The Benelli Imperiale 400 Rolon Brass Chain & Sprocket Kit (KIT HORC-367) consists of brass-plated plates, a strong solid-bush O-ring chain with 109 links, and induction-hardened 14T/46T carbon-steel sprockets. It is zinc-coated for excellent wear and rust resistance which makes it OEM-level quality, long-ride durability, and low-maintenance performance.