{"title":"Audi - Valve springs","description":null,"products":[{"product_id":"2-5-tfsi-ea855-sport-valve-springs-set-bar-tek®","title":"2.5 TFSI EA855 Sport Valve Springs Set BAR-TEK®","description":"\u003cp\u003e\u003cstrong\u003eBAR-TEK® 2.5 TFSI EA855 Sport Valve Spring Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOriginal BAR-TEK® Sport valve spring kit for 2.5L TFSI engines, as found in Audi TT RS and Audi RS3 models.\u003c\/p\u003e\n\u003cp\u003eA high-quality solution for tuning enthusiasts: The BAR-TEK® Sport valve spring kit is made from hardened special steel and equipped with titanium spring retainers. The kit is suitable for all 2.5L TFSI engines (EA855 \/ EA855 evo) used in models such as Audi RS3 and TT RS.\u003c\/p\u003e\n\u003ch3\u003ePerformance and Benefits\u003c\/h3\u003e\n\u003cp\u003eThese valve springs feature an optimized spring rate, which improves engine response and reaction time. The titanium spring retainers lighten the valvetrain, allowing for higher boost pressure and increased RPMs without reliability issues.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eImproved and faster engine response\u003c\/li\u003e\n\u003cli\u003eAllows for higher RPMs\u003c\/li\u003e\n\u003cli\u003eLighter valvetrain due to titanium retainers\u003c\/li\u003e\n\u003cli\u003eExcellent stability at high RPMs\u003c\/li\u003e\n\u003cli\u003eSuitable for higher boost pressures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to upgrade to sport valve springs?\u003c\/h3\u003e\n\u003cp\u003eWhen increasing engine boost pressure or installing tuning camshafts (e.g., SCHRICK), the original valve springs are often no longer sufficient. This can result in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInadequate valve closure\u003c\/li\u003e\n\u003cli\u003eSpring breakage\u003c\/li\u003e\n\u003cli\u003eSevere engine damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBAR-TEK® sport valve springs eliminate these risks and ensure reliable operation in tuned engines.\u003c\/p\u003e\n\u003ch3\u003eDesign and Technology\u003c\/h3\u003e\n\u003cp\u003eThe valve springs are made from heat-treated special steel, which provides high strength and durability. Additionally:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpecial coating increases wear resistance\u003c\/li\u003e\n\u003cli\u003eGreater material thickness compared to standard springs\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOval shape\u003c\/strong\u003e allows for greater valve lift\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eConical design\u003c\/strong\u003e reduces mass and improves operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe optimized design prevents spring coil bind and ensures correct pre-tensioning in all situations. The result is a smoother-running engine and controlled boost pressure.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20 pcs valve springs (hardened steel)\u003c\/li\u003e\n\u003cli\u003e20 pcs valve spring retainers (titanium)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eL0 = 47.00 ± 0.30 mm\u003c\/li\u003e\n\u003cli\u003eF1 = 307 N @ 40.00 mm\u003c\/li\u003e\n\u003cli\u003eF2 = 748 N @ 30.00 mm\u003c\/li\u003e\n\u003cli\u003eSpring rate: 44.1 N\/mm (441 N @ 10 mm compression)\u003c\/li\u003e\n\u003cli\u003eLc = 23.00 mm (maximum)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003ch3\u003eAudi A3 \/ S3 \/ RS3\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8P, 8PA | model year 2003–2013\u003cbr\u003e2.5 TFSI (EA855)\u003cbr\u003eCEPA | 340 hp (250 kW)\u003c\/li\u003e\n\u003cli\u003e8V | model year 2012–2020\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDAZA | 400 hp (294 kW)\u003c\/li\u003e\n\u003cli\u003e8V | model year 2012–2020\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWA | 400 hp (294 kW)\u003c\/li\u003e\n\u003cli\u003e8V | model year 2012–2020\u003cbr\u003e2.5 TFSI (EA855)\u003cbr\u003eCZGB | 367 hp (270 kW)\u003c\/li\u003e\n\u003cli\u003e8Y | model year 2020–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eCZGB | 367 hp (270 kW)\u003c\/li\u003e\n\u003cli\u003e8Y | model year 2020–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDAZA | 400 hp (294 kW)\u003c\/li\u003e\n\u003cli\u003e8Y | model year 2020–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWA | 400 hp (294 kW)\u003c\/li\u003e\n\u003cli\u003e8Y | model year 2020–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWB | 390 hp (287 kW)\u003c\/li\u003e\n\u003cli\u003e8Y | model year 2020–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWC | 400 hp (294 