better stability during acceleration and direction changes\u003cbr data-start=\"1332\" data-end=\"1335\"\u003e– Ideal for tuned daily-driven M-Lites and fast-road setups\u003c\/p\u003e\n\u003ch3 data-start=\"1396\" data-end=\"1425\"\u003eEasy, Effective Upgrade\u003c\/h3\u003e\n\u003cp data-start=\"1426\" data-end=\"1555\"\u003e– Inserts into the OEM bush (no press tools needed)\u003cbr data-start=\"1477\" data-end=\"1480\"\u003e– Quick installation\u003cbr data-start=\"1500\" data-end=\"1503\"\u003e– Noticeable improvement for minimal cost and effort\u003c\/p\u003e\n\u003ch2 data-start=\"1557\" data-end=\"1570\"\u003eBenefits\u003c\/h2\u003e\n\u003cp data-start=\"1571\" data-end=\"1901\"\u003eThe PFR5-1921 insert tightens up the rear of the F2X\/F3X chassis, giving the car a more planted and confident feel. It reduces subframe flex, improves traction and sharpens the overall driving dynamics, making it a perfect upgrade for M135i\/M140i\/M235i\/M240i owners wanting better rear-end control without going full Black Series.\u003c\/p\u003e\n\u003ch2 data-start=\"1903\" data-end=\"1915\"\u003eFitment\u003c\/h2\u003e\n\u003cp data-start=\"1916\" data-end=\"2072\"\u003eSuitable for:\u003cbr data-start=\"1929\" data-end=\"1932\"\u003e– BMW M135i (F20\/F21)\u003cbr data-start=\"1953\" data-end=\"1956\"\u003e– BMW M140i (F20\/F21)\u003cbr data-start=\"1977\" data-end=\"1980\"\u003e– BMW M235i (F22\/F23)\u003cbr data-start=\"2001\" data-end=\"2004\"\u003e– BMW M240i (F22\/F23)\u003cbr data-start=\"2025\" data-end=\"2028\"\u003e– Also suitable for other RWD F2X\/F3X models\u003c\/p\u003e\n\u003cp data-start=\"2074\" data-end=\"2136\"\u003e\u003cstrong data-start=\"2074\" data-end=\"2082\"\u003eSKU:\u003c\/strong\u003e PFR5-1921\u003cbr data-start=\"2092\" data-end=\"2095\"\u003e\u003cstrong data-start=\"2095\" data-end=\"2108\"\u003ePosition:\u003c\/strong\u003e Rear Subframe – Rear Insert\u003c\/p\u003e\n\u003ch2 data-start=\"2138\" data-end=\"2161\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp data-start=\"2162\" data-end=\"2307\"\u003e– Installs into the factory rear subframe bush\u003cbr data-start=\"2208\" data-end=\"2211\"\u003e– No bush removal required\u003cbr data-start=\"2237\" data-end=\"2240\"\u003e– Slight NVH increase possible\u003cbr data-start=\"2270\" data-end=\"2273\"\u003e– Professional fitting recommended\u003c\/p\u003e\n\u003ch2 data-start=\"2309\" data-end=\"2329\"\u003eAbout Powerflex\u003c\/h2\u003e\n\u003cp data-start=\"2330\" data-end=\"2548\"\u003ePowerflex Road Series bushes provide enhanced stability and control while maintaining comfort for daily use. Designed to last longer and perform better than OEM rubber, they’re ideal for fast-road and tuned BMW builds.\u003c\/p\u003e","brand":"Powerflex","offers":[{"title":"Default Title","offer_id":53318421709129,"sku":"PFR5-1921","price":68.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0979\/2851\/1817\/files\/PFR5-1921.jpg?v=1763222946","url":"https:\/\/www.trackwarriormods.co.uk\/products\/pfr5-1921-rear-subframe-rear-bush-insert","provider":"Track Warrior Mods","version":"1.0","type":"link"}