{"product_id":"gp-1-digressive-lexus-gs300-98-05","title":"Riaction GP-1 Digressive Coilovers Lexus GS300 (1998–2005)","description":"\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eUpgrade the suspension on your 1998–2005 Lexus GS300 with the Riaction GP-1 Digressive Coilover Kit. Designed for street-driven performance builds, the GP-1 combines digressive valving technology, 32 levels of damping adjustment, and full-length ride height adjustment to deliver sharper handling while maintaining the refinement expected from the GS chassis.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe GP-1's digressive damping profile provides increased damping force during lower-speed suspension movements to improve cornering stability, reduce body roll, and provide more direct chassis feedback. During faster suspension movements caused by bumps and uneven pavement, the damping characteristics help maintain compliance for a controlled, responsive ride without unnecessary harshness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigressive Valving Technology:\u003c\/strong\u003e Provides firm low-speed damping control for improved cornering response, reduced body movement, and greater driver feedback while maintaining compliance over uneven surfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e32-Level Damping Adjustment:\u003c\/strong\u003e Fine-tune damper response through 32 settings to suit your driving style, road conditions, and suspension setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFull-Length Ride Height Adjustment:\u003c\/strong\u003e Allows you to lower the GS300 and dial in your preferred stance while providing greater flexibility when setting up suspension travel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10K Front \/ 8K Rear Spring Rates:\u003c\/strong\u003e Balanced spring rates provide increased suspension control and responsive handling while remaining suitable for street-oriented builds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Damper Design:\u003c\/strong\u003e Provides consistent damping characteristics and efficient heat dissipation during spirited driving.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e52mm Carbon Steel Shock Bodies:\u003c\/strong\u003e Seamless electroplated carbon steel construction provides strength and long-term durability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e44mm High-Flow Aluminum Pistons:\u003c\/strong\u003e CNC-machined 6061 aluminum pistons provide precise and consistent damper operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSAE9254 Cold-Wound Springs:\u003c\/strong\u003e High-strength spring construction designed to provide consistent suspension performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLow-Gas Pressure Design:\u003c\/strong\u003e Engineered to provide controlled damper response while maintaining street-oriented ride characteristics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully Rebuildable:\u003c\/strong\u003e Serviceable damper construction allows the coilovers to be rebuilt to help extend their usable service life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(2) Front Riaction GP-1 coilovers\u003c\/li\u003e\n\u003cli\u003e(2) Rear Riaction GP-1 coilovers\u003c\/li\u003e\n\u003cli\u003eSpanner wrenches\u003c\/li\u003e\n\u003cli\u003eDamping adjustment knobs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLexus GS300 (1998–2005)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSeries: GP-1 Digressive\u003c\/li\u003e\n\u003cli\u003eDamper Design: Monotube\u003c\/li\u003e\n\u003cli\u003eValving: Digressive\u003c\/li\u003e\n\u003cli\u003eDamping Adjustment: 32 levels\u003c\/li\u003e\n\u003cli\u003eRide Height Adjustment: Full-length\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 10K\u003c\/li\u003e\n\u003cli\u003eRear Spring Rate: 8K\u003c\/li\u003e\n\u003cli\u003eShock Body: 52mm seamless electroplated carbon steel\u003c\/li\u003e\n\u003cli\u003eMcPherson Piston Rod Diameter: 20mm\u003c\/li\u003e\n\u003cli\u003eNon-McPherson Piston Rod Diameter: 14mm\u003c\/li\u003e\n\u003cli\u003eMain Piston: 44mm high-flow CNC 6061 aluminum\u003c\/li\u003e\n\u003cli\u003eFloating Piston: CNC 6061 aluminum\u003c\/li\u003e\n\u003cli\u003eOil Seal: Polyurethane\u003c\/li\u003e\n\u003cli\u003eSpring Material: SAE9254 cold-wound steel\u003c\/li\u003e\n\u003cli\u003eValving Shims: Multi-thickness\u003c\/li\u003e\n\u003cli\u003eSuspension Fluid: 7.5W compounded suspension fluid\u003c\/li\u003e\n\u003cli\u003eDamper Construction: Fully rebuildable\u003c\/li\u003e\n\u003cli\u003eWarranty: 2-year factory warranty against manufacturing defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits Lexus GS300 models from 1998–2005.\u003c\/li\u003e\n\u003cli\u003eFactory spring rates are 10K front and 8K rear.\u003c\/li\u003e\n\u003cli\u003eFeatures Riaction GP-1 digressive damper valving.\u003c\/li\u003e\n\u003cli\u003eFeatures 32 levels of damping adjustment.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended.\u003c\/li\u003e\n\u003cli\u003eA four-wheel alignment is recommended after installation or ride height adjustment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose Riaction GP-1 Digressive Coilovers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Riaction GP-1 is designed for GS300 owners who want a more responsive suspension setup without simply making the ride excessively stiff. Digressive valving provides increased damping control during lower-speed suspension movements associated with cornering, braking, acceleration, and weight transfer while maintaining compliance during faster damper movements.\u003c\/p\u003e\n\u003cp\u003eCombined with 32-level damping adjustment, full-length ride height adjustment, 10K front and 8K rear spring rates, and fully rebuildable monotube construction, the GP-1 provides a highly adjustable suspension package for street-driven GS300 performance builds.\u003c\/p\u003e","brand":"Riaction Performance Shocks","offers":[{"title":"Default Title","offer_id":52141483360577,"sku":"LX-003-D-SS","price":1250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0835\/9362\/5921\/files\/riaction-gp-1-digressive-coilovers-lexus-gs300-1998-2005-8000972.jpg?v=1787887580","url":"https:\/\/lunaticsco.com\/products\/gp-1-digressive-lexus-gs300-98-05","provider":"LunaticsCo","version":"1.0","type":"link"}