BLOX Racing offers a full line of DIY performance parts. The Performance DIY line is perfect for building and assembling your own high performance component and products. 2-hole exhaust gaskets for sealing exhaust piping that mates 2-hole flanges together. Ideal for any OEM or aftermarket exhaust system. Available sizes: 2.0", 2.25", 2.5", 2.75", 3.0", 4.0"