{"product_id":"atomic-barra-heavy-duty-timing-chain-kits","title":"Atomic Barra Heavy Duty Timing Chain Kits","description":"\u003cdiv class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eThe Problem\u003c\/h2\u003e\n\u003cp\u003eThe factory Barra timing system was never designed for high RPM, big cams, or heavy valve springs. Under load, stock chains stretch, plastic guides shatter, and standard crank sprockets wear out. The result?\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCatastrophic engine failure.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e💡 DID YOU KNOW?\u003c\/strong\u003e\n\u003cp\u003eJust upgrading valve springs alone will add\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e~40% increase in load\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon the timing chain compared to standard. More aggressive, higher lift cams add more yet again. The effect is amplified at higher RPM.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eThe Atomic Solution\u003c\/h2\u003e\n\u003cp\u003eA fully engineered, race-proven timing solution. We don't just replace parts; we upgrade the entire architecture. From our\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eunbreakable billet guides\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto our heavy-duty chains (nearly 2x factory strength), this kit is built to survive everything from a stock rebuild to a 2500hp monster without sacrificing NVH or reliability.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eThe Genuine Factory Ford tensioners are used exclusively in our kits\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eas they have proven to be the most reliable and durable option available currently. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/fe8d053b-b98d-4909-a700-f0230a004d3f_dab39723-5189-4e12-a315-307d1ad7004f.png?v=1759884258\" alt=\"\" width=\"378\" height=\"473\"\u003e\u003cbr\u003e\n\u003cdiv class=\"img-caption\"\u003eThe complete solution: Chain, Billet Guides, Sprockets, and Tensioner.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003cimg height=\"291\" width=\"437\" alt=\"Atomic Barra Heavy Duty Timing Chain Kit | Core Kit + Sprocket\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_Barra_Heavy_Duty_Timing_Chain_Kit_Core_Kit_Sprocket_2.jpg?v=1757497214\"\u003e\u003cbr\u003e\n\u003cdiv class=\"img-caption\"\u003eHeat-treated, case-hardened billet steel. Unbreakable.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e2. The \"Unbreakable\" Guide\u003c\/h2\u003e\n\u003cp\u003eThe factory timing chain guide on the tensioner side is made from cast iron and fits loosely on the pivot bolt compared to modern performance engines. We solved it by manufacturing our own tight tolerance guide from\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBillet Steel\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReprofiled Tip:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWe redesigned the tip geometry to prevent the common plastic failure found in other designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Treated:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCase-hardened for extreme durability and wear resistance against the tensioner piston\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh clearance \u003c\/strong\u003efrom specially chamfered shoulder to avoid contact with timing cover and guide breakage \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromoly Pivot:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes a Billet Chromoly pivot bolt with a nyloc nut to ensure it never backs out under vibration. The play between the factory pivot and guide has been significantly reduced to avoid misalignment and unwanted guide movement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003e3. HD Chain \u0026amp; Billet Sprocket\u003c\/h2\u003e\n\u003cp\u003eStrength where it counts. Our components are refined to handle the stress of high-lift cams and stiff valve springs.\u003c\/p\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy Duty Chain:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eApproximately\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2x the strength\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eof the factory chain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet Crank Sprocket:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCase-hardened heat-treated steel with tighter manufacturing tolerances to reduce vibration and wear from play and misalignment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Polish Chain Links:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe smoothest, high quality finish chains we've been able to find. This means less noise, less wear, less vibration through the whole system and engine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg height=\"304\" width=\"408\" alt=\"Atomic Barra Billet Crank Sprocket\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_Barra_Billet_Crank_Sprocket_1.jpg?v=1757503091\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg height=\"287\" width=\"431\" alt=\"Atomic Barra Heavy Duty Timing Chain – Ford Barra DOHC vs stock\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_Barra_Heavy_Duty_Timing_Chain_Ford_Barra_DOHC_vs_Stock.jpg?v=1760571675\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003ch2\u003eChoose Your Configuration\u003c\/h2\u003e\n\u003cdiv class=\"atomic-card-grid\"\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eBasic Kit (-B)\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eThe Essentials Upgrade.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003eBillet Curved Guide\u003c\/li\u003e\n\u003cli\u003eHD Timing Chain\u003c\/li\u003e\n\u003cli\u003eBillet Chromoly Pivot Bolt\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eComplete Kit (-C)\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eThe Total Solution (Most Popular).\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003eEverything in Basic Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlus:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBillet Crank Sprocket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlus:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGenuine OEM Ford Tensioner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlus:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll Guides, Bolts, Seals \u0026amp; Gaskets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eCore Kit (-P)\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eFor builders with their own sprocket\/tensioner.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003eHD Timing Chain\u003c\/li\u003e\n\u003cli\u003eAll Guides (Curved, Top, Straight)\u003c\/li\u003e\n\u003cli\u003eBillet Pivot Bolt\u003c\/li\u003e\n\u003cli\u003eMounting Bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atomic","offers":[{"title":"| -B | Basic | Billet Guide + Pivot + Chain","offer_id":46869872574622,"sku":null,"price":475.98,"currency_code":"AUD","in_stock":true},{"title":"| -P | Core | Guides Chain Bolts","offer_id":46869872607390,"sku":null,"price":578.19,"currency_code":"AUD","in_stock":true},{"title":"| -S | Core + Sprocket | No Tensioner","offer_id":46869872640158,"sku":null,"price":709.59,"currency_code":"AUD","in_stock":true},{"title":"| -T | Core + Tensioner | No Sprocket","offer_id":46869872672926,"sku":null,"price":861.44,"currency_code":"AUD","in_stock":true},{"title":"| -C | Complete | Everything!","offer_id":46869872705694,"sku":null,"price":1013.29,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0323\/6482\/2661\/files\/Atomic_Barra_Complete_Timing_Chain_Kit_600x_939e14b6-e717-4ab9-9bb9-c24e1c2d3edc.png?v=1779517060","url":"https:\/\/www.performanceheaven.com.au\/products\/atomic-barra-heavy-duty-timing-chain-kits","provider":"performanceheaven","version":"1.0","type":"link"}