{"product_id":"driveshaft-shop-700-hp-x4-axles-9th-gen-civic-si","title":"Driveshaft Shop 700 HP X4 Axles for 12-15 Civic Si","description":"\u003cul\u003e\n\u003cli\u003eRated to 700 Horsepower \u003c\/li\u003e\n\u003cli\u003eWorks with 9th Gen Civic Si\/ILX \u003c\/li\u003e\n\u003cli\u003eDesigned for Drag Racing and AutoX Applications \u003c\/li\u003e\n\u003cli\u003eChromoly CV Housing \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#Description\"\u003eDescription\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"#VehicleFitment\"\u003eVehicle Fitment\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003ch3\u003eDriveshaft Shop X4 700HP Axle Set - 2012-2015 Civic Si \u0026amp; 2013-2015 ILX 2.4 (510358 \/ 510359)\u003c\/h3\u003e\n\n\u003cp\u003eThis is the axle for a fast street car that still shows up at the track. Driveshaft Shop's X4 line is built from 300M with their best heat treat processes, rated to handle 700 to 1000 wheel horsepower depending on application, and it's a direct bolt-in. On a K24Z7 car making real power, this is the tier that stops axles being the weak link.\u003c\/p\u003e\n\n\u003ch4\u003eILX Owners: 2.4 Manual Only\u003c\/h4\u003e\n\n\u003cp\u003eCheck before ordering, since the ILX came two ways.\u003c\/p\u003e\n\n\u003cp\u003eThese fit the \u003cstrong\u003e2.4 manual ILX\u003c\/strong\u003e, which runs the same K24Z7 and transmission as the Civic Si. The 2.0 automatic uses a different drivetrain entirely and these won't work with it.\u003c\/p\u003e\n\n\u003cp\u003eIf you're in a Civic Si, every one of those is the 2.4 manual, so there's nothing to check.\u003c\/p\u003e\n\n\u003ch4\u003e300M Is Why It Holds\u003c\/h4\u003e\n\n\u003cp\u003eThe material is the reason for the rating, and it's a genuinely different tier from what ordinary axles use.\u003c\/p\u003e\n\n\u003cp\u003e300M is a high-strength alloy used where failure isn't an acceptable outcome. Combined with Driveshaft Shop's heat treat processes, it's what lets these handle the torque and shock loading that destroys lesser axles on a hard launch.\u003c\/p\u003e\n\n\u003cp\u003eAxles fail in torsion rather than bending, so material strength through the bar determines whether one survives a sticky tire and a built engine. That's where the 700 to 1000 wheel horsepower range comes from.\u003c\/p\u003e\n\n\u003ch4\u003eBuilt For Cars That Do Both\u003c\/h4\u003e\n\n\u003cp\u003eDriveshaft Shop engineered the X4 line for fast street cars that visit the track for drag, road course, and autocross duty. That's a demanding category, since the axle sees daily driving loads, launch shock, and sustained cornering load in the same week.\u003c\/p\u003e\n\n\u003cp\u003eOn a 9th gen Si that's usually the profile. These cars get driven, and the ones making real power are typically still someone's actual transportation rather than dedicated race equipment.\u003c\/p\u003e\n\n\u003ch4\u003eDirect Bolt-In\u003c\/h4\u003e\n\n\u003cp\u003eNo hub change, no modification, no adapting anything. These go in where your factory axles came out, which keeps the job straightforward and keeps the cost to axles rather than an entire package.\u003c\/p\u003e\n\n\u003ch4\u003eNon-Refundable After Installation\u003c\/h4\u003e\n\n\u003cp\u003eOnce installed these can't be returned, which is standard for driveline components at this level. Confirm your application before ordering rather than after.\u003c\/p\u003e\n\n\u003ch4\u003eCheck Your Range Of Motion After Install\u003c\/h4\u003e\n\n\u003cp\u003eOnce fitted, cycle the suspension through full travel and turn to full lock both directions. You're checking that the inner joint isn't bottoming out at compression or over-extending at droop, and that everything clears through the steering range.\u003c\/p\u003e\n\n\u003cp\u003eOn a lowered car this matters more than it would at stock height, since the axle is working through angles Honda didn't plan for.\u003c\/p\u003e\n\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\n\u003cp\u003e2012-2015 Honda Civic Si\u003cbr\u003e2013-2015 Acura ILX 2.4 manual\u003c\/p\u003e\n\n\u003cp\u003eK24Z7 applications. Part number 510358 \/ 510359. Sold as a pair.\u003c\/p\u003e\n\n\u003ch4\u003eWho Should Run These\u003c\/h4\u003e\n\n\u003cp\u003eThis is for the 9th gen Si or 2.4 ILX owner whose car is genuinely fast and still gets driven, and who's decided axles shouldn't be what limits it. Real power on the street, track days on the weekend, and a set that won't be the thing that ends your day. Confirm your engine if you're in an ILX, bolt them in, and check your travel before you lean on it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e 2012-2015 Honda Civic Si and 2013-2015 Acura ILX 2.4 manual (K24Z7). \u003cstrong\u003eDoes not fit:\u003c\/strong\u003e ILX 2.0 automatic. \u003cstrong\u003ePart number:\u003c\/strong\u003e 510358 \/ 510359. \u003cstrong\u003eRating:\u003c\/strong\u003e 700 to 1000 wheel horsepower depending on application. \u003cstrong\u003eMaterial:\u003c\/strong\u003e 300M bar and splined stub, chromoly CV housing. \u003cstrong\u003eIncludes:\u003c\/strong\u003e axle pair. \u003cstrong\u003eWarranty:\u003c\/strong\u003e 1 year. \u003cstrong\u003eNote:\u003c\/strong\u003e non-refundable after installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003cp\u003e2013-2015 Acura ILX\u003cbr\u003e2012-2015 Honda Civic Si\u003c\/p\u003e \n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\u003c\/ul\u003e\n","brand":"Driveshaft Shop","offers":[{"title":"Default Title","offer_id":47602332368930,"sku":"DSS-510358-510359","price":1399.96,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/DSS-510358-510359_2vqs.png?v=1789484001","url":"https:\/\/www.hybrid-racing.com\/products\/driveshaft-shop-700-hp-x4-axles-9th-gen-civic-si","provider":"Hybrid Racing","version":"1.0","type":"link"}