{"product_id":"tomioka-racing-roll-center-adjuster-subaru-brz-scion-fr-s-toyota-86-zn6-zc6","title":"Tomioka Racing Roll Center Adjuster – Subaru BRZ \/ Scion FR-S \/ Toyota 86 (ZN6\/ZC6)","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLowering your Subaru BRZ, Scion FR-S or Toyota 86 is great for looks and center of gravity – but it also \u003cstrong\u003epushes the front roll center way below the car’s center of gravity\u003c\/strong\u003e, which can actually increase body roll and hurt front grip.  \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eTomioka Racing Roll Center Adjuster (TR-CS2005)\u003c\/strong\u003e is an extended front lower ball joint kit designed specifically for the ZN6\/ZC6 chassis. It raises the front roll center by approximately \u003cstrong\u003e30–40 mm on a 30–40 mm (1.2–1.6\") drop\u003c\/strong\u003e, helping bring your suspension geometry back into an effective range for \u003cstrong\u003estreet, track day, time attack, and autocross\u003c\/strong\u003e use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy you want roll center correction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn a lowered BRZ \/ FR-S \/ 86 without correction:\u003c\/p\u003e\n\u003cp\u003e- The front roll center drops well below the center of gravity  \u003cbr\u003e- Body roll increases even though you’ve added stiffer springs  \u003cbr\u003e- The outside front tire gets overloaded and loses contact patch  \u003cbr\u003e- Steering response can feel lazy and vague mid-corner  \u003c\/p\u003e\n\u003cp\u003eBy raising the roll center with extended ball joints, this kit:\u003c\/p\u003e\n\u003cp\u003e- \u003cstrong\u003eReduces front body roll \u003c\/strong\u003ewithout relying only on big sway bars  \u003cbr\u003e- \u003cstrong\u003eImproves front-end bite and mid-corner grip\u003c\/strong\u003e  \u003cbr\u003e- Helps keep \u003cstrong\u003ecamber and toe behavior more consistent\u003c\/strong\u003e through travel  \u003cbr\u003e- Gives you \u003cstrong\u003esharper turn-in and more predictable steering\u003c\/strong\u003e at the limit  \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features \u0026amp; benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- \u003cstrong\u003eVehicle-specific extended ball joints\u003c\/strong\u003e\u003cbr\u003e  Designed for the Subaru BRZ, Scion FR-S and Toyota 86 ZN6\/ZC6 chassis to correct roll center on lowered cars.\u003c\/p\u003e\n\u003cp\u003e- \u003cstrong\u003e30–40 mm roll center correction\u003c\/strong\u003e  \u003cbr\u003e  Ideal for cars lowered roughly \u003cstrong\u003e1.2–1.6 inches (30–40 mm)\u003c\/strong\u003e with lowering springs or coilovers.\u003c\/p\u003e\n\u003cp\u003e- \u003cstrong\u003eHigh-strength alloy steel construction\u003c\/strong\u003e  \u003cbr\u003e  Housings and pins are made from \u003cstrong\u003ehigh strength alloy steel \u003c\/strong\u003efor durability under aggressive street and track use.\u003c\/p\u003e\n\u003cp\u003e- \u003cstrong\u003eLightweight design\u003c\/strong\u003e  \u003cbr\u003e  Engineered to be strong without unnecessary weight added to your unsprung mass.\u003c\/p\u003e\n\u003cp\u003e- \u003cstrong\u003eDirect bolt-on installation\u003c\/strong\u003e  \u003cbr\u003e  Installs in the factory front lower control arms using OEM-style hardware and tapered pins – no cutting or welding.\u003c\/p\u003e\n\u003cp\u003e- \u003cstrong\u003eImproved stability when lowered\u003c\/strong\u003e  \u003cbr\u003e  Helps your BRZ \/ FR-S \/ 86 feel more planted on turn-in, mid-corner and during quick transitions (slaloms, chicanes).\u003c\/p\u003e\n\u003cp\u003e- \u003cstrong\u003ePerfect for dual-use cars\u003c\/strong\u003e  \u003cbr\u003e  Works well for \u003cstrong\u003edaily driven cars that see weekend canyon runs, HPDEs, track days or autocross.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- 2013–2020 Subaru BRZ (ZC6)  \u003cbr\u003e- 2013–2016 Scion FR-S (ZN6)  \u003cbr\u003e- 2017–2020 Toyota 86 \/ GT86 (ZN6)  \u003c\/p\u003e\n\u003cp\u003e\u0026gt; \u003cstrong\u003eNote: Designed for the first-generation ZN6 \/ ZC6 FR-S \/ BRZ \/ 86 platform. Not for second-generation GR86\/BRZ.