{"product_id":"hks-2022-subaru-wrx-vb-legamax-sport-catback-exhaust","title":"HKS 2022 + Subaru WRX VB LEGAMAX Sport Catback Exhaust","description":"\u003cp\u003e\u003cstrong\u003e31021-AF026\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"sectionFlex\"\u003e\n\u003ch2\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/uploads\/logo\/muffler\/legamax_sports.gif\"\u003e\u003c\/h2\u003e\n\u003cdiv class=\"price\"\u003e\n\u003cp\u003eCode No. 31021-AF026\u003c\/p\u003e\n\u003cp class=\"yen\"\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"contents\"\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eThe quad exhaust for the WRX S4 is designed to reduce exhaust pressure while delivering an impressive sports sound that will leave you excited.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003e■Features\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBy changing the pipe diameter from 74.7mm to 60.5mm x 2 to 45mm x 4, the straight structure achieves low exhaust pressure while reducing unpleasant exhaust note, thus improving both performance and sound quality.\u003c\/li\u003e\n\u003cli\u003eSymmetrically arranging the 4 silencers and the beautiful 98mm titanium tail creates a muffler that is not only powerful in the rear view but also visually appealing when the vehicle is lifted up.\u003c\/li\u003e\n\u003cli\u003eThis exhaust system produces a pleasant bass sound at normal revs and a sporty sound when the accelerator is depressed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/csf4PImHU0mvh19PUaI2fMupJvEEEIYEREenNHDl.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/y9vebSuBaFcork8uSWN8geHcNtvgugFtwF2ITyFp.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/cU2tQhaHFXuT9n8CQ4jBSslTkuGhiE2HKQXxsI4Q.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/0p4vwkyOkSegTxNDCfcJfuYojGw8oxACdf35bR4N.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hks_tv_wrap\"\u003e\u003ciframe class=\"optanon-category-C0004\" width=\"560\" height=\"314\" src=\"https:\/\/www.youtube.com\/embed\/VLEx1D5rn_A?si=51LZj2qTaYPH6fiz\u0026amp;enablejsapi=1\u0026amp;origin=https%3A%2F%2Fwww.hks-power.co.jp\" data-gtm-fw-yt-listening=\"\" data-orig-src=\"https:\/\/www.youtube.com\/embed\/VLEx1D5rn_A?si=51LZj2qTaYPH6fiz\" data-gtm-yt-inspected-98427314_173=\"true\" id=\"534826290\" title=\"SUBARU WRX S4 5BA-VBH FA24 HKS LEGAMAX Sports\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"sectionFlex column50-50\"\u003e\n\u003cdiv class=\"leftBlock\"\u003e\n\u003ctable class=\"normalTable1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCert. No.\u003c\/th\u003e\n\u003ctd\u003eJQR60244002\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable class=\"normalTable2\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eVehicle\u003c\/th\u003e\n\u003ctd\u003eWRX S4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eVBH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eFA24(TURBO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel Year\u003c\/th\u003e\n\u003ctd\u003e21\/11 - \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rightBlock table-scroll table-scroll-auto\"\u003e\n\u003ctable class=\"normalTable2\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eShape of muffler\u003c\/th\u003e\n\u003ctd\u003eTi-1 (Titan)\u003cbr\u003e(LEGAMAX Sports)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eMain material\u003c\/th\u003e\n\u003ctd\u003eS304\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDiameter of tip\u003c\/th\u003e\n\u003ctd\u003e98 x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDiameter of center pipe\u003c\/th\u003e\n\u003ctd\u003e74.7 - 60.5 x 2 - 45 x 4 (*1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth rowspan=\"2\"\u003eClose noise level\u003c\/th\u003e\n\u003cth\u003eStock\u003c\/th\u003e\n\u003ctd\u003e79\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHKS\u003c\/th\u003e\n\u003ctd\u003e90\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth rowspan=\"3\"\u003eAbout road clearance(*2)\u003c\/th\u003e\n\u003cth\u003eClearance\u003c\/th\u003e\n\u003ctd\u003e130mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePortion of the kit\u003c\/th\u003e\n\u003ctd\u003eFront pipe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemarks\u003c\/th\u003e\n\u003ctd width=\"240\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eProduct Weight\u003c\/th\u003e\n\u003ctd\u003e24.14kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5 class=\"bg_gy6\"\u003eRemarks\u003c\/h5\u003e\n\u003cp\u003eNo change in minimum ground clearance. (Stock front pipe 130 mm)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e～Product specifications and sound quality～\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBy changing the pipe diameter from 74.7mm to 60.5mm x 2 to 45mm x 4, both low exhaust pressure and sound deadening effects are achieved.\u003c\/li\u003e\n\u003cli\u003eIn addition to the pipe diameter, the expansion pipe, resonance pipe and muffler have been adjusted appropriately to bring out the boxer engine's character, emphasizing the unique low sound while creating the image of a sound quality with a dry high sound when the driver steps on the engine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/2aQxMjR8UGvQ4boAelfW6lHnvolB24v03633UNB1.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/JHDzh4HWMlPG1G7eQVNPmPUSRMDMxgbBzu6IV1kq.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eExhaust resistance test results\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/7vviC7kDsKqsLc23CRcSOu4h2j77StzRABDtuFsi.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe graph above illustrates the relationship between flow rate and exhaust resistance as measured on a flow bench. Lower resistance relative to flow rate indicates reduced exhaust resistance.\u003c\/li\u003e\n\u003cli\u003eWhen comparing this product with the stock muffler, approximately a 70% reduction in exhaust resistance was observed. This reduction is attributed to the pipe diameter, layout, and straight structure without apertures, which collectively achieve significantly lower exhaust pressure.