S&S CYCLE Super Stock® Alternator Style Engine Case — 3.5" bore, fits up to 5" stroke, EFI-ready, black powder-coated – 84-86 Big Twin, 84-91 Touring, 85-91 Softail, 91 Dyna, 85-91 FXR

The alternator-style engine case is a precision-machined cylinder case engineered for high-performance V-twin builds. It accepts a front-mounted oil filter assembly, is machined for EFI fitment, and features line-honed bearing races plus a precision-machined breather cavity to optimize breather timing for maximum oil scavenging.

• Stock bore cylinder case compatible with most stock-length connecting rods and strokes up to five inches
• Machined to accept an oil filter assembly that mounts on the front of stock motor cases
• All races are line-honed and the breather cavity is precision-machined to improve oil scavenging
• Kit includes crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil line fittings, oil pressure switch, oil screen, spring and plug
• Also included: sprocket shaft Timken® bearing assembly and oil seal, pinion shaft main bearing race, cam needle bearing assembly, oil pump drive shaft bushing, and installation instructions
• Machined for EFI fitment for simple modern fuel system integration

Built to be durable and serviceable for both rebuilds and performance applications. Made in the USA 🇺🇸