Ulter Sport manufactures performance exhaust products using stainless steel for the premium range. Whilst Ulter Sport use high grade ASi 304 stainless steel for their premium range other manufacturers use the more common T409 stainless steel. Why does this matter? The mixture of T409 can contain typically 10% chromium compared to the 304 grade containing up to 20% chromium. Although more expensive the T304 offers a higher resistance to corrosion in the UK weather and salted winter roads. The lifespan of a 304 grade can be 10+ years depending on usage. The more often the car is used the longer the exhaust components will last as water vapour has less change to form condensation which rots the exhaust form the inside. Ulter Sports exhausts in most cases benefit from being produced with a polished stainless steel tailpipe. This adds good looks to the performance gains and sporting exhaust tone produced when fitting an Ulter exhaust.