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical specs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Construction: \u003cstrong\u003eHigh-strength alloy steel\u003c\/strong\u003e  \u003cbr\u003e- Type: \u003cstrong\u003eExtended front lower ball joint \/ roll center adjuster\u003c\/strong\u003e  \u003cbr\u003e- Roll center correction range: \u003cstrong\u003e~30–40 mm\u003c\/strong\u003e (with typical 30–40 mm drop)  \u003cbr\u003e- Installation: \u003cstrong\u003eBolt-on\u003c\/strong\u003e, reuses factory control arms  \u003cbr\u003e- Quantity: \u003cstrong\u003eSold as a pair (left \u0026amp; right)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- 2 x Tomioka Racing roll center adjuster ball joints\u003cbr\u003e- 2 x pins \/ hardware needed for installation  \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- Professional installation and a \u003cstrong\u003efull alignment\u003c\/strong\u003e after installation are strongly recommended.  \u003cbr\u003e- Best results are achieved on cars lowered \u003cstrong\u003eapproximately 30–40 mm (1.2–1.6\")\u003c\/strong\u003e with quality springs or coilovers.  \u003cbr\u003e- For cars lowered 30 mm or more, pairing these with \u003cstrong\u003ebump-steer correcting tie-rod ends\u003c\/strong\u003e is recommended to further refine steering feel and toe curve.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBig brake kit (BBK) compatibility notice\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBecause this kit uses an \u003cstrong\u003eextended ball joint pin\u003c\/strong\u003e, the ball joint housing and control arm sit closer to the rotor hat than stock. On some big brake kits with tight rotor-to-knuckle clearance – especially \u003cstrong\u003eAP Racing \/ Essex Sprint and Competition kits\u003c\/strong\u003e – this can cause \u003cstrong\u003ephysical interference between the ball joint \/ LCA and the rotor hat.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- If you are running an AP Racing \/ Essex Sprint or similar BBK with very tight clearances, this kit may \u003cstrong\u003enot be directly compatible\u003c\/strong\u003e without additional changes (e.g., different LCAs or alternate hats approved by the BBK manufacturer).  \u003cbr\u003e- If you are unsure about fitment with your brake setup, \u003cstrong\u003econtact us before purchasing\u003c\/strong\u003e so we can help verify compatibility.\u003c\/p\u003e\n\u003cp\u003eFor cars on \u003cstrong\u003estock brakes or most OEM-style rotor setups\u003c\/strong\u003e, this roll center adjuster is typically a straightforward bolt-on upgrade.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended supporting mods\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor a well-balanced FR-S \/ BRZ \/ 86 handling package, pair the TR Roll Center Adjuster with:\u003c\/p\u003e\n\u003cp\u003e- Quality \u003cstrong\u003ecoilovers or performance lowering springs\u003c\/strong\u003e\u003cbr\u003e- \u003cstrong\u003eAdjustable front camber bolts or camber plates\u003c\/strong\u003e  \u003cbr\u003e- \u003cstrong\u003eBump-steer tie rods\u003c\/strong\u003e (for cars lowered 30 mm+)  \u003cbr\u003e- Performance alignment tailored to your use (street \/ canyon \/ track)  \u003c\/p\u003e\n\u003cp\u003eDialed in together, these parts give you a front end that \u003cstrong\u003eturns in harder, grips better, and stays more predictable\u003c\/strong\u003e when you push the car.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"400\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"400\" height=\"23\" bgcolor=\"#CCCCCC\"\u003e\n\u003cdiv align=\"left\"\u003eAlloy Steel Construction\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable width=\"400\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"400\" height=\"24\"\u003e\n\u003cdiv align=\"left\"\u003eLight Weight\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable width=\"400\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"400\" height=\"22\" bgcolor=\"#CCCCCC\"\u003eBolt-On\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit Contents:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2 x Roll Centers\u003c\/li\u003e\n\u003cli\u003e2 x