{"title":"Valves \u0026 Springs","description":"\u003cp align=\"justify\"\u003eValves and springs are fundamental to your engine's ability to manage airflow and combustion efficiently. High-quality valves ensure precise control of the intake and exhaust processes, while durable springs maintain optimal valve operation at high RPMs. At ATOMIC-SHOP, we provide a comprehensive range of performance valves and springs designed to withstand the demands of both street and race engines, allowing you to push your vehicle's performance to the next level.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eUpgrading your engine with advanced valves and springs can lead to significant improvements in power, responsiveness, and longevity. Enhanced airflow through precisely engineered valves means better combustion, resulting in more horsepower and torque. Paired with robust springs that resist valve float at high speeds, your engine will perform more reliably and efficiently, even under extreme conditions.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eSelecting the right valves and springs for your engine is crucial for achieving optimal performance. That’s why ATOMIC-SHOP offers a variety of materials and designs tailored to specific engine configurations and performance goals. Whether you're aiming for peak performance in a high-revving race engine or seeking durability for a daily driver, our expert team can help you find the perfect match for your needs.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eAt ATOMIC-SHOP, we prioritize quality and precision in every product we offer. Our selection of valves and springs is sourced from leading manufacturers who are known for their commitment to excellence. This ensures that every component you choose is built to deliver consistent, high-level performance for years to come.\u003c\/p\u003e\n\n\u003cp align=\"justify\"\u003eExplore our extensive range of valves and springs today and see how upgrading these critical components can enhance your engine's performance. With ATOMIC-SHOP, you're not just fine-tuning your vehicle — you're investing in the precision and reliability that will keep your engine performing at its best.\u003c\/p\u003e\n","products":[{"product_id":"hks-22001-am001-valve-spring-kit-evo-17-see-note-old-2201-rm001","title":"HKS 22001-AM001 Valve Spring Kit EVO 1~7 (see note!) (Old # 2201-RM001)","description":"\u003cp\u003eValve Spring for High RPM Engines\u003c\/p\u003e \u003cp\u003eValve spring performance is very important for valves to follow accurate cam profile.\u003c\/p\u003e \u003cp\u003e1. Compatible with High RPM Engines\u003c\/p\u003e \u003cp\u003eAs engine rpm rises, valves must open and close in a shorter time and so requires stronger Valve Springs in order to apply sufficient pressure.\u003c\/p\u003e \u003cp\u003e2. Ensuring Close-Contact\u003c\/p\u003e \u003cp\u003eWhen changing to high lift cams, proper contact between the valves and the cams can be lost which leads to valve float. 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Coil bind at 22.0mm.\u003c\/p\u003e ","brand":"KELFORD","offers":[{"title":"Default Title","offer_id":43652297064628,"sku":"KVS04","price":555.17,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/kelford-kvs15_aa835808-79a1-476a-87c9-2fadefa603ce.jpg?v=1774964299"},{"product_id":"kelford-kvs56-bt-nissan-vk56de-t-ovate-wire-pacaloy-beehive-valve-spring-set","title":"KELFORD KVS56-BT NISSAN VK56DE-(T). Ovate wire, PACALOY Beehive valve spring set","description":"","brand":"KELFORD","offers":[{"title":"Default Title","offer_id":43652296802484,"sku":"KVS56-BT","price":1647.46,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/kelford-kvs56-bt_3837fbf4-389c-418c-b251-a7de70163695.jpg?v=1774964297"},{"product_id":"kelford-kvs11-bt-valve-spring-set-mitsubishi-4b11-t-evo-x","title":"KELFORD KVS11-BT Valve Spring Set MITSUBISHI 4B11-T EVO X","description":"\u003ch2 style=\"box-sizing: border-box; font-family: Exo, sans-serif; line-height: 1.1; color: rgb(85, 85, 85); margin-top: 20px; margin-bottom: 10px; font-size: 22px; font-style: italic; text-shadow: none;\"\u003eDescription\u003c\/h2\u003e\u003ch2 style=\"box-sizing: border-box; font-family: Exo, sans-serif; line-height: 1.1; color: rgb(85, 85, 85); margin-top: 20px; margin-bottom: 10px; font-size: 22px; font-style: italic; text-shadow: none;\"\u003eMITSUBISHI 4B11-T EVO X. PACALOY Beehive valve spring set with titanium retainers. This spring set has been designed for the serious racer for high rpm, high boost racing applications.