{"product_id":"st-suspensions-21mm-front-13mm-rear-sway-bar-set-toyota-mr2-aw11","title":"AW11 ST Suspensions Sway Bars (1984-89 MR2)","description":"\u003ch2\u003eST Suspensions Sway Bars\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFor 1984–1989 JDM Toyota MR2 AW11 and 1985–1989 U.S.-Market Toyota MR2 AW11\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eST Suspensions sway bars\u003c\/strong\u003e offer a \u003cstrong\u003e21 mm front bar, 13 mm rear bar, or front-and-rear set\u003c\/strong\u003e for the Toyota MR2 AW11. Multi-hole endlink mounting provides roll-stiffness adjustment, while matched pivot bushings support the selected bar diameter.\u003c\/p\u003e\n\u003cp\u003eChoose the axle configuration to suit the handling balance you want to change. A front-only purchase leaves the rear arrangement unchanged; adding rear roll stiffness changes the car’s cornering balance and is not an automatic improvement for every setup. \u003cstrong\u003eRear-containing configurations require original-style rear spring perches and drilling.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree purchase configurations:\u003c\/strong\u003e 21 mm front, 13 mm rear, or both bars together\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-hole endlink mounting\u003c\/strong\u003e for roll-stiffness adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold-formed steel construction\u003c\/strong\u003e with a protective powder-coated finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatched pivot bushings\u003c\/strong\u003e for each included bar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength-adjustable spherical rear endlinks and rear mounting components\u003c\/strong\u003e included with Rear and Front + Rear configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eToyota MR2 — AW11 \/ MK1\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1984–1989:\u003c\/strong\u003e JDM \/ Naturally aspirated 4A-GE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1985–1989:\u003c\/strong\u003e U.S.-Market \/ Naturally aspirated 4A-GE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1986–1989:\u003c\/strong\u003e JDM Supercharged \/ 4A-GZE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989:\u003c\/strong\u003e U.S.-Market Supercharged \/ 4A-GZE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront and Front + Rear:\u003c\/strong\u003e Serviceable factory front sway-bar brackets, bracket bolts and endlinks are required and not included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear and Front + Rear:\u003c\/strong\u003e Original-style rear struts with intact lower spring perches are required. Aftermarket coilovers or altered rear spring perches are outside this rear-bar fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear spring-perch drilling is required\u003c\/strong\u003e for Rear and Front + Rear configurations. Factory endlink-tab or exhaust-heatshield trimming may also be needed.\u003c\/li\u003e\n\u003cli\u003eRear-containing configurations fit factory rear-bar and no-rear-bar arrangements using the supplied mounting components; the original rear endlink tab is not required.\u003c\/li\u003e\n\u003cli\u003eManual and automatic transmissions and factory coupe\/T-bar body styles are covered where originally offered. U.S.-Market 1985 applications are manual only; JDM supercharged applications begin August 1986.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e ST Suspensions\u003cbr\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Sway bars\u003cbr\u003e\n\u003cstrong\u003eConfigurations:\u003c\/strong\u003e Front \/ Rear \/ Front + Rear\u003cbr\u003e\n\u003cstrong\u003eBar Diameter:\u003c\/strong\u003e Front: 21 mm; rear: 13 mm\u003cbr\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Cold-formed steel\u003cbr\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Powder-coated\u003cbr\u003e\n\u003cstrong\u003eAdjustment:\u003c\/strong\u003e Multi-hole endlink mounting\u003cbr\u003e\n\u003cstrong\u003eRear Endlinks:\u003c\/strong\u003e Length-adjustable spherical links, included with rear-containing configurations\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eChoosing Your Sway Bar Setup\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFront — Best for changing the front bar while preserving the existing rear setup.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose the 21 mm front bar when you want front-bar adjustment without adding or replacing a rear bar.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRear — Best for adding rear-bar adjustment while retaining your current front bar.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose the 13 mm rear kit when a rear handling-balance change is your goal and the original-style spring perches are retained.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFront + Rear — Best for changing both axle bars together.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose the manufacturer’s set when you deliberately want the 21 mm front and 13 mm rear bars in one purchase, with the rear mounting components included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhiteline 18 mm rear bar — Best for retaining an existing factory rear-bar mounting setup.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"https:\/\/preserverad.com\/products\/whiteline-18mm-adjustable-rear-sway-bar-1985-1989-toyota-mr2-aw11\"\u003e\u003cstrong\u003eWhiteline 18 mm adjustable rear sway bar\u003c\/strong\u003e\u003c\/a\u003e is another option for U.S.-Market 1985–1989 naturally aspirated and 1988–1989 supercharged cars with the complete original rear mounting system. It includes the bar and pivot bushings, rather than the ST rear mounting kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOur Recommendation:\u003c\/strong\u003e Choose only the axle change your setup needs. Front preserves the existing rear arrangement; Rear adds a rear-bar tuning option; Front + Rear suits a planned change at both ends. Rear-containing configurations require spring-perch drilling, so they are not a direct bolt-on choice.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFront — 21 mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) 21 mm front sway bar\u003c\/li\u003e\n\u003cli\u003e(2) Front pivot bushings\u003c\/li\u003e\n\u003cli\u003eBushing grease\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRear — 13 mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) 13 mm rear sway bar\u003c\/li\u003e\n\u003cli\u003e(2) Rear pivot bushings and (2) pivot brackets\u003c\/li\u003e\n\u003cli\u003e(2) Rear spring-perch U-brackets\u003c\/li\u003e\n\u003cli\u003e(2) Length-adjustable spherical rear endlinks\u003c\/li\u003e\n\u003cli\u003eRear mounting hardware and bushing grease\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFront + Rear — 21 mm \/ 13 mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(1) 21 mm front sway bar\u003c\/li\u003e\n\u003cli\u003e(2) Front pivot bushings\u003c\/li\u003e\n\u003cli\u003e(1) 13 mm rear sway bar\u003c\/li\u003e\n\u003cli\u003e(2) Rear pivot bushings and (2) pivot brackets\u003c\/li\u003e\n\u003cli\u003e(2) Rear spring-perch U-brackets\u003c\/li\u003e\n\u003cli\u003e(2) Length-adjustable spherical rear endlinks\u003c\/li\u003e\n\u003cli\u003eRear mounting hardware and bushing grease\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"ST Suspensions","offers":[{"title":"Front — 21 mm","offer_id":67906569961781,"sku":"1645","price":339.0,"currency_code":"USD","in_stock":true},{"title":"Rear — 13 mm","offer_id":67906569994549,"sku":"1657","price":379.0,"currency_code":"USD","in_stock":true},{"title":"Front + Rear — 21 mm \/ 13 mm","offer_id":67902792827189,"sku":"1656","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/ChatGPT_Image_Oct_22_2026_06_34_31_PM.png?v=1792708509","url":"https:\/\/preserverad.com\/products\/st-suspensions-21mm-front-13mm-rear-sway-bar-set-toyota-mr2-aw11","provider":"Preserve Rad","version":"1.0","type":"link"}