kW)\u003c\/li\u003e\n\u003cli\u003e8Y | model year 2020–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWD | 407 hp (299 kW)\u003c\/li\u003e\n\u003cli\u003e8Y | model year 2020–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDXHB | 400 hp (294 kW)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAudi Q3 \/ RS Q3\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2nd generation (F3) | model year 2018–2025\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDAZA | 400 hp (294 kW)\u003c\/li\u003e\n\u003cli\u003e\u003col\u003e\n\u003cli\u003end generation (F3) | model year 2018–2025\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWA | 400 hp (294 kW)\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/li\u003e\n\u003cli\u003e8U | model year 2011–2018\u003cbr\u003e2.5 TFSI (EA855)\u003cbr\u003eCTSA | 310 hp (228 kW)\u003c\/li\u003e\n\u003cli\u003e8U | model year 2011–2018\u003cbr\u003e2.5 TFSI (EA855)\u003cbr\u003eCZGA | 340 hp (250 kW)\u003c\/li\u003e\n\u003cli\u003e8U | model year 2011–2018\u003cbr\u003e2.5 TFSI (EA855)\u003cbr\u003eCZGB | 367 hp (270 kW)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAudi TT \/ TTS \/ TT RS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8J | model year 2006–2014\u003cbr\u003e2.5 TFSI (EA855)\u003cbr\u003eCEPA | 340 hp (250 kW)\u003c\/li\u003e\n\u003cli\u003e8J | model year 2006–2014\u003cbr\u003e2.5 TFSI (EA855)\u003cbr\u003eCEPB | 360 hp (265 kW)\u003c\/li\u003e\n\u003cli\u003eFV \/ 8S | model year 2014–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eCZGB | 367 hp (270 kW)\u003c\/li\u003e\n\u003cli\u003eFV \/ 8S | model year 2014–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDAZA | 400 hp (294 kW)\u003c\/li\u003e\n\u003cli\u003eFV \/ 8S | model year 2014–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWA | 400 hp (294 kW)\u003c\/li\u003e\n\u003cli\u003eFV \/ 8S | model year 2014–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWB | 390 hp (287 kW)\u003c\/li\u003e\n\u003cli\u003eFV \/ 8S | model year 2014–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWC | 400 hp (294 kW)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCupra Formentor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eI (VZ) | model year 2020–\u0026gt;\u003cbr\u003e2.5 TFSI (EA855 evo)\u003cbr\u003eDNWB | 390 hp (287 kW)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bar-Tek","offers":[{"title":"Default Title","offer_id":52833467892059,"sku":"21rs337","price":708.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/ventilfeder-366a8a.png?v=1776452685"},{"product_id":"kelford-kvs273-bt-beehive-springs-audi-rs3","title":"Kelford KVS273-BT Beehive Springs - Audi RS3","description":"\u003cp\u003ePremium spring steel manufactured by PAC in the USA. Produced using advanced heat treatment and surface treatment methods (nanopeening), which extend the spring's fatigue resistance.\u003c\/p\u003e\n\u003cp\u003eAudi RS3 valve springs have a high natural frequency, which improves spring control at high RPMs (reducing \"spring surge\"). Additionally, they provide approximately 30% higher seat pressure compared to OEM springs.\u003c\/p\u003e\n\u003cp\u003eThe RS3 beehive valve spring kit is specifically designed for high boost and high RPM applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSeat pressure: 104 lbs @ 36.0 mm installed height\u003c\/li\u003e\n\u003cli\u003e214 lbs @ 11.5 mm valve lift\u003c\/li\u003e\n\u003cli\u003eCoil bind: 23.6 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstall supplied spring seat on intake only.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Kelford","offers":[{"title":"Default Title","offer_id":52833821360475,"sku":"KVS273-BT","price":847.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/Audi-RS3-Daza-Valve-Springs_1200x1200_db9bef54-75cd-4f7c-b8f5-26732e5997c4.png?v=1776455218"},{"product_id":"kelford-kvs275-bt-beehive-springs-and-ti-retainers-audi-r8-lamborghini-huracan-5-2l-v10","title":"Kelford KVS275-BT Beehive Springs and Ti Retainers - AUDI R8 \/ LAMBORGHINI Huracan 5.2L V10","description":"\u003ch3\u003eKELFORD KVS275-BT Beehive Springs and Ti Retainers for AUDI R8 \/ LAMBORGHINI Huracan 5.2L V10\u003c\/h3\u003e\n\u003cp\u003eThe KELFORD KVS275-BT beehive spring and titanium retainer kit is developed for the Audi 5.2L V10 engine, providing increased valvetrain stability for high boost and high rpm applications. The kit delivers 30% higher seat pressure than the OEM spring, supporting improved control under demanding operating conditions.