S&S CYCLE Crankcase MK-Series 4-1/2" — accepts up to 4.5" cylinders, 4.695" spigot bore, Black – 17-26 Touring, 17-25 Trike, 17-25 CVO

The demand for performance-based parts is growing, and M8 engines are making more power every day. These crankcases provide a stronger base than stock to handle increased output without frame modifications. 🔧

• Accepts cylinders up to 4 1/2"
• Redesigned with a 4.695" spigot bore to accept larger-bore cylinders
• Stock deck height for compatibility
• Machined, close-fitting oil scraper to reduce oil carryover
• Large volume sump for improved oil control

Like the originals, this version scrapes more oil than stock and delivers greater reliability for high-performance builds. 💪