{"product_id":"st-xta-coilovers-vauxhall-astra-h-04-13","title":"ST XTA Coilovers Vauxhall Astra H 04-13","description":"\u003ch2\u003eST XTA Coilovers for Vauxhall Astra H (2004-2013) – 20-60 mm Lower, Height \u0026amp; Rebound Adjustable, Camber Top Mounts\u003c\/h2\u003e\n\u003cp\u003eThis ST XTA kit replaces the standard springs and dampers on the Vauxhall Astra H (2004-2013) with a height-adjustable coilover set. It lowers the car by approx. 30-60 mm at the front and 20-45 mm at the rear, which sharpens the steering, cuts body roll and closes up the wheel arch gap. The ride height is set on threaded struts, so you can go for a subtle drop or use the full approved range, and change it again later.\u003c\/p\u003e\n\u003cp\u003eThe ST XTA is ST's fast road and track day coilover. As well as stepless height adjustment and 16-click rebound damping, it comes with Unibal (spherical bearing) top mounts on the front axle, so you can adjust front camber after the coilovers are fitted to get more of the tyre on the road in corners and sharper turn-in. It uses a race spring system: a linear main spring for consistent, predictable behaviour, supported where needed by a helper spring that keeps the main spring seated at full droop. ST is part of the KW automotive group, and the kit is developed and made in Germany using KW engineering.\u003c\/p\u003e\n\u003cp\u003eThis kit is for the Vauxhall Astra H (Saloon \/ Estate) with the 1.2, 1.3 CDTI, 1.4, 1.6, 1.6 Turbo, 1.6 i 16V, 1.7 CDTI, 1.8 and more, up to a 1075 kg front axle load. Check the Fitment section below before ordering.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront lowering:\u003c\/strong\u003e approx. 30-60 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear lowering:\u003c\/strong\u003e approx. 20-45 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax front axle load:\u003c\/strong\u003e up to 1075 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax rear axle load:\u003c\/strong\u003e up to 1000 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight adjustment:\u003c\/strong\u003e Stepless, on threaded strut housings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum ride height (wheel hub centre to arch edge):\u003c\/strong\u003e front 325 mm, rear 335 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamping:\u003c\/strong\u003e Adjustable rebound, 16 clicks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSprings:\u003c\/strong\u003e Linear main springs with helper springs where needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop mounts:\u003c\/strong\u003e Front Unibal mounts with camber adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrut housings:\u003c\/strong\u003e Galvanised steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproval:\u003c\/strong\u003e Parts certificate (German §19.3)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLowering figures are ST's, measured against the standard car. The actual drop varies with engine, equipment and tolerances on each car, and the springs settle slightly after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFront Unibal top mounts with camber adjustment after fitting\u003c\/li\u003e\n\u003cli\u003e16-click adjustable rebound damping, delivered with a base setting for this vehicle\u003c\/li\u003e\n\u003cli\u003eStepless ride height adjustment on a coarse, dirt-resistant trapezoidal thread\u003c\/li\u003e\n\u003cli\u003eRace spring system with linear main springs for consistent, predictable handling\u003c\/li\u003e\n\u003cli\u003eGalvanised, multi-sealed steel strut housings for long-term corrosion protection\u003c\/li\u003e\n\u003cli\u003eComposite spring perches with stainless steel inserts that stay easy to adjust for years\u003c\/li\u003e\n\u003cli\u003eDust covers and bump stops protect the damper seals\u003c\/li\u003e\n\u003cli\u003eDeveloped and built in Germany, based on KW engineering\u003c\/li\u003e\n\u003cli\u003eSupplied with a parts certificate and fitting instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's in the Kit?