\u003c\/p\u003e\n\u003cp\u003eThe valve springs are manufactured from premium spring steel wound in the USA by PAC. Advanced heat treatment and nano peening surface finishing are used to extend fatigue life. The high spring frequency design improves spring surge control at high engine speeds, applying valvetrain technology derived from Kelford’s Audi DAZA program.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBeehive spring and titanium retainer kit for the Audi 5.2L V10 engine\u003c\/li\u003e\n\u003cli\u003e30% higher seat pressure than the OEM spring\u003c\/li\u003e\n\u003cli\u003eDesigned for high boost and high rpm applications\u003c\/li\u003e\n\u003cli\u003ePremium spring steel wound in the USA by PAC\u003c\/li\u003e\n\u003cli\u003eAdvanced heat treatment and nano peening surface finishing for extended fatigue life\u003c\/li\u003e\n\u003cli\u003eHigh spring frequency improves spring surge control at high rpm\u003c\/li\u003e\n\u003cli\u003eBased on spring and valvetrain technology used in Kelford’s Audi DAZA program\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSeat Pressure: 104 lbs at 36.0 mm installed height\u003c\/li\u003e\n\u003cli\u003eSpring Pressure: 200 lbs at 11.0 mm valve lift\u003c\/li\u003e\n\u003cli\u003eCoil Bind: 23.6 mm\u003c\/li\u003e\n\u003cli\u003eInstallation: Install supplied spring seat on intake and exhaust\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kelford","offers":[{"title":"Default Title","offer_id":53594838925659,"sku":"KVS275-BT","price":1581.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/kelford-kvs275-bt_0172b191-6b28-4fc5-8034-8be0d248b9e7.webp?v=1784029970"},{"product_id":"kelford-ea888-3-beehive-springs","title":"KELFORD EA888.3 BEEHIVE SPRINGS","description":"\u003ch3\u003eKELFORD EA888.3 BEEHIVE SPRINGS\u003c\/h3\u003e\n\u003cp\u003eKelford Cams racing valve spring kit for the VW Audi EA888.3 MQB Platform. Models include: Audi TT, Audi A3, Volkswagen Golf.\u003c\/p\u003e\n\u003cp\u003ePremium quality spring steel wound in USA by PAC. Made with advanced heat treatment processing and surface finishing techniques (nano peening) to extend fatigue life.\u003cbr\u003eValve springs designed with a high spring frequency for superior spring surge control at high RPM and boast a +30% higher seat pressure than the OEM spring.\u003c\/p\u003e\n\u003cp\u003eThis beehive valve spring kit is specifically designed for high boost and high RPM applications.\u003c\/p\u003e\n\u003cp\u003eIN: 36.2mm installed height. 100lbs on seat. 210lbs at 11.5mm open. 12mm max lift.\u003cbr\u003eEX: 35.1mm installed height. 110lbs on seat. 220lbs at 11mm open. 11mm max lift.\u003c\/p\u003e\n\u003cp\u003eInstall supplied spring seat on both intake and exhaust.\u003c\/p\u003e","brand":"Kelford","offers":[{"title":"Default Title","offer_id":53973669151067,"sku":"KVS276-BT","price":676.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/KVS276-BT-SPRING-KIT-WEB-10.jpg?v=1788548223"},{"product_id":"bar-tek®-sport-valve-springs-set-4-0-tfsi-ea824-ea825","title":"BAR-TEK® Sport Valve Springs Set - 4.0 TFSI EA824 \u0026 EA825","description":"\u003ch3\u003eBAR-TEK® Sport Valve Spring Set - 4.0 TFSI EA824 \u0026amp; EA825\u003c\/h3\u003e\n\u003cp\u003eThe BAR-TEK sport valve spring set is made from high-quality hardened spring steel and features titanium valve spring retainers. The set is suitable for all 4.0L TFSI engines, used in models such as the Audi S6, RS6, S7, RS7, and S8.\u003c\/p\u003e\n\u003cp\u003eThe valve springs have a spring rate specifically optimized for performance use, which improves the response and operation of the 4.0L TFSI valvetrain. The titanium retainers reduce the moving mass of the valvetrain, making higher boost pressure and higher engine speeds possible.\u003c\/p\u003e\n\u003cp\u003eThe excellent stability of the springs at high RPMs makes them a suitable solution for heavily tuned 4.0L TFSI engines.\u003c\/p\u003e\n\u003cp\u003eSport valve springs are necessary when increasing engine boost pressure or installing performance camshafts. Original valve springs may not be able to control the valvetrain effectively enough under such operating conditions. This can result in incomplete valve closing or, in the worst case, valve spring failure.\u003c\/p\u003e\n\u003cp\u003eBoth situations can lead to serious and expensive engine damage.