{"product_id":"qa1-circle-track-shock-piston-bjgm-9057-312","title":"QA1 Circle Track Shock Piston | 35mm Large Body Linear Digressive | 9057-312","description":"\u003cp\u003eThis QA1 35mm circle track shock piston is used in QA1 large body shocks and delivers flat linear compression with digressive rebound. It accepts up to 0.056 inch of shim stack preload to build low-speed control without excessive high-speed force, helping maintain grip over surface irregularities. It is used on both dirt and asphalt cars, and the shim stack preload, shim thickness and diameter can all be tuned to tailor the shock force curve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: 35mm circle track shock piston\u003c\/li\u003e\n\u003cli\u003eFor QA1 large body shocks\u003c\/li\u003e\n\u003cli\u003eCompression: flat linear\u003c\/li\u003e\n\u003cli\u003eRebound: digressive\u003c\/li\u003e\n\u003cli\u003eAccepts up to 0.056 in of shim stack preload\u003c\/li\u003e\n\u003cli\u003eTunable via shim stack preload, thickness and diameter\u003c\/li\u003e\n\u003cli\u003eUsed on dirt and asphalt cars\u003c\/li\u003e\n\u003cli\u003ePart number: 9057-312\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat shocks does the 9057-312 piston fit?\u003c\/h5\u003e\u003cp\u003eIt is a 35mm piston for QA1 large body circle track shocks.\u003c\/p\u003e\u003ch5\u003eWhat valving characteristics does it provide?\u003c\/h5\u003e\u003cp\u003eIt provides flat linear compression and digressive rebound with up to 0.056 inch of shim stack preload for low-speed control.\u003c\/p\u003e\u003ch5\u003eCan the force curve be tuned?\u003c\/h5\u003e\u003cp\u003eYes. The shim stack preload, shim thickness and diameter can all be adjusted to tailor the shock force curve for dirt or asphalt.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What shocks does the 9057-312 piston fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is a 35mm piston for QA1 large body circle track shocks.\"}}, {\"@type\": \"Question\", \"name\": \"What valving characteristics does it provide?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It provides flat linear compression and digressive rebound with up to 0.056 inch of shim stack preload for low-speed control.\"}}, {\"@type\": \"Question\", \"name\": \"Can the force curve be tuned?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The shim stack preload, shim thickness and diameter can all be adjusted to tailor the shock force curve for dirt or asphalt.\"}}]}\u003c\/script\u003e","brand":"QA1","offers":[{"title":"Default Title","offer_id":42679361634352,"sku":"BJGM_9057-312","price":68.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/c8229e04de561.jpg?v=1767147184","url":"https:\/\/berryperformancesales.com\/products\/qa1-circle-track-shock-piston-bjgm-9057-312","provider":"Berry Performance Sales","version":"1.0","type":"link"}