S&S Cycle 17-23 Oil-Cooled M8 Touring MK136 Black Edition Engine

S&S Cycle has built a strong reputation for creating powerful, reliable crate engines that are ready to install right out of the box. Now, they're bringing that proven performance to your 2017 and newer Harley-Davidson Touring model with the MK136 Black Edition Engine. This isn't just an upgrade; it's a complete engine package designed to put a massive smile on your face every time you twist the throttle.

At its heart, this engine features S&S's MK-Series Crankcases paired with a huge 136 cubic inch displacement. To maximize airflow and power, it's equipped with high-flow cylinder heads that include +1mm oversized intake and exhaust valves, which are also .030 inches longer than stock to improve valve-train geometry. These heads also feature .605-inch max lift valve springs and an enlarged cooling passage around the exhaust seats, cast from a high-strength alloy. Inside, you'll find forged pistons, patented dual-spray piston cooling jets with precision machined oil scrapers, and an enlarged oil sump with a contoured floor that allows oil to drain back easily. This engine also comes with an S&S performance oil pump and cam support plate, premium tappets and tappet cuffs, and billet aluminum covers for a clean look. Champion spark plugs are included to get you running.

This complete engine package is designed for a direct installation into your M8 Touring bike. It's important to note that engine noise and damage resulting from abuse are not covered under warranty, and it is the purchaser's responsibility to ensure suitability for their specific application. This engine is not CARB approved and cannot be shipped to California.