What does “DTM” stand for?? DOWN THE MIDDLE! Just as our logo above illustrates…. It’s the only cooling system available for the VW Type one and VW/ Porsche Type 4 aircooled engines that effectively and efficiently routes cooling air to the cylinders that need it most!! This is something that no other cooling system available presently incorporates! This “Down The Middle” design is currently “patent pending”

A cooler running engine will produce more horsepower, something our dyno has proven time and time again. Cooler cylinders and heads keep the engines efficiency higher and increase engine life and even increase fuel economy! Fuel economy is a benefit of higher efficiency! So is HORSEPOWER!

New to Raby's Aircooled Technology and the MassIVe Type 4? To learn more about the engines and other services offered by Aircooled Technology, use the navigation menu to the left. For parts, visit the Type 4 Store by clicking on the link below. DTMS are available in the Type 4 Store exclusively!
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Massive DTM logo

MassIVe “DTM” Conversion Video available at The Type 4 Store!!
The only Type Four conversion cooling system that comes with its own step by step installation video!
Once again Aircooled Technology breaks the “Information barrier” and Teams up with Bug me Video for an in depth look at the VW Type IV engine conversion! With this video the “DTM” is easier to install than ever before!