About Powerhouse Performance | Off-Road Performance Shop
Powerhouse Performance is Simi Valley's premier automotive performance shop, specializing in high-quality engine upgrades, suspension upgrades, and aftermarket parts for Cars, Trucks, and SUVs. Their experienced technicians are dedicated to delivering top-notch service and ensuring customer satisfaction with every visit. Customers have praised the shop's attention to detail, honest pricing, and exceptional work. They have installed a 3.5" Clayton Overland lift kit on a Jeep Willy's 4xe, dialing in the proper alignment and improving the vehicle's performance. Customers have also appreciated the shop's ability to help with shocks and suspension, with one customer stating that the technicians went "above and beyond" to ensure the work was done "absolutely perfectly and professionally." Customers have also highlighted the shop's expertise in working on unique and off-road vehicles, with one customer stating that if you want to "trick out your unique vehicle and make something that goes plenty fast even faster, look better, function better," Powerhouse Performance is the place to go. The shop has been described as the "best of the best" and a place where technicians take pride in their work. Overall, Powerhouse Performance is a highly recommended automotive performance shop that delivers exceptional service, quality workmanship, and customer satisfaction.
Powerhouse in Simi Valley, run by Thomas, is one of the top performance shops around. They are highly professional, extremely helpful, and truly know their work. Once you work with them, you won’t want to go anywhere else.✅✅✅🌟🌟🌟🌟🌟
March 2026
My husband brought his new truck to Powerhouse for a full build and was simply blown away with their service. From consultation to parts selection to install, the entire process was seamless, on time, and on budget. Communication was constant and they were always quick to answer questions. Truck came out perfect...highly... read full comment
February 2026
THE BEST!!! Thomas and crew are on the top of their game!!! Thank you for making dreams come true!!!
