Bilstein Shock Oil

194131 Is the part number for standard oil, the price is higher to account for the large freight cost for shipping these. In order to provide you with the best product at the best price i suggest checking this site first: https://www.summitracing.com/parts/bsn-194131 and ordering from summit if it is in stock. If you have any questions about oil quantity, rebuilds, tuning, swapping to different pistons, please shoot me an e-mail at wheeleveryweekend@gmail.com and i will be happy to help you out.