Great product great customer service. Bought this thermostat for a 600+hp 335i and it regulates temperature to a T. The car never had a oil cooler before and even now with 2x 20row coolers the car warms up just as quick. The straight through design is genius and hasn't let up once on track days or everyday on the street . Very happy with this product and have recommended it to anyone in the market for one.

Simply Wow I've ordered all kinds of automotive stuff from many different vendors over the years, and was blown away by Improved Racing. The items I needed were well engineered, complete systems (no chasing down small items that aren't included) and very well priced. Not only that, but the shipping was very reasonable and extremely fast for the cost. I will be ordering from them again.

Excellent experieince as an Australian, Its always a concern when buying goods from a USA for the first time, but I have to say I had an excellent experience. The goods were exactly what I ordered, good value for money and I was able to trace them every step of the way via USPs track and trace. Goods arrived in 6 days (USA- AUS) as advertised, in good order and condition. Happy customer !

Shipped extremely fast and cater to overseas soldier Shipped extremely fast. This company shipped to a U.S soldiers living at APO address overseas. Thank you for having that option. A lot of car companies don't ship APO because they believe it'll cost the company extra even tho it's actually considered a U.S territory address.

Will definitely buy here again I ended up in a pickle and needed a replacement oil cooler asap. The company that made my original piece had folded, so I started looking around for a new vendor. Via interwebs I found Improved Racing and their prices and inventory were suitable for my needs. I ordered the bits I required and had them in my hands even quicker than expected. A flawless experience. I will definitely buy from them again and have already recommended to auto enthusiast friends.