{"product_id":"riaction-gp1-coilovers-for-2004-2009-mazda-mazdaspeed-3","title":"Riaction GP1 Coilovers for 2004-2009 Mazda Mazdaspeed 3","description":"\u003cp\u003eThe Riaction GP1 Coilovers for the 2004-2013 Mazda Mazdaspeed 3 deliver a premium, adjustable suspension upgrade built for drivers who want more from their Mazdaspeed 3 than the factory setup can offer. These Mazda Mazdaspeed 3 coilovers are engineered to pair street comfort with canyon and track capability, giving you the stance, handling, and adjustability you've been chasing without compromising daily driveability.\u003c\/p\u003e\u003cp\u003eGP1 Series Technology: The GP1 uses a digressive piston design that delivers firmer low-speed damping for flatter cornering and sharper response, while softening at higher shaft velocities to absorb bumps. If you want more control than a linear coilover without sacrificing ride quality, this is the set.\u003c\/p\u003e\n\u003cp\u003eEvery GP1 set features a monotube damper with 32 levels of damping adjustment, so you can tune ride quality to match the road, the weather, or your driving mood. Full-length ride-height adjustment separates preload from ride height — meaning you can drop the Mazdaspeed 3 to the height you want while preserving spring travel and shock stroke. Riaction coilovers for the 2004-2013 Mazda Mazdaspeed 3 are fully rebuildable and backed by a 2-year warranty, making the GP1 a long-term suspension investment rather than a disposable upgrade.\u003c\/p\u003e\n\u003ch3\u003eGP1 Series Technology\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMonotube linear damper with seamless 52mm electroplated carbon steel body\u003c\/li\u003e\n\u003cli\u003e32-level damping adjustment (1-Way)\u003c\/li\u003e\n\u003cli\u003e44mm CNC-machined 6061 aluminum high-flow piston\u003c\/li\u003e\n\u003cli\u003e20mm piston rod for MacPherson applications \/ 14mm for non-MacPherson\u003c\/li\u003e\n\u003cli\u003eSAE9254 cold-wound linear main springs\u003c\/li\u003e\n\u003cli\u003eMulti-thickness valving shims for consistent damping\u003c\/li\u003e\n\u003cli\u003ePolyurethane oil seals and 7.5W suspension fluid\u003c\/li\u003e\n\u003cli\u003eLow-gas-pressure design for improved compliance\u003c\/li\u003e\n\u003cli\u003eFully rebuildable — built to be serviced, not replaced\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFull-length ride-height adjustment (preload-independent)\u003c\/li\u003e\n\u003cli\u003e32 levels of damping adjustment\u003c\/li\u003e\n\u003cli\u003eFront camber adjustment via pillowball top mounts\u003c\/li\u003e\n\u003cli\u003eOptional Swift Springs upgrade (sold separately)\u003c\/li\u003e\n\u003cli\u003e2-year limited warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe GT1 uses a linear piston — good low-speed control for body roll, turn-in, and weight transfer, with damping that follows a predictable curve through bumps. That balance makes it the right call for street, canyon, and occasional track days. The GP1 runs a digressive piston that sharpens low-speed response with higher initial resistance for flatter cornering, then softens at higher shaft velocities — a blow-off behavior that relieves harshness over potholes, curbs, and expansion joints. The GP1 is built for track-focused driving, autocross, and aggressive street use where you want the extra bite under load.\u003c\/p\u003e\n\u003cp style=\"margin-top: 1.25em;\"\u003eShort version: choose GT1 if you want the best daily-street-track balance — typically in stock and ship-ready. Choose GP1 if you want tighter response under load and don't mind the lead time on a built-to-order digressive tune.\u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003ctable class=\"table table-striped table-primary\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMA-004-LT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Name\u003c\/td\u003e\n\u003ctd\u003eRiaction GP1 Coilovers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle\u003c\/td\u003e\n\u003ctd\u003e2004-2013 Mazda Mazdaspeed 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment Type\u003c\/td\u003e\n\u003ctd\u003e1-Way\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRide-Height Adjustable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Rate - Front\u003c\/td\u003e\n\u003ctd\u003e6 Kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpring Rate - Rear\u003c\/td\u003e\n\u003ctd\u003e4.5 Kg\/mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Mounts - Front\u003c\/td\u003e\n\u003ctd\u003ePillowball with camber plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Mounts - Rear\u003c\/td\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamber Plates - Front\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamber Plates - Rear\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuspension Design - Front\u003c\/td\u003e\n\u003ctd\u003eTrue Coilover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuspension Design - Rear\u003c\/td\u003e\n\u003ctd\u003eDivorced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch5\u003eVehicle Fitment\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e2004 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003cli\u003e2005 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003cli\u003e2006 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003cli\u003e2007 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003cli\u003e2008 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003cli\u003e2009 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003cli\u003e2010 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003cli\u003e2011 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003cli\u003e2012 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003cli\u003e2013 Mazda Mazdaspeed 3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Riaction","offers":[{"title":"Default Title","offer_id":40986252083260,"sku":"MA-004-LT-GP1","price":1569.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0000\/2183\/files\/riaction-gp1-coilovers-for-2004-2009-mazda-mazdaspeed-3-ma-001-gp1-1194410793.jpg?v=1769618618","url":"https:\/\/www.springrates.com\/products\/riaction-gp1-coilovers-for-2004-2009-mazda-mazdaspeed-3","provider":"SPRINGRATES®","version":"1.0","type":"link"}