{"product_id":"whiteline-kca495-front-caster-bushing-bmw-z4-gr-supra","title":"Whiteline 19-21 BMW Z4 \/ 20-22 Toyota GR Supra Front Control Arm Bushing Kit (Caster Bushing)","description":"\u003ch4\u003eAdd Real Caster To Your Z4 Or Supra For Sharper Steering Feel\u003c\/h4\u003e\n\u003cp\u003eThe BMW Z4 and Toyota GR Supra share a front suspension design with a compliant front radius arm bushing that limits how much caster correction you can dial in. This Whiteline KCA495 front radius arm lower bushing kit uses a dual offset design to increase static caster and dynamic negative camber gain, sharpening steering feel and improving straight line stability.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eIncreases static caster and dynamic negative camber gain for sharper turn in\u003c\/li\u003e\n\u003cli\u003eDual offset bushing design delivers more steering weight and precision\u003c\/li\u003e\n\u003cli\u003eImproves braking performance and reduces under load alignment change\u003c\/li\u003e\n\u003cli\u003eFirmer than the factory bushing for a more connected steering feel\u003c\/li\u003e\n\u003cli\u003eDirect bolt in replacement at the factory front radius arm mounting point\u003c\/li\u003e\n\u003cli\u003eKCA495 shares the same front radius arm design across the Z4 G29 and GR Supra A90 platforms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTrim\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2025\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eZ4\u003c\/td\u003e\n\u003ctd\u003esDrive30i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020-2025\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eZ4\u003c\/td\u003e\n\u003ctd\u003eM40i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020-2026\u003c\/td\u003e\n\u003ctd\u003eToyota\u003c\/td\u003e\n\u003ctd\u003eGR Supra\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020-2026\u003c\/td\u003e\n\u003ctd\u003eToyota\u003c\/td\u003e\n\u003ctd\u003eGR Supra\u003c\/td\u003e\n\u003ctd\u003ePremium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eWhiteline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eKCA495\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e9319924463954\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition\u003c\/td\u003e\n\u003ctd\u003eFront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eRadius Arm Lower Bushing Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBenefit\u003c\/td\u003e\n\u003ctd\u003eIncreased Caster and Negative Camber Gain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Contents\u003c\/td\u003e\n\u003ctd\u003eShell Bushings and Tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFront radius arm lower dual offset caster bushing kit\u003c\/li\u003e\n\u003cli\u003eRequired hardware for installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAbout Whiteline\u003c\/h4\u003e\n\u003cp\u003eWhiteline designs and manufactures suspension components engineered to sharpen handling while preserving daily drivability. Their caster and camber correction kits, control arms, and bushing sets use proprietary synthetic elastomers and precision engineered geometry to correct factory suspension compliance and unlock more consistent, predictable handling.\u003c\/p\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the KCA495?\u003c\/strong\u003e\u003cp\u003eThe KCA495 is a Whiteline front radius arm lower bushing kit for the BMW Z4 and Toyota GR Supra that increases static caster and dynamic negative camber gain using a dual offset design.\u003c\/p\u003e\n\u003cstrong\u003eWhat benefit does more caster provide?\u003c\/strong\u003e\u003cp\u003eIncreased caster improves straight line stability and steering self centering while adding dynamic negative camber under cornering load for better grip.\u003c\/p\u003e\n\u003cstrong\u003eDoes this kit affect braking performance?\u003c\/strong\u003e\u003cp\u003eYes, the firmer bushing design reduces suspension compliance under load, which Whiteline notes improves braking performance and alignment retention.\u003c\/p\u003e\n\u003cstrong\u003eDo I need an alignment after installing this kit?\u003c\/strong\u003e\u003cp\u003eYes, a full front end alignment is recommended after installation since the kit changes caster and camber characteristics.\u003c\/p\u003e\n\u003cstrong\u003eIs this the same kit as the KCA497?\u003c\/strong\u003e\u003cp\u003eNo, the KCA495 targets caster and negative camber gain at the front radius arm, while the KCA497 is a separate front lower control arm bushing kit focused on camber adjustment.\u003c\/p\u003e\n\u003cstrong\u003eCan I install this kit in my home garage?\u003c\/strong\u003e\u003cp\u003eYes, most installers with basic hand tools and jack stands can complete this bushing swap, though a proper alignment afterward requires shop equipment.\u003c\/p\u003e\n\u003cstrong\u003eWill this kit work with lowering springs or coilovers?\u003c\/strong\u003e\u003cp\u003eYes, this kit is commonly installed alongside lowering springs or coilovers to help correct alignment characteristics that shift with a lower ride height.\u003c\/p\u003e\n\u003cstrong\u003eIs this kit front or rear specific?\u003c\/strong\u003e\u003cp\u003eThis kit is for the front radius arm lower position only and does not include any rear suspension components.\u003c\/p\u003e\n\u003ch4\u003eInstall Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eRaise and safely support the front of the vehicle on jack stands\u003c\/li\u003e\n\u003cli\u003eRemove the front radius arm from its chassis and control arm mounting points\u003c\/li\u003e\n\u003cli\u003ePress out the factory bushing from the radius arm\u003c\/li\u003e\n\u003cli\u003eInstall the new Whiteline dual offset bushing into the radius arm\u003c\/li\u003e\n\u003cli\u003eReinstall the radius arm and torque all fasteners to factory specification\u003c\/li\u003e\n\u003cli\u003eLower the vehicle and have a professional alignment performed\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Whiteline","offers":[{"title":"Default Title","offer_id":46249995894863,"sku":"WHLKCA495","price":103.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/whlkca495-1_ac3d0b97-17d4-4202-bebc-f81a6bc7a0ec.webp?v=1785250547","url":"https:\/\/www.blackopsautoworks.com\/products\/whiteline-kca495-front-caster-bushing-bmw-z4-gr-supra","provider":"Black Ops Auto Works","version":"1.0","type":"link"}