{"product_id":"sprindex-shock-spring-sprindex-downhill-490-560-lbs-1","title":"Shock Spring Sprindex Downhill 490-560 lbs","description":"\u003cp\u003e\u003cstrong\u003eSprindex Adjustable Downhill Coil Spring (490–560 lbs \/ 75mm Stroke)\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eAchieve the ultimate rear suspension setup without the hassle of swapping traditional coils. The Sprindex Downhill Coil Spring brings tool-free, micro-adjustable spring rate tuning to your coil shock, allowing you to fine-tune your sag, adapt to changing trail conditions, or stiffen your rate for long climbs. Engineered from super high-tensile spring steel and lightweight glass-reinforced polymer, Sprindex delivers custom coil performance in a lightweight package.\u003c\/p\u003e\r\n\u003ch3\u003eHow Sprindex Works\u003c\/h3\u003e\r\n\u003cp\u003eSpring rate is determined by active coil length. By turning the Sprindex dial, the system alters the number of active coils available for deflection—adjusting your spring rate without changing coil length or affecting your preload setting. The selected spring rate is clearly displayed through the window on the dial, giving you precise control over your suspension's performance.\u003c\/p\u003e\r\n\u003ch3\u003eProgressive End-Stroke Support\u003c\/h3\u003e\r\n\u003cp\u003eWhile traditional coils are strictly linear, Sprindex features a progressive spring rate through the final 20% of its stroke (80–100%). This provides supple small-bump traction and plushness through the initial travel, combined with ramped-up bottom-out resistance for big hits, heavy drops, and linear frame linkages.\u003c\/p\u003e\r\n\u003ch3\u003eKey Features\u003c\/h3\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eTool-Free Adjustment:\u003c\/strong\u003e Easily turn the dial to adjust spring rate anywhere between 490 lbs\/in and 560 lbs\/in.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eSuper High-Tensile Steel:\u003c\/strong\u003e Stronger and lighter than standard coil springs, reducing overall coil mass while handling high stress.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eLow-Friction Delrin Adapters:\u003c\/strong\u003e Includes 5 performance adapters to ensure smooth fitment across a wide range of shock models while preventing coil-windup and preload ring self-adjustment.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eIndependent Preload:\u003c\/strong\u003e Adjusting spring rate does not affect preload, ensuring your sag is always achieved through proper rate rather than excessive preloading.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eSpring Rate Range:\u003c\/strong\u003e 490–560 lbs\/in (micro-adjustable)\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e 75 mm\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eLength (without adapters):\u003c\/strong\u003e 160 mm\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 563 g\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Super high-tensile steel coil, glass-reinforced polymer dial assembly, Delrin adapters\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits most major coil shock brands using included adapters (RockShox performance washer included)\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Sprindex","offers":[{"title":"Default Title","offer_id":50748552544304,"sku":"SD60500-RP","price":269.0,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0031\/4012\/4739\/files\/75mm_Sprindex_Black_3a44d92e-e0ba-44be-916a-fdce2f3b7981.jpg?v=1791294422","url":"https:\/\/www.moto1.nz\/products\/sprindex-shock-spring-sprindex-downhill-490-560-lbs-1","provider":"Moto1","version":"1.0","type":"link"}