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5" Flange & Donut Header Install Kit
Configurable 3 or 4 digit precision display mode
producing broad powerbands that carry to the top of the RPM range
Waist load spreader pad
Internal MAP sensor handles boost pressure up to 50psi (3
Skunk2 Pro XP Valve Springs - K Series Velocity Stacks 5" Flange & Donut HeaderSkunk2 Pro XP Valve Springs K Series Skunk2 is proud to introduce its Pro Series XP (Extra Pressure) Racing Valve Spring Kits for the Honda K series i VTEC engines. Each kit includes Skunk2s 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 100lbs @ 1. 600