Good parts good quality I appreciate the quality and quickness of arrival of their parts their welds and craftsman ship. However ups usually does horrible shipment and sometimes leaves knicks and scratches which can be annoying but that’s ups’s fault. All I ask of sinister is more sales products as I feel as some of their items overpriced yet I want to buy 80% of my parts from them I only buy some here and there because they are so expensive compared to oem

Great company to work with Ordered a couple Charge pipes due to Ford being on national back order and Sinister Diesel was able to help out with having theirs available. Great quality products, friendly service and quick responses.

Ordered a Sinister Hot Side Inter… Ordered a Sinister Hot Side Inter cooler tube, boots, and clamps, got great updates on where my order was at and got it delivered fairly quick which I was worried out with the Corona ordeal. Thanks, everything looks great quality!

Quality Parts, Fast & Free Shipping We have ordered from Sinister Diesel before and I know it is a website we can trust to order from, and the parts arrive in just a couple of days. If we have any questions, it is easy to reach a person in customer service and they are knowledgeable about the products we are purchasing and are able to answer any questions we have. Maybe there are cheaper parts available on the web, but you get what you pay for and these parts are quality! Thank you!

EGR DELETE 6.7 POWERSTROKE Bought the EGR delete for my F350. Super reasonably priced with very quick shipping. Very high quality and everything in the kit fit perfectly. Will definitely be buying more goodies from Sinister.