{"product_id":"suspension-secrets-solid-rear-control-arm-bushes-bmw-f20-m135i-m140i","title":"Suspension Secrets Solid Rear Control Arm Bushes - BMW F20 M135i\/M140i","description":"\u003ch3\u003e\u003cspan\u003eSuspension Secrets Solid Rear Control Arm Bushes – BMW F20 M135i \/ M140i\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIncrease rear axle stability, consistency and cornering grip with Suspension Secrets Solid Rear Control Arm Bushes for the BMW F20 M135i and M140i.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe factory rear control arm bushes use compliant rubber, which can flex significantly during hard cornering. As the bushes deflect, the rear camber angle can change dynamically, reducing the consistency of the tyre contact patch and therefore the amount of grip available through the corner.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBecause camber and toe are closely linked within the rear suspension geometry, this movement can also cause changes in rear toe, making the car feel nervous, unstable or as though the rear axle is “scrabbling” for grip.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Suspension Secrets solid bush solution removes this unwanted compliance, helping keep rear camber and toe more consistent under load for a more predictable and confidence-inspiring rear end.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhy Upgrade the Rear Control Arm Bushes?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eReducing compliance in the rear suspension helps the geometry remain closer to the settings chosen during alignment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePotential benefits include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eIncreased rear axle stability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMore consistent rear camber\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReduced rear toe change\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved cornering grip\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMore predictable handling\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGreater sense of connection to the rear axle\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved road and track performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBetter stability during high-load cornering\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for BMW F20 M135i and M140i\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSolid rear control arm bush design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReduces unwanted suspension deflection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps maintain rear camber under load\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps maintain rear toe under load\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved rear axle stability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncreased cornering grip\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMore precise handling\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMotorsport-grade Rodoball bearings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBillet aircraft-grade 6082 T6 aluminium\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCorrosion-resistant 316 stainless steel components\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned and manufactured in the UK\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eThe Problem With the Factory Bushes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe original rubber bushes are designed to provide refinement and isolate the chassis from road inputs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThat compliance is beneficial for comfort, but under harder driving it allows the rear control arms to move relative to the chassis.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis can cause the wheel alignment to change dynamically as cornering loads increase.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eDynamic Camber Change\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAs the rear control arm bush flexes, the rear camber angle can change.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis affects the way the tyre sits against the road surface and can reduce grip consistency through a corner.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInstead of maintaining the geometry chosen during alignment, the suspension can move away from those settings when the car is loaded heavily.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eDynamic Toe Change\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eChanges in rear camber can also influence rear toe.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eUnwanted toe changes can make the rear axle feel:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eNervous\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInconsistent\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLess predictable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLess stable at the limit\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis is especially noticeable during fast direction changes and sustained high-load cornering.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eMore Stable Rear Geometry\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe solid Suspension Secrets bushes are designed to minimise this movement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBy reducing bush deflection, rear camber and toe remain more consistent as the suspension is loaded.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis can help create:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eGreater rear-end stability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMore predictable grip\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved confidence\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMore consistent cornering behaviour\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eIncreased Cornering Grip\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eKeeping the rear wheel geometry more stable helps the tyre maintain a more consistent contact patch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis can improve the way the rear axle generates grip through the corner, particularly when using:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePerformance road tyres\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSemi-slick tyres\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUprated suspension\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTrack-focused geometry\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eImproved Sense of Connection\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eReducing rubber compliance creates a more direct connection between the rear suspension and chassis.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor the driver, this can result in a more immediate sense of what the rear axle is doing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis is particularly valuable when driving close to the available grip limit.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eMore Precise Handling\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBecause the suspension geometry moves less under load, steering and chassis inputs can produce more repeatable results.