\u003c\/li\u003e\n\u003cli\u003eThe table below displays the pipe diameter and number of pipes for each part, as well as the equivalence of multiple pipes to a single diameter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/6EZF7G29WcgGuJvt28YbK2P9xK0rmYv4jeHjmz3h.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePower check  (Exhaust replacement only)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/xuIekUtLK85nghofKTUbvkmyBu5m3dMightYKGox.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e*These values are experimental measurements conducted on our vehicles using our chassis dyno. Consequently, results may vary due to factors such as weather conditions, individual vehicle differences, and variations in measuring equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table-scroll table-unset-border-collapse\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eStock\u003c\/td\u003e\n\u003ctd\u003eLEGAMAX Sports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum output\u003c\/td\u003e\n\u003ctd\u003e178.6kW(242.8PS)\/5400rpm\u003c\/td\u003e\n\u003ctd\u003e183.4kW(249.3PS)\/5400rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum torque\u003c\/td\u003e\n\u003ctd\u003e344.5Nm(35.1kgf･m)\/3600rpm\u003c\/td\u003e\n\u003ctd\u003e351.7Nm(35.8kgf･m)\/3500rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe graph above illustrates the power and torque results measured on a chassis dyno. A significant increase in torque of 14.5 Nm (1.5 kgf-m) at 3500 rpm is observed when comparing this product to the stock muffler.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePower check  (with HKS Power Editor)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/Y2WrLLFn7XzXHIasWsvTdEuUsRvvyXTxOdJA4e6m.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e*These values are experimental measurements conducted on our vehicles using our chassis dyno. Consequently, results may vary due to factors such as weather conditions, individual vehicle differences, and variations in measuring equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table-scroll table-unset-border-collapse\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eStock\u003c\/td\u003e\n\u003ctd\u003eLEGAMAX Sports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum output\u003c\/td\u003e\n\u003ctd\u003e181.8kW(247.1PS)\/5700rpm\u003c\/td\u003e\n\u003ctd\u003e181.9kW(247.3PS)\/5300rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum torque\u003c\/td\u003e\n\u003ctd\u003e383.6Nm(39.1kgf･m)\/2700rpm\u003c\/td\u003e\n\u003ctd\u003e388.2Nm(39.6kgf･m)\/3300rpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe graph above displays the power and torque results obtained from the chassis dynamometer. Even when paired with the Power Editor, a maximum torque increase of 12.9 Nm (1.3 kgf-m) at 3200 rpm was verified compared to the stock muffler.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e～Product refinement and precision～\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDevelopment began with the concept of an exhaust system that prioritizes three key aspects: performance, sound quality, and appearance.\u003cbr\u003eBy incorporating a longer pipe length, a departure from the conventional design, we successfully minimized muffled sounds and accentuated a sporty high-frequency tone around 500 Hz. Additionally, utilizing four 45 mm pipes enhances the cross-sectional area, thereby improving both performance and sound quality.\u003cbr\u003eAttention to detail was paramount in the design of the rear view. A symmetrical four-pipe cannon configuration, strategically positioned hook and bracket protrusions, and an intermediate pipe layout engineered to maximize floor space utilization were implemented. This meticulous design ensures minimal ground clearance while delivering a striking quad-tip appearance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/CYrc86nMynZZgeXTQBWkKt6fqTfIudiG6VKSnTNT.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTIG welding is extensively employed in crafting the main silencer, ensuring precision and durability. Furthermore, the titanium tail undergoes a meticulous baking process to achieve a stunning gradation effect. These intricate designs are meticulously executed by skilled craftsmen, all done by hand, ensuring each product meets the highest standards of quality and aesthetics.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"sectionFlex columny\"\u003e\n\u003csection\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/yO3rzj9lt5kUcymnanj41ckGGBkqc0nrhTot0qrO.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/N6ugtHowy64vZxA4WnMzXC3ZCkI4PTMBAGi4ghsx.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/NieFYRXFJL20O9vCGhzhHNdPKl4v99NZnYaoAd2Y.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cp\u003eHKS has dedicated ourselves to perfecting even the smallest details, ensuring that you can enjoy our LEGAMAX Sports muffler for years to come, no matter the situation. We sincerely hope you derive immense satisfaction from your experience with our product.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5 class=\"bg_gy6\"\u003eAbout HKS muffler\u003c\/h5\u003e\n\u003cp\u003e*1: About center pipe\u003cbr\u003eDiameter of center pipe is the portion that has the largest diameter. (Excluding silencer and tip.) It is the condition with stock suspension.\u003cbr\u003e\u003cbr\u003e*2: Minimum road clearance between HKS muffler (Any parts included in the kit) and road surface. Therefore, it may be different from actual road clearance of the vehicle.\u003cbr\u003eThe data is basically the condition with stock suspension. However, please understand that some items have data with low down spring or ride height adjustable suspension kit.\u003cbr\u003e\u003cbr\u003eCaution: Hook, bracket, stay may be changed without prior notice.\u003cbr\u003e\u003cbr\u003e★ Exhaust noise level at idle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":42928936550467,"sku":"31021-AF026","price":2794.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/0456\/5571\/files\/cU2tQhaHFXuT9n8CQ4jBSslTkuGhiE2HKQXxsI4Q.jpg?v=1769922176","url":"https:\/\/gumotorsport.com\/en-us\/products\/hks-2022-subaru-wrx-vb-legamax-sport-catback-exhaust","provider":"GUMOTORSPORT","version":"1.0","type":"link"}