Pins\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003carticle data-turn=\"assistant\" data-scroll-anchor=\"false\" data-testid=\"conversation-turn-6\" data-turn-id=\"6ad90c05-5e04-4e69-a997-9eb4ad590d30\" dir=\"auto\" class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto [--thread-content-margin:--spacing(4)] thread-sm:[--thread-content-margin:--spacing(6)] thread-lg:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] thread-lg:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-model-slug=\"gpt-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" data-message-id=\"6ad90c05-5e04-4e69-a997-9eb4ad590d30\" data-message-author-role=\"assistant\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\"\u003e\n\u003ch3 data-end=\"247\" data-start=\"197\"\u003eFAQ – TR Roll Center Adjusters (BRZ\/FR-S\/86)\u003c\/h3\u003e\n\u003cp data-end=\"504\" data-start=\"249\"\u003e\u003cstrong data-end=\"316\" data-start=\"249\"\u003eQ: How much correction do the TR Roll Center Adjusters provide?\u003c\/strong\u003e\u003cbr data-end=\"319\" data-start=\"316\"\u003eThey restore the front roll center by about \u003cstrong data-end=\"375\" data-start=\"363\"\u003e30–40 mm\u003c\/strong\u003e, which is ideal for cars lowered around \u003cstrong data-end=\"445\" data-start=\"416\"\u003e1.2–1.6 inches (30–40 mm)\u003c\/strong\u003e. This helps reduce body roll and improve cornering grip.\u003c\/p\u003e\n\u003cp data-end=\"765\" data-start=\"506\"\u003e\u003cstrong data-end=\"576\" data-start=\"506\"\u003eQ: Will these work with my AP Racing \/ Essex Sprint Big Brake Kit?\u003c\/strong\u003e\u003cbr data-end=\"579\" data-start=\"576\"\u003eNot directly. The extended ball joint design can \u003cstrong data-end=\"649\" data-start=\"628\"\u003ehit the rotor hat\u003c\/strong\u003e on certain big brake kits, especially the AP Racing Sprint\/Competition kits. This is a \u003cstrong data-end=\"762\" data-start=\"737\"\u003eknown clearance issue\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"820\" data-start=\"767\"\u003e\u003cstrong data-end=\"818\" data-start=\"767\"\u003eQ: What are my options if I already have a BBK?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1141\" data-start=\"821\"\u003e\n\u003cli data-end=\"903\" data-start=\"821\"\u003e\n\u003cp data-end=\"903\" data-start=\"823\"\u003eUse \u003cstrong data-end=\"848\" data-start=\"827\"\u003estock ball joints\u003c\/strong\u003e (no roll center correction, but safe with your BBK).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"981\" data-start=\"904\"\u003e\n\u003cp data-end=\"981\" data-start=\"906\"\u003eAdd \u003cstrong data-end=\"933\" data-start=\"910\"\u003ebump-steer tie rods\u003c\/strong\u003e if you’re lowered 30 mm+ for better steering.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1063\" data-start=\"982\"\u003e\n\u003cp data-end=\"1063\" data-start=\"984\"\u003eConsider \u003cstrong data-end=\"1013\" data-start=\"993\"\u003eaftermarket LCAs\u003c\/strong\u003e that have more clearance around big brake kits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1141\" data-start=\"1064\"\u003e\n\u003cp data-end=\"1141\" data-start=\"1066\"\u003eCheck with your BBK manufacturer for alternate hats or clearance options.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1300\" data-start=\"1143\"\u003e\u003cstrong data-end=\"1180\" data-start=\"1143\"\u003eQ: What if I’m not running a BBK?\u003c\/strong\u003e\u003cbr data-end=\"1183\" data-start=\"1180\"\u003eThen you’re fine. The TR Roll Center Adjusters will work as intended on a lowered BRZ\/FR-S\/86 without interference.\u003c\/p\u003e\n\u003cp data-end=\"1300\" data-start=\"1143\"\u003e \u003c\/p\u003e\n\u003cp data-end=\"1300\" data-start=\"1143\"\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e","brand":"Tomioka Racing (TR)","offers":[{"title":"Default","offer_id":48755034554551,"sku":"TR-CS2005","price":205.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/6429\/1511\/files\/tr-cs2004-lores-crop1_1.jpg?v=1782327919","url":"https:\/\/milkymotorsports.com\/products\/tomioka-racing-roll-center-adjuster-subaru-brz-scion-fr-s-toyota-86-zn6-zc6","provider":"Milky Motorsports","version":"1.0","type":"link"}