David left us a review on our site for the stage 3 power pack!!

"Hands down the greatest place in North America for you smart needs. Not only am I incredibly impressed with the customer service, I'm also bonkers over the quality and care or onto the parts and installation. John was my main contact, and I have to say by the end of the day I felt confident and comfortable due to his diligence and level of continued care in my experience. ​Stage 3 Power Pack is a great investment. I was pushing 42mpg over the Grapevine on the trip home!"


One of the best ways to quickly increase performance and track times!





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smart fortwo 451 MADNESS Power Pack - Stage 3 Online Store - smart car Parts and Accessories