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 x height-adjustable front coilover struts with springs\u003c\/li\u003e\n\u003cli\u003e2 x rear dampers\u003c\/li\u003e\n\u003cli\u003e2 x rear springs with height-adjustable spring seats\u003c\/li\u003e\n\u003cli\u003e2 x front Unibal top mounts with camber adjustment\u003c\/li\u003e\n\u003cli\u003eComposite spring perches with stainless steel inserts\u003c\/li\u003e\n\u003cli\u003eDust covers and bump stops\u003c\/li\u003e\n\u003cli\u003eParts certificate and fitting instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e the photos are ST's own images of this kit. Small details such as brackets can differ from the photos.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVauxhall Astra H A04, A (Jan 2004 to Jan 2011)\u003c\/li\u003e\n\u003cli\u003eVauxhall Astra H Estate A04, A (Aug 2004 to Oct 2010)\u003c\/li\u003e\n\u003cli\u003eVauxhall Astra H Saloon A04, A (Feb 2007 to Dec 2013)\u003c\/li\u003e\n\u003cli\u003eVauxhall Astra H TwinTop A04, A (Sep 2005 to Dec 2013)\u003c\/li\u003e\n\u003cli\u003eVauxhall Astra Mk V H (Jan 2004 to Mar 2011)\u003c\/li\u003e\n\u003cli\u003eVauxhall Astra Mk V H (Aug 2004 to Oct 2012)\u003c\/li\u003e\n\u003cli\u003eVauxhall Astra Mk V H (Sep 2005 to Aug 2011)\u003c\/li\u003e\n\u003cli\u003eEngines: 1.2, 1.3 CDTI, 1.4, 1.6, 1.6 Turbo, 1.6 i 16V, 1.7 CDTI, 1.8, 1.9 CDTI, 1.9 CDTI 16V, 2.0, 2.0 Turbo\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e Cars with self-levelling suspension, unless the levelling system can be reset to suit the new ride height. Also not for other generations or body styles, which need their own kit, such as \u003ca href=\"\/products\/st-xta-coilovers-vauxhall-astra-gtc-h-05-10\"\u003eST XTA Coilovers Vauxhall Astra GTC H 05-10\u003c\/a\u003e, \u003ca href=\"\/products\/st-xta-coilovers-vauxhall-astra-twintop-h-06-13\"\u003eST XTA Coilovers Vauxhall Astra TwinTop H 06-13\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdaptive dampers:\u003c\/strong\u003e if your car has electronically controlled dampers, the system must be switched off with a cancellation kit (sold separately) to stop warning lights and fault codes: electronic damping: KW cancellation kit (part no. 68510175) (68510175 for all except OPC\/VXR models, 68510228 for OPC\/VXR); electronic damping: KW cancellation kit (part no. 68510228) (68510175 for all except OPC\/VXR models, 68510228 for OPC\/VXR).\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eFitting means removing the original struts, springs and dampers and fitting the ST units in their place. We recommend a qualified workshop experienced with coilovers. The Unibal top mounts replace the original front top mounts. Set the ride height within the approved range, tighten the suspension bolts with the car's weight on its wheels, and torque everything to the manufacturer's figures. A four-wheel alignment is required once the car is at its final ride height. Re-check the height and alignment after the first few hundred miles, once the springs have settled.\u003c\/p\u003e\n\u003cp\u003eDownload ST's documents for this kit: \u003ca href=\"https:\/\/docs.kwsuspension.de\/ea-STXTA-h18260830.pdf\" target=\"_blank\" rel=\"noopener\"\u003eFitting instructions (PDF)\u003c\/a\u003e, \u003ca href=\"https:\/\/docs.kwsuspension.de\/ga-STXTA-60830_1137-14.pdf\" target=\"_blank\" rel=\"noopener\"\u003eParts certificate (PDF)\u003c\/a\u003e, \u003ca href=\"https:\/\/docs.kwsuspension.de\/es-STESAV2-68577714.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDamper adjustment guide (PDF)\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eSet the front camber on the Unibal top mounts before the alignment, and start with the rebound adjusters on ST's base setting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore you start:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eWith the factory wheels and tyres, wheel spacers may be needed to give enough clearance to the coilovers.\u003c\/li\u003e\n\u003cli\u003eOn the original wheel sizes, wheel spacers may be needed to keep enough clearance.\u003c\/li\u003e\n\u003cli\u003eDisconnect any ride height sensors (headlight levelling or self-levelling) before removing the old struts.\u003c\/li\u003e\n\u003cli\u003eClean the threads before adjusting, and start with the height adjusters in the middle of their range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAfter fitting:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDo not go below ST's minimum height, measured from the wheel hub centre to the wheel arch edge: front 325 mm, rear 335 mm.