The video below explains the concept behind our Narrow Differentials and the benefits including longer axles and more wheel travel. Using...

We have created a technical video explaining some of the benefits of using our reverse direction quick change transfer case in a Mid or...

Do you need an electric oil pump? Engine Oil? Gearbox Oil Cooler? Diff Cooler? What flow rate do you need? 0.25GPM? 2 GPM? 3 GPM? Before...

ULTRA4 Expands into Europe Wales Scotland Portugal Italy Will IFS Vehicles Dominate the European Series? The ULTRA 4 series (USA) has...

How Much More Wheel Travel Can I achieve? Calculate Additional Wheel Travel Based on Axle Length Proformance Ultra Narrow IFS and IRS...

Can Thread Lockers SNAP your bolts in Half? During the 6 Month final assembly of our brand new $300,000 Off Road Race Truck, I noticed a...

What are your Spark Plug Lead Conductors made of? Engine Misfires? After many months of annoying black spark plugs, Proformance...

Do you have to heat your Diff Oil in microwave before you can pour it into your diff casing? Do you have to jack your truck up and run...

Do you ever drive your ULTRA 4 Rock Racer In Reverse? Are your Diffs Mounted Upside Down? What happens to your diffs in reverse? Are they...