\u003c\/h2\u003e\u003cdiv class=\"std\" open=\"\" style=\"box-sizing: border-box; font-size: 16px; margin-top: 15px; margin-bottom: 15px; line-height: 26px; color: rgb(99, 99, 99); font-family: \"\u003e\n\u003ch2 style=\"box-sizing: border-box; font-family: Exo, sans-serif; line-height: 1.1; font-style: italic; text-shadow: none; color: rgb(85, 85, 85) !important; margin: 0px 0px 15px !important; font-size: 20px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: none !important; padding: 0px !important;\"\u003eAdditional Information\u003c\/h2\u003e\n\u003ch2 style=\"box-sizing: border-box; font-family: Exo, sans-serif; line-height: 1.1; font-style: italic; text-shadow: none; color: rgb(85, 85, 85) !important; margin: 0px 0px 15px !important; font-size: 20px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: none !important; padding: 0px !important;\"\u003e85lb seat pressure @ 34.2MM. 185lb at 11.5mm lift. Coil bind 21MM. Suits 10,000rpm and 50lb+ boost.\u003c\/h2\u003e\n\u003c\/div\u003e\u003cp\u003e \u003c\/p\u003e","brand":"KELFORD","offers":[{"title":"Default Title","offer_id":43652304109748,"sku":"KVS11-BT","price":694.86,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/kelford-kvs11-bt.jpg?v=1774964324"},{"product_id":"manley-11136-8-intake-valve-set-mitsubishi-4g63-4g63t-35-mm","title":"MANLEY 11136-8 Intake valve set MITSUBISHI 4G63\/4G63T 35 mm","description":"","brand":"MANLEY","offers":[{"title":"Default Title","offer_id":43225241878708,"sku":"11136-8","price":304.46,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/2271_jP16_manley2.jpg?v=1778211824"},{"product_id":"manley-11134-8-intake-valve-kit-race-series-for-mitsubishi-4g63-4g63t-engine","title":"MANLEY 11134-8 Intake Valve Kit Race Series for MITSUBISHI 4G63 \/ 4G63T Engine","description":"\u003ch2\u003eMANLEY 11134-8 Race Series Intake Valve Kit for Mitsubishi 4G63 \/ 4G63T Engine\u003c\/h2\u003e \u003cp\u003eThe MANLEY 11134-8 Intake Valve Kit is part of the Race Series line, purpose-built for high-performance Mitsubishi 4G63 and 4G63T engines. Developed to meet the demands of drag, bracket, and oval track racing under 8000 RPM, these valves are crafted from NK-842 stainless steel for excellent thermal stability, wear resistance, and intake airflow performance. Featuring a swirl-polished underhead and fully machined combustion face, they deliver optimal efficiency for sport compact and alcohol-fueled engines operating in extreme conditions.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eNK-842 stainless steel intake valves for superior strength and durability\u003c\/li\u003e \u003cli\u003eChrome-plated stems and hard tips for enhanced wear resistance\u003c\/li\u003e \u003cli\u003eSwirl-polished underhead and fully machined combustion surface\u003c\/li\u003e \u003cli\u003eAvailable in Race Master (straight stem) and Race Flo configurations\u003c\/li\u003e \u003cli\u003eDesigned for high-performance engines, including alcohol-fueled applications\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eSpecifications:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eProduct Market: Sport Compact\u003c\/li\u003e \u003cli\u003eHead Diameter: 34.00 mm\u003c\/li\u003e \u003cli\u003eStem Diameter: 0.2587 in \/ 6.57 mm\u003c\/li\u003e \u003cli\u003eOverall Length: 109.70 mm\u003c\/li\u003e \u003cli\u003eTip Length: 3.80 mm\u003c\/li\u003e \u003cli\u003eMargin Width: 0.050 in\u003c\/li\u003e \u003cli\u003eSeat Width: 0.075 in\u003c\/li\u003e \u003cli\u003eTop of Head: 15° Dish\u003c\/li\u003e \u003cli\u003eUnderhead Angle (Pro Flo): 20.00°\u003c\/li\u003e \u003cli\u003eUnderhead Radius: 11\/32 in\u003c\/li\u003e \u003cli\u003eValve Series: Race Series\u003c\/li\u003e \u003cli\u003eValve