Abstract The gravitational S $$ \mathcal{S} $$ -matrix defined with an infrared (IR) cutoff factorizes into hard and soft factors. The soft factor is universal and contains all the IR and collinear divergences. Here we show. in a momentum space basis. https://www.roneverhart.com/E3-Spark-Plugs-6-2L-Hellcat-Demon-Trackhawk-2015-2022/