Forge Motorsport Dump Valve Spring (Single) FMDVSU110 S3 8L Mk1 The result is outstanding cooling

The result is outstanding cooling characteristics with minimal backpressure to keep your engine running at full speed

Honda Civic Type R FK2 (LHD) 2015-2017

Other manufacturers' valves use cylindrical springs with adjustable pre-load

With impressive mesh dimensions of 610 mm x 440 mm x 65 mm and an intercooler volume of 17

A = 1134 cm² (+24%)

Forge Motorsport Dump Valve Spring (Single) FMDVSU110 S3 8L Mk1 The result is outstanding coolingThese are the individual springs sold in our FMDVTUN kit. Please select the colour you require using the options above. Valve Spring color coding: Green 5 15 PSI, Yellow 15 23 PSI, Blue 23 30 PSI, Red 30 + PSI *The above figures are estimates and should only be considered as a guideline* Note: The quoted spring pressure (PSI) relates to the un assisted clamping force of the spring and should NOT be taken as an equivalent to boost pressure when