{"product_id":"skunk2-racing-pro-series-honda-acura-b-series-vtec-xp-valve-spring-set-part-number-311-05-7350","title":"Skunk2 Racing Pro Series Honda\/Acura B-Series VTEC XP Valve Spring Set (Part Number 311-05-7350)","description":"Skunk2 is proud to introduce its Pro Series XP (Extra Pressure) Racing Valve Spring Kits for the Honda B-series VTEC engines. Each kit includes Skunk2's high-quality race-proven dual valve springs that are the result of nearly two decades of racing and engine building experience. 'XP' features a higher seat pressure for turbocharged and extreme high RPM motors. This spring has a seat pressure of 93lbs @ 1.320 in. while keeping the coil bind height for higher lift camshafts. Each Pro Series XP Racing Valve Spring is manufactured exclusively from super-clean, chrome-silicone wire milled in Japan. By using inner and outer springs mated together through a slight interference fit and with differing frequencies, Pro Series XP Racing Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 11,000 rpm. Wound by a premier North American winder, our Pro Series XP Racing Valve Springs retains its durability and strength that results in improvement to the extreme fatigue limit of the wire and enhanced resistance to load loss. Pro Series XP Racing Valve Springs are engineered to handle the demands of extreme-lift camshafts operating at prolonged, high-rpm use at championship-level racing. Skunk2's Pro Series XP Racing Valve Spring's for the Honda's B-series VTEC engines are simply the best on the market. Pro Series XP Racing Valve Springs have been tested at speeds exceeding 11,000 rpm on our engine dyno, street, and the race track. Our superior, Japanese-milled, super-clean chrome silicone wire is 100-percent eddy-current inspected prior to coiling. Next, they are heat-treated, shot-peened, and chemically polished for strength and durability. A special nitriding process concludes Skunk2's rigorous manufacturing process. The end result is a lightweight valve spring that safely accommodates high-lift camshafts and features superior resistance to load loss, even under extreme operating conditions.\nPro Series XP Valve Spring Set; Seat Pressure 93 Lbs At 1.320 in.; Open Pressure 238 Lbs At 0.820 in.; Coil Bind 0.718 in.; Set of 16;\n\u003cul\u003e\n  \u003cli\u003ePrevents Valve Float\/Maintain Valvetrain Stability +10000rpm\u003c\/li\u003e\n  \u003cli\u003eManufactured From Super-Clean Chrome-Silicone Wire\u003c\/li\u003e\n  \u003cli\u003eOpen Pressure 238 lbs. At 0.820 in.\u003c\/li\u003e\n  \u003cli\u003eSeat Pressure 93 lbs. At 1.320 in.\u003c\/li\u003e\n  \u003cli\u003eCoil Bind 0.718 in.\u003c\/li\u003e\n  \u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Skunk2 Racing Pro Series Honda\/Acura B-Series VTEC XP Valve Spring Set is engineered for high-performance applications, providing exceptional valvetrain stability at extreme RPMs. Designed specifically for turbocharged and high-lift camshaft setups, these springs feature a seat pressure of 93 lbs at 1.320 inches and an open pressure of 238 lbs at 0.820 inches, ensuring reliable operation during intense racing conditions. Manufactured from super-clean chrome-silicone wire milled in Japan, each spring undergoes rigorous inspection and processing, including heat-treating, shot-peening, and chemically polishing, to maximize durability and fatigue resistance. The specialized nitriding process further enhances the springs' strength and load retention, making them suitable for engines operating beyond 11,000 rpm. These dual valve springs are carefully matched with inner and outer springs to prevent valve float and maintain stable valvetrain performance at high engine speeds. Wound by a premier North American manufacturer, the springs are lightweight yet robust, capable of handling extreme lift and prolonged high-RPM use without compromising reliability. The set includes 16 springs, perfectly suited for a variety of Honda and Acura models equipped with B-series VTEC engines, including the Civic del Sol, Civic, and Acura Integra from 1994 to 2001. Whether for street use or championship-level racing, the Skunk2 XP Valve Spring Set offers unmatched performance and durability, backed by extensive testing and quality control to ensure consistent, reliable operation under demanding conditions.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003ePrevents valve float and maintains valvetrain stability at speeds exceeding 10,000 rpm\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eManufactured from super-clean chrome-silicone wire milled in Japan\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOpen pressure: 238 lbs at 0.820 inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSeat pressure: 93 lbs at 1.320 inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCoil bind height: 0.718 inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSet of 16 springs designed for high-RPM and high-lift camshafts\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1992 Acura Integra GS-R\u003cbr\u003e\n1993 Acura Integra GS-R\u003cbr\u003e\n1994 Acura Integra GS-R\u003cbr\u003e\n1994 Honda Civic del Sol VTEC\u003cbr\u003e\n1995 Acura Integra GS-R\u003cbr\u003e\n1995 Honda Civic del Sol VTEC\u003cbr\u003e\n1996 Acura Integra GS-R\u003cbr\u003e\n1996 Honda Civic del Sol VTEC\u003cbr\u003e\n1997 Acura Integra GS-R\u003cbr\u003e\n1997 Acura Integra Type R\u003cbr\u003e\n1997 Honda Civic del Sol VTEC\u003cbr\u003e\n1998 Acura Integra GS-R\u003cbr\u003e\n1998 Acura Integra Type R\u003cbr\u003e\n1999 Acura Integra GS-R\u003cbr\u003e\n1999 Honda Civic Si\u003cbr\u003e\n2000 Acura Integra GS-R\u003cbr\u003e\n2000 Acura Integra Type R\u003cbr\u003e\n2000 Honda Civic Si\u003cbr\u003e\n2001 Acura Integra GS-R\u003cbr\u003e\n2001 Acura Integra Type R\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":53602053554449,"sku":"311-05-7350","price":386.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/3830\/0689\/files\/aa47af013ad5fd4f5059a6fdcbd45b7b.jpg?v=1779924013","url":"https:\/\/shoprenegade.com\/products\/skunk2-racing-pro-series-honda-acura-b-series-vtec-xp-valve-spring-set-part-number-311-05-7350","provider":"Renegade Speed by Renegade Racing \u0026 Performance","version":"1.0","type":"link"}