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePotential improvements include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMore predictable corner entry\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGreater mid-corner stability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved rear-end confidence\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMore consistent traction\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eMotorsport-Grade Rodoball Bearings\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSuspension Secrets uses motorsport-grade Rodoball bearings within the bush assemblies.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese are selected to provide precise movement and durability in demanding suspension applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e6082 T6 Aluminium Construction\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSuspension Secrets components are manufactured using billet aircraft-grade 6082 T6 aluminium.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis provides a strong, lightweight structure suitable for high-load chassis applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e316 Stainless Steel Components\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCorrosion-resistant 316 stainless steel is used throughout relevant hardware and componentry.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis helps provide long-term durability in an exposed suspension environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eRoad \u0026amp; Track Use\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese bushes are suitable for performance-focused road cars as well as track builds.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThey are particularly well suited to:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFast-road M135i\/M140i builds\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClubsport cars\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTrackday vehicles\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCars running performance geometry\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh-grip tyre setups\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eNVH Considerations\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBecause these bushes replace compliant factory rubber components with a solid, motorsport-oriented design, some increase in noise, vibration and harshness should be expected.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis is a more performance-focused upgrade intended for drivers who prioritise rear axle precision and geometry stability over factory levels of refinement.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWorks Well With Other Suspension Upgrades\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSolid rear control arm bushes work particularly well alongside:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAdjustable rear camber arms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdjustable rear toe arms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdjustable rear traction arms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCoilovers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUprated anti-roll bars\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePerformance geometry setups\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSemi-slick tyres\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eReducing unwanted bush movement allows these other components to work more consistently.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eProfessional Installation Recommended\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProfessional installation is recommended due to the need to remove and replace suspension bush components correctly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAfter fitting, the vehicle should receive:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSuspension inspection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFastener checks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWheel alignment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRear camber setup\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRear toe setup\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eGeometry Setup Recommended\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA professional geometry setup is strongly recommended after installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis ensures the improved suspension stability is matched with correctly configured:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eRear camber\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRear toe\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRide height\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOverall chassis balance\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eVehicle Fitment\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBMW 1 Series F20\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCompatible models:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBMW M135i F20\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBMW M140i F20\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eWhat's Included?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eEach kit includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1 pair Suspension Secrets Solid Rear Control Arm Bushes\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eExplore More BMW F20 Suspension\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e\u003ca href=\"https:\/\/therossocorsacollective.com\/collections\/f20-f21-2011-2019\"\u003eBMW 1 Series F20\/F21\u003c\/a\u003e – Explore suspension, handling and performance upgrades for the M135i, M140i and wider F20\/F21 platform.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e\u003ca href=\"https:\/\/therossocorsacollective.com\/collections\/suspension-secrets\"\u003eSuspension Secrets\u003c\/a\u003e – Browse the wider Suspension Secrets chassis and geometry range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e\u003ca href=\"https:\/\/therossocorsacollective.com\/collections\/bushes\"\u003eBushes\u003c\/a\u003e – Explore upgraded suspension and chassis bush solutions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e\u003ca href=\"https:\/\/therossocorsacollective.com\/collections\/suspension-arms-alingment\"\u003eSuspension Arms \u0026amp; Alignment\u003c\/a\u003e – Browse adjustable arms and geometry components.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ca href=\"https:\/\/therossocorsacollective.com\/collections\/suspension\"\u003eSuspension \u0026amp; Handling\u003c\/a\u003e – Explore coilovers, springs, bushes and chassis upgrades.\u003c\/span\u003e\u003c\/p\u003e","brand":"Suspension Secrets","offers":[{"title":"Default Title","offer_id":54832062267729,"sku":"SS-SB041","price":269.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/6371\/5665\/files\/Suspension-Secrets-Solid-Rear-Control-Arm-Bushes-BMW-F20-M135i-M140i-Suspension-Secrets-186227887.webp?v=1788942869","url":"https:\/\/therossocorsacollective.com\/products\/suspension-secrets-solid-rear-control-arm-bushes-bmw-f20-m135i-m140i","provider":"The Rosso Corsa Collective","version":"1.0","type":"link"}