NM Eng. Titanium Turbo Heat Shield • R-ChassisNM Engineering has always used the finest materials in its manufacturing, including products constructed from T 304 stainless, 6061 T6, and 7075 T6 aluminum. With that in mind, NM has taken the next step with its new TitaNM product line which features parts utilizing titanium. NMs new TitaNM turbo heat shield is designed to redirect heat from the turbocharger down and around the engine. This reduces intake temps and protects the paint on the bonnet.