{"product_id":"atomic-performance-valve-springs-stage-1-5-ford-barra-dohc","title":"Atomic - Barra Valve Springs","description":"\u003ch2 data-start=\"238\" data-end=\"362\"\u003e\u003cstrong data-start=\"251\" data-end=\"362\"\u003eAtomic Performance Valve Springs – Stage 1-5 | Ford Barra DOHC | Ovate Wire\u003cbr\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFactory valve springs are designed for standard RPM and low boost. As you increase power, valve float becomes the enemy. But simply installing \"stiffer\" springs isn't enough—if those springs vary in pressure, they create uneven harmonics that can destroy your engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUnequal spring pressure kills timing systems.\u003c\/strong\u003e\u003cspan\u003e Just like mismatched injectors cause rough idle, mismatched springs cause \"jerky\" resistance on the camshaft. This uneven load whips straight down the timing chain, in some cases timed badly enough that it snaps guides and stretches chains. That's why Atomic springs are \u003c\/span\u003e\u003cstrong\u003ebench tested and matched to +\/- 1lb\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWe treat valve springs like precision instruments. Every single Atomic spring is individually bench-tested and grouped into matched sets. Using advanced \u003cstrong\u003eOvate Wire\u003c\/strong\u003e technology*, we can achieve higher lift and pressure in a smaller package, ensuring your valvetrain remains stable from idle to 8000+ RPM.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eChoose Your Stage\u003c\/h2\u003e\n\u003cp\u003eSelect the correct spring pressure for your boost and RPM goals.\u003c\/p\u003e\n\u003cdiv class=\"atomic-card-grid\"\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eStage 1\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e80-90lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Boost:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e20psi max\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eStage 2\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e90-100lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Boost:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e25psi max\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e*Ovate Wire\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eStage 3\u003cbr\u003e(Most popular)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e100-110lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Boost:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e35psi max\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e*Ovate Wire\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eStage 4\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e~125lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Boost:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e35+ psi\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e*Ovate Wire\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003ch3\u003eStage 5\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e~145lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Boost:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e35+ psi\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e*Ovate Wire\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003e*Stage 1 springs do not utilize ovate wire technology.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eTech Specs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHigh-Tensile Wire (Ovate on Stage 2-5)\u003cbr\u003e\u003cstrong\u003eMatching Tolerance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e+\/- 1lb (Bench Tested)\u003cbr\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWorks with Factory, Titanium, or Chromoly Retainers\u003cbr\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFord Barra DOHC 4.0L (BA-FGX)\u003c\/p\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul class=\"atomic-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Installed Height:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAlways verify installed height during assembly to ensure correct seat pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifter Preload:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHigh-pressure springs (Stage 3+) may require checking lifter bleed-down rates or preload adjustments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming Chain Load:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUpgrading valve springs increases the load on your timing chain by up to 40%. We strongly recommend installing an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAtomic Heavy Duty Timing Chain Kit\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ealongside these springs to prevent failure.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Atomic Performance Products","offers":[{"title":"Stage 1 | 80-90lbs | 20psi max","offer_id":46659332505845,"sku":"306800","price":400.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 2 | 90-100lbs | 25psi max | Ovate wire","offer_id":46659332538613,"sku":"306801","price":549.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 3 | 100-110lbs | 35psi max | Ovate wire","offer_id":46659332571381,"sku":"306802","price":549.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 4 | ~125lbs | 35+ psi | Ovate wire","offer_id":46659332604149,"sku":"306803","price":549.0,"currency_code":"AUD","in_stock":true},{"title":"Stage 5 | ~145lbs | 35+ psi | Ovate wire","offer_id":46659332636917,"sku":"306803-145","price":620.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0018\/4257\/7517\/files\/Atomic_Barra_Valve_Springs_Stage_1-5_Matched_Sets_2000x_a3b89bbc-8adb-4b60-a8da-263f350485e2.jpg?v=1778721896","url":"https:\/\/golebysparts.au\/products\/atomic-performance-valve-springs-stage-1-5-ford-barra-dohc","provider":"Goleby's Parts","version":"1.0","type":"link"}