KM552 IMS 18X9 6X139.7 ET00 CB106.1 MATTE BLACK GLOS BLACK LIP KM552 IMS 18X9 6X139.7 ET00 CB106.1 MATTE BLACK GLOS BLACK LIP KMC KM552 IMS Machined W Black Lip Wheels 8x6.5 20x9 +18 Alloy wheel KM552 IMS Machined W Matte Black Lip KMC. The KM552 IMS is a reimagined version of our famous Impact race wheel, tailored for your street and trail vehicle. Featuring a robust monoblock construction and simulated beadlock design, the KM552 is the perfect style additive for your truck, Jeep, and SUV. We took the IMS performance even further. We now offer the KM552 in 18 diameters and your choice of 6 and 8 lug bolt patterns for HD applications.