Skunk2 Racing Pro Series XP Valve Spring Set (311-05-7350)
SKU: 4269111782

Skunk2 Racing Pro Series XP Valve Spring Set (311-05-7350)

Sale price$173.71 Regular price$193.01
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Skunk2 Racing Pro Series XP Valve Spring Set (311-05-7350)Seat Pressure: 93 lbs at 1. 320in. Open Pressure: 238 lbs at . 820in. Coil Bind: . 718in. Must Use Skunk2 P N: 312 05 0015 (Spring Bases) to Install in H22A F20B Engines. 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.

Seat Pressure: 93 lbs at 1.320in.-Open Pressure: 238 lbs at .820in.-Coil Bind: .718in. Must Use Skunk2 P/N: 312-05-0015 (Spring Bases) to Install in H22A/F20B Engines. 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" 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.

Features

  • Designed for proper valves operation
  • Springs prevent valve float maintain valvetrain
  • Retainers significantly reduce valvetrain mass to increase valvetrain stability and horsepower
  • Springs are made of chrome-silicone wire
  • Springs maintain valvetrain stability engine at speeds more than 10,000 rpm
  • Backed by a one-year warranty
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 4269111782

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David C. Gilliam
Omaha, US
★★★★★ 2
Can’t read numbers
Color: Gray/Gray/Digital
Numbers are too small to tread on a 44mm watch
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Reviewed in the United States on May 5, 2026
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Diana Steffenny Ruiz Pinzon
Houston, US
★★★★★ 5
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Reviewed in the United States on March 25, 2026
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Lori Cureton
Draper, US
★★★★★ 4
Cute but very inexpensive
Keep in mind you get what you pay for. That said, this is a very cute watch and my granddaughter loves it. It was a Christmas gift and when she first opened it and set it, it would not run. Later, when I was working on requesting an exchange, I noticed it was running. Hopefully it will continue to run and she will be happy with this watch. It's a unique style and perfect for a teenage girl.
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Reviewed in the United States on December 31, 2025
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kat
Port Orchard, US
★★★★★ 5
perfect fit!!
This watch is reliable & breaks in nicely for a comfortable fit
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Reviewed in the United States on February 21, 2024
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Suzanne Raif
Cuba, US
★★★★★ 1
Pretty but leather is mildewed.
I read the reviews but took a chance that the one I received would not smell mildewed. Oh my!! It stinks to high heaven!!! And it is too small for my wrist…another chance I took. Instead of returning it, I’m going to try and replicate it using the watch and dangles with ribbon and cords. It was wrapped very tightly in bubble wrap. Perhaps the leather would not have mildewed if it had been able to breathe. Boy! Does it stink!!!!!
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Reviewed in the United States on September 29, 2025

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