\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBetter and faster valvetrain response\u003c\/li\u003e\n\u003cli\u003eAllows for higher engine speeds\u003c\/li\u003e\n\u003cli\u003eReduced-mass valvetrain thanks to titanium spring retainers\u003c\/li\u003e\n\u003cli\u003eExcellent stability at high RPMs\u003c\/li\u003e\n\u003cli\u003eAllows for higher boost pressure\u003c\/li\u003e\n\u003cli\u003eUp to +70 hp and +70 Nm with Stage 1 software\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eKit includes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e32x high-quality hardened spring steel valve springs\u003c\/li\u003e\n\u003cli\u003e32x high-quality titanium valve spring retainers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe valve spring set is especially suitable for 4.0L TFSI engines using modified camshafts and\/or larger performance turbochargers with higher boost pressure.\u003c\/p\u003e\n\u003ch4\u003eDesigned for higher power\u003c\/h4\u003e\n\u003cp\u003eSport valve springs are designed for demanding performance use. The springs are manufactured from specially processed heat-treated spring steel with excellent strength and toughness. The springs feature a special coating and a larger material thickness than standard models, which improves their durability in demanding operating conditions.\u003c\/p\u003e\n\u003cp\u003eThe performance of the springs is based not only on the material used but also on a precisely optimized design. The oval construction allows for greater valve lift and improves valvetrain stability at high RPMs.\u003c\/p\u003e\n\u003cp\u003eThe conical design, where the spring narrows toward the top, reduces moving mass and helps improve the overall operation of the valvetrain.\u003c\/p\u003e\n\u003ch4\u003eOptimized design prevents valvetrain problems\u003c\/h4\u003e\n\u003cp\u003eAs power increases and boost pressure rises, sufficient stiffness and correct sizing of the valve springs are critical. Valve springs or retainers that are too weak can cause a situation in a turbocharged engine where the valves do not remain properly closed. This, in turn, can cause issues with boost pressure formation and control.\u003c\/p\u003e\n\u003cp\u003eThe optimized oval design of the sport valve springs helps prevent spring coil bind. At the same time, the correct preload of the spring is maintained throughout the operating range.\u003c\/p\u003e\n\u003cp\u003eAs a result, the valvetrain operates more stably at high RPMs, engine rev-sensitivity improves, and the risk of problems related to boost pressure control is reduced.\u003c\/p\u003e\n\u003ch4\u003eTechnical specifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eL0:\u003c\/strong\u003e 47.00 ± 0.30 mm\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eF1:\u003c\/strong\u003e 307.00 N @ 40.00 mm\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eF2:\u003c\/strong\u003e 748.00 N @ 30.00 mm\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSpring rate:\u003c\/strong\u003e 44.1 N\/mm\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLoad:\u003c\/strong\u003e 441 N \/ 10 mm compression\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLc:\u003c\/strong\u003e 23.00 mm (max.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e \u003cstrong\u003eIllustrative photo. The image shows a valve spring set for a 4-cylinder engine.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Bar-Tek","offers":[{"title":"Default Title","offer_id":54245700927835,"sku":"21rs602.1","price":1008.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/ventilfeder-366a8a_030515c3-b8a2-4aec-bf5c-65bb04524cab.png?v=1791116657"},{"product_id":"brian-crower-bc0700-single-spring-titanium-retainer-kit-audi-vw-1-8t-20v","title":"Brian Crower BC0700 Single Spring \u0026 Titanium Retainer Kit - Audi \/ VW 1.8T 20V","description":"\u003ch1\u003eBrian Crower Single Spring \u0026amp; Titanium Retainer Kit – Audi \/ VW 1.8T 20V\u003c\/h1\u003e\n\u003cp\u003eTitanium retainers reduce valvetrain mass.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage contents:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eValve springs\u003c\/li\u003e\n\u003cli\u003eRetainers (titanium)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAudi \/ VW 1.8T 20V\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Brian Crower","offers":[{"title":"Default Title","offer_id":55180928254299,"sku":"BC0700","price":438.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/files\/pojedyncze-sprezynki-i-talerzyki-zaworowe-tytanowe-bc-brian-crower-bc0700-audi-1-8t-20v.jpg?v=1794601427"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/9937\/5126\/collections\/AL090142_web_2880_e711ba5b-d056-4190-a014-306e6f461edc.png?v=1794600864","url":"https:\/\/www.qtparts.fi\/en\/collections\/audi-venttiilijouset.oembed","provider":"QT Parts","version":"1.0","type":"link"}