ArndtCraft Project 4X Extreme Cool fan shroud
Coming from ArndtCraft is a purpose-designed Extreme Cool fan shroud for the Serpent Project 4X and 4X Evo touring cars. Using a 30x10mm fan the shroud is of a slotted adjustable design for gearing changes and it ensures a cooler running motor. The motor to cooling fan spacing is approx 11.5mm, to avoid magnetic interference and the mount weighs in at just above 3 gram.
Source: ArndtCraft [arndtcraft.com]