Type: Intake\u003c\/li\u003e \u003cli\u003eProduct Type: Engine Intake Valve Kit\u003c\/li\u003e \u003cli\u003eValve Quantity: 8\u003c\/li\u003e \u003cli\u003eEngine Detail: DOHC 16 Valve (Mitsubishi 4G63 \/ 4G63T)\u003c\/li\u003e \u003c\/ul\u003e ","brand":"MANLEY","offers":[{"title":"Default Title","offer_id":43498378625204,"sku":"11134-8","price":304.46,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/manley-valve-kit_3.jpg?v=1778211822"},{"product_id":"manley-11135-8-exhaust-valve-set-mitsubishi-4g63-4g63t-31-5-mm","title":"MANLEY 11135-8 Exhaust valve set MITSUBISHI 4G63\/4G63T 31.5 mm","description":"","brand":"MANLEY","offers":[{"title":"Default Title","offer_id":43225242140852,"sku":"11135-8","price":304.46,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/2270_fB3o_manley.jpg?v=1778211824"},{"product_id":"manley-11133-8-exhaust-valve-kit-race-series-for-mitsubishi-4g63-4g63t-engine","title":"MANLEY 11133-8 Exhaust Valve Kit Race Series for MITSUBISHI 4G63 \/ 4G63T Engine","description":"\u003ch2\u003eMANLEY 11133-8 Race Series Exhaust Valve Kit for Mitsubishi 4G63 \/ 4G63T Engine\u003c\/h2\u003e \u003cp\u003eThe MANLEY 11133-8 Exhaust Valve Kit is a Race Series solution tailored for high-performance Mitsubishi 4G63 and 4G63T engines. Specifically designed for motorsport applications including drag, bracket, and circuit racing environments operating below 8000 RPM, these valves are constructed from premium XH-426 stainless steel for exceptional strength and durability. Engineered with advanced design features such as swirl polishing and full machining, they deliver reliable, high-flow performance—particularly in alcohol-fueled engines subject to extreme thermal and mechanical stress.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eHigh-strength XH-426 stainless steel construction for exhaust durability\u003c\/li\u003e \u003cli\u003eChrome-plated stems and hardened tips for enhanced wear resistance\u003c\/li\u003e \u003cli\u003eSwirl-polished underhead and fully machined combustion face for improved flow\u003c\/li\u003e \u003cli\u003eAvailable in Race Master (straight stem) and Race Flo profiles\u003c\/li\u003e \u003cli\u003eOptimized for use in alcohol-fueled high-performance engines\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eSpecifications:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eProduct Market: Sport Compact\u003c\/li\u003e \u003cli\u003eHead Diameter: 30.50 mm\u003c\/li\u003e \u003cli\u003eStem Diameter: 0.2575 in \/ 6.54 mm\u003c\/li\u003e \u003cli\u003eOverall Length: 109.70 mm\u003c\/li\u003e \u003cli\u003eTip Length: 3.80 mm\u003c\/li\u003e \u003cli\u003eMargin Width: 0.065 in\u003c\/li\u003e \u003cli\u003eSeat Width: 0.080 in\u003c\/li\u003e \u003cli\u003eTop of Head: 17° Dish\u003c\/li\u003e \u003cli\u003eUnderhead Angle (Pro Flo): 22.00°\u003c\/li\u003e \u003cli\u003eUnderhead Radius: 7\/16 in\u003c\/li\u003e \u003cli\u003eValve Series: Race Series\u003c\/li\u003e \u003cli\u003eValve Type: Exhaust\u003c\/li\u003e \u003cli\u003eProduct Type: Engine Exhaust Valve Kit\u003c\/li\u003e \u003cli\u003eValve Quantity: 8\u003c\/li\u003e \u003cli\u003eEngine Detail: DOHC 16 Valve (Mitsubishi 4G63 \/ 4G63T)\u003c\/li\u003e \u003c\/ul\u003e ","brand":"MANLEY","offers":[{"title":"Default Title","offer_id":43225241911476,"sku":"11133-8","price":304.46,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/manley-valve-kit_2.jpg?v=1778211823"},{"product_id":"manley-11112-8-intake-valve-kit-race-series-for-nissan-sr20de-engine","title":"MANLEY 11112-8 Intake Valve Kit Race Series for Nissan SR20DE Engine","description":"\u003ch2\u003eMANLEY 11112-8 Race Series Intake Valve Kit for Nissan SR20DE Engine\u003c\/h2\u003e \u003cp\u003eThe MANLEY 11112-8 Intake Valve Kit is part of the high-performance Race Series lineup, specifically engineered for the Nissan SR20DE engine. Designed to meet the extreme demands of drag, bracket, and oval track racing environments under 8000 RPM, these intake valves are manufactured from NK-842 stainless steel to ensure superior strength and temperature resistance. 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