S&S CYCLE Super Stock 3.5-Inch Engine Case for Evolution Big Twin