Rebecca’s customer service is dope!
my family and I have spent a ton of money with sinister for our 6.0/7.3 powerstrokes, from turbos, to exhausts, to internal engine parts. I contacted them the other day on possibly seeing warranty period for their oil/coolant filtration system kits, the bracket had a developed a crack in it over the past few years from vibration and harshness of a 6.0 engine bay. got in touch with Rebecca in their customer service via chat and via phone call. honestly she’s been the EASIEST customer service rep of a big performance parts company I’ve ever dealt with in my 12yrs of automotive performance/repair career. she went out of her way even at closing time (sorry for running you around Rebecca) to my old order history to see what all I’ve replaced on the truck that I couldn’t find the paperwork for. even offered me some swag and discount codes for being a loyal customer, and all this offered over a warranty parts call! I’ll be spending my next $1k toy truck budget with these guys again. haters will say it’s photoshopped, but I’ve had nothing but good customer service experience and purchase experience with sinister diesel. you get out what you put in when it comes to customer service and wanting help on warranty repairs/parts in this industry. treat people the way you want to be treated. Jamie a.