{"product_id":"driveshaft-shop-1000-hp-rated-axle-hub-kit-06-11-civic-si","title":"Driveshaft Shop 1000 HP Axle\/Hub Kit for 06-11 Civic Si","description":"\u003cul\u003e\n\u003cli\u003e1000 HP Rated Axles, Hubs, and Extended Studs \u003c\/li\u003e\n\u003cli\u003eDesigned for Drag Racing and AutoX Applications \u003c\/li\u003e\n\u003cli\u003eCompatible with 8th Gen Civic Si \u003c\/li\u003e\n\u003cli\u003eWorks with OEM Sized 27-Spline Differential \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 1000HP Axle \u0026amp; Hub Kit - 2006-2011 Honda Civic Si (510535)\u003c\/h3\u003e\n\n\u003cp\u003eThe Level 5.9 was the go-to high horsepower import axle for over twenty years. This replaces it, and the numbers tell you why. Where the 5.9 was rated at 850 horsepower, this handles well over 1,000 wheel horsepower on the factory 27-spline differential. Complete kit with axles, hubs, and extended studs, built for hardcore race cars and street cars making power that used to require a driveshaft conversation.\u003c\/p\u003e\n\n\u003ch4\u003eWhat Changed From The 5.9\u003c\/h4\u003e\n\n\u003cp\u003eWorth knowing if you've run the previous generation, because this isn't a minor revision.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eModular two-piece outer CV.\u003c\/strong\u003e Driveshaft Shop's proven modular design replaces the previous single-piece approach, using a 4340 CV housing with a 300M splined wheel stub. That combination gives you the strength where it's needed with low wear properties and a longer lifespan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLarger diameter splined axle bar.\u003c\/strong\u003e Increasing the spline diameter on the 300M bars improves torsional strength, which is how axles actually fail. Twist rather than bend, and more material through the splined section is what handles it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRating went from 850 to over 1,000 whp.\u003c\/strong\u003e That's the practical outcome of both changes together, and it's a meaningful step for a car that had outgrown the old ceiling.\u003c\/p\u003e\n\n\u003ch4\u003eYour Old 5.9 Hubs Won't Work\u003c\/h4\u003e\n\n\u003cp\u003eImportant if you're upgrading rather than starting fresh.\u003c\/p\u003e\n\n\u003cp\u003eThis kit \u003cstrong\u003ewill not work with previous generation Level 5.9 wheel hubs\u003c\/strong\u003e. The hub design changed alongside the axle, which is why hubs are included in the kit rather than sold separately.\u003c\/p\u003e\n\n\u003cp\u003eSo if you're stepping up from a 5.9 setup, plan on replacing both. The hubs in this box are what these axles were designed around.\u003c\/p\u003e\n\n\u003ch4\u003e300M Throughout\u003c\/h4\u003e\n\n\u003cp\u003eThe material is why the rating exists.\u003c\/p\u003e\n\n\u003cp\u003e300M is a high-strength alloy used where failure isn't an acceptable outcome, and Driveshaft Shop uses it for both the axle bars and the splined wheel stub. The CV housing is 4340 chromoly in their modular design.\u003c\/p\u003e\n\n\u003cp\u003eOn a front-drive car putting four-digit power through the wheels while also steering, that combination is what stands between you and a very expensive afternoon.\u003c\/p\u003e\n\n\u003ch4\u003eWho This Is Actually For\u003c\/h4\u003e\n\n\u003cp\u003eBeing straight, because this is a serious purchase.\u003c\/p\u003e\n\n\u003cp\u003eDriveshaft Shop built this for the hardcore racer and for high-powered street cars that occasionally see track duty. That's a specific customer: someone making 900 to 1,000 wheel horsepower who has already broken things and knows exactly why they're here.\u003c\/p\u003e\n\n\u003cp\u003eIf your Si is stock or lightly modified, this is far more axle than the application needs and Driveshaft Shop's lower tiers will serve you better. If you're in the power range this was designed around, it's the current answer.\u003c\/p\u003e\n\n\u003ch4\u003eWhat's In The Kit\u003c\/h4\u003e\n\n\u003cul\u003e\n    \u003cli\u003e(2) Axles\u003c\/li\u003e\n    \u003cli\u003e(2) Hubs\u003c\/li\u003e\n    \u003cli\u003e(10) Extended wheel studs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eBacked by a one year warranty.\u003c\/p\u003e\n\n\u003ch4\u003eNon-Refundable After Installation\u003c\/h4\u003e\n\n\u003cp\u003eWorth stating clearly. Once these are installed they can't be returned, which is standard for driveline components at this level but worth knowing before you commit.\u003c\/p\u003e\n\n\u003cp\u003eConfirm your application and your power level 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 car making this much power, finding a clearance problem in the garage is considerably better than finding it on a pass.\u003c\/p\u003e\n\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\n\u003cp\u003e2006-2011 Honda Civic Si (8th generation)\u003c\/p\u003e\n\n\u003cp\u003ePart number 510535. For use with the OEM-sized 27-spline differential. \u003cstrong\u003eNot compatible with previous generation Level 5.9 wheel hubs.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWho Should Run These\u003c\/h4\u003e\n\n\u003cp\u003eThis is for the 8th gen Si build that's genuinely fast and has already found the limit of what lesser axles will take. Nine hundred to a thousand wheel horsepower, drag or competition use, and a car where a broken axle ends more than your weekend. It's the current generation of a design that's been proving itself for two decades. Confirm your setup, fit the hubs that come with it, and stop worrying about axles.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e 2006-2011 Honda Civic Si with OEM 27-spline differential. \u003cstrong\u003ePart number:\u003c\/strong\u003e 510535. \u003cstrong\u003eRating:\u003c\/strong\u003e over 1,000 wheel horsepower. \u003cstrong\u003eMaterials:\u003c\/strong\u003e 300M axle bars and splined wheel stub, 4340 chromoly modular CV housing. \u003cstrong\u003eIncludes:\u003c\/strong\u003e two axles, two hubs, ten extended wheel studs. \u003cstrong\u003eNot compatible with:\u003c\/strong\u003e previous generation Level 5.9 wheel hubs. \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\u003e2006-2011 Honda Civic Si Coupe\u003cbr\u003e2007-2011 Honda Civic Si Sedan\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":47500061704226,"sku":"DSS-510535","price":2299.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/DSS-510535_2y4i.png?v=1789063881","url":"https:\/\/www.hybrid-racing.com\/products\/driveshaft-shop-1000-hp-rated-axle-hub-kit-06-11-civic-si","provider":"Hybrid Racing","version":"1.0","type":"link"}