\u003c\/li\u003e\n\u003cli\u003eExpect the car to settle a further 5-10 mm once it has been driven, then re-check the height.\u003c\/li\u003e\n\u003cli\u003eCheck there is at least 5 mm clearance between the tyres and the suspension through the full steering and suspension travel.\u003c\/li\u003e\n\u003cli\u003eHave the headlight aim reset, along with any other height-dependent systems.\u003c\/li\u003e\n\u003cli\u003eESP\/ABS warning lights can appear after fitting. Some clear after a short drive, others need full steering lock both ways or a reset with a diagnostic tool.\u003c\/li\u003e\n\u003cli\u003eOn cars with radar or camera driver assistance systems, have the calibration checked after lowering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eIf you only need height adjustment, the \u003ca href=\"\/products\/st-x-coilovers-vauxhall-astra-h-04-13\"\u003eST X Coilovers Vauxhall Astra H 04-13\u003c\/a\u003e has fixed damping and costs less.\u003c\/p\u003e\n\u003ch3\u003eWill this fit my Vauxhall Astra H?\u003c\/h3\u003e\n\u003cp\u003eIt fits the Vauxhall Astra H (2004-2013) with the 1.2, 1.3 CDTI, 1.4, 1.6, 1.6 Turbo, 1.6 i 16V and more. Check the Fitment section for the body styles and exclusions, or send us your registration and we will check.\u003c\/p\u003e\n\u003ch3\u003eHow low will my Vauxhall Astra H sit?\u003c\/h3\u003e\n\u003cp\u003eST quotes a drop of approx. 30-60 mm at the front and 20-45 mm at the rear compared with standard. The exact drop varies from car to car with engine, equipment and tolerances. ST also sets a minimum: the distance from the wheel hub centre to the wheel arch edge must stay above approx. 325 mm at the front and 335 mm at the rear.\u003c\/p\u003e\n\u003ch3\u003eCan I adjust the damping?\u003c\/h3\u003e\n\u003cp\u003eYes. The rebound adjuster has 16 clicks and the kit arrives on ST's base setting for this car. Turn towards firm for tighter body control or towards soft for a more comfortable ride.\u003c\/p\u003e\n\u003ch3\u003eWill the ST XTA make my Vauxhall Astra H ride harshly?\u003c\/h3\u003e\n\u003cp\u003eThe XTA is the sportiest ST kit, with linear race springs, so it is noticeably firmer than standard. The 16-click rebound adjuster lets you take some of the edge off for road use, but it is aimed at fast road and track day cars.\u003c\/p\u003e\n\u003ch3\u003eDo I need an alignment after fitting?\u003c\/h3\u003e\n\u003cp\u003eYes. Changing the ride height changes camber and toe, so a full four-wheel alignment is needed once the car is at its final height, and again after any later change. With the XTA you can also set front camber on the top mounts.\u003c\/p\u003e\n\u003ch3\u003eMy car has adaptive dampers. Will this kit fit?\u003c\/h3\u003e\n\u003cp\u003eOnly with the correct KW cancellation kit, which switches off the electronic damper control so no warning lights appear. The kit number is in the Fitment section. Some versions are not suitable for adaptive dampers at all, so contact us if you are unsure.\u003c\/p\u003e\n\u003ch3\u003eWill my standard wheels fit?\u003c\/h3\u003e\n\u003cp\u003eOn the original wheel sizes, ST says wheel spacers may be needed to keep enough clearance. Aftermarket wheels should be checked for clearance at your chosen ride height.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal in the UK?\u003c\/h3\u003e\n\u003cp\u003eYes. It is designed for road use and comes with a German parts certificate. Keep the ride height within ST's approved range and tell your insurer about the modification.\u003c\/p\u003e\n\u003ch3\u003eIs it covered by a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes, ST covers it against defects in materials and workmanship. If a part ever needs replacing, contact us with your vehicle details and order number.\u003c\/p\u003e","brand":"ST Suspensions","offers":[{"title":"Saloon \/ Estate, Front Axle Up To 1075kg","offer_id":58920377188735,"sku":"ST-18260830","price":1210.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6251\/6693\/files\/ST-18260830_001-1000_94777e00-690f-4a41-a18e-8a8e85658a36.jpg?v=1792771742","url":"https:\/\/coilovers.co.uk\/products\/st-xta-coilovers-vauxhall-astra-h-04-13","provider":"Coilovers.co.uk","version":"1.0","type":"link"}