{"product_id":"mcs516300","title":"MCS Breaker Weight Spring Set. Standard – 1970–1999 Big Twin; 1971–2003 XL…","description":"\u003ch2\u003eMCS Breaker Weight Spring Set. Standard – 1970–1999 Big Twin; 1971–2003 XL…\u003c\/h2\u003e\n\u003cp\u003eWith standard springs for stock advance curve; best for most OEM applications. OEM replacement reference 32605-70 (standard strength springs). Note: Using stronger than stock springs will give a slower advance curve and can be used to solve detonation (pinging) issues in high compression engines or poor fuel. Note: 516300 is standard replacement; 516301 is heavy duty; 516598 is extreme duty. Mixing different spring strengths will give additional fine-tuning options. Note: Stronger than stock springs may require carburetor adjustment.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003e70-99 Big Twin (Excl. TC); 71-03 XL Sportster (NU). With mechanical advanced ignition\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e MCS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e ELECTRICAL \u0026gt; ADVANCE UNITS AND PARTS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit:\u003c\/strong\u003e 2P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct code:\u003c\/strong\u003e 516300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MCS","offers":[{"title":"Default Title","offer_id":57377095123331,"sku":"MCS516300","price":2.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1329\/4265\/files\/516300k_a52fa302-0242-4879-a17a-235755b7acdf.jpg?v=1775668553","url":"https:\/\/hogparts.com\/products\/mcs516300","provider":"Hogparts UK Ltd","version":"1.0","type":"link"}