In our quest to find a reliable and efficient air cleaner assembly, the Spectre Performance SPE-4790 caught our attention with its intriguing specifications. Featuring a 2.625″ inlet diameter and a slightly wider 2.75″ inside diameter, this unit promises optimized airflow without compromising filtration. Standing at a compact 2″ height, its design balances size and performance, making it a versatile component for various engine setups. As we installed and tested the SPE-4790, we appreciated the straightforward customer assembly process, which made the upgrade feel accessible even for enthusiasts with moderate mechanical experience. While it may not revolutionize airflow dynamics, this air cleaner assembly offers consistent performance, durability, and a clean aesthetic. Join us as we dive deeper into how the SPE-4790 behaves under real-world conditions and whether it justifies a spot in your performance upgrade toolkit.