GM Duramax Stage 4 Extreme System - Custom built system, please contact us with year, mods, towing weight, zip code for details on if we can build a system for you. Do not just purchase this, as they are custom built per vehicle needs and some years may throw engine code. Contact us for details.
Stage 4 Extreme system. It will come with 2 hand made, hand tig welded aluminum shrouds, 1 for each of our Ext cooling fans, each fan will be on its own shroud, this way neither one takes any power away from the other for maximum efficiency. Aluminized coated blades for extreme high under the hood temperatures to deflect heat and hold shape. The system will also include our fully adjustable extreme fan control system. This system will include wiring, relays, fuses, mounting kit, tuning tool, for your install. All of our fans carry a lifetime, no questions asked warranty.
Custom hand built system. Email for details, can take up to 5 days for shipment.