Purchased to replace a cheaper kit I installed on my 2009 Ford Flex. The original kit (another brand) was half the price but only lasted 2 years. These Moog bearings are very smooth and quiet, I would say quieter than factory bearings and cheaper kits. For starters, you just had to get them. Update 4/30/2018 - Bought another kit for a 2013 Ford Flex. Went with MOOG straight away this time and they worked great. Build quality, worth the price. Now the car is super quiet. Apparently the genuine Ford part doesn't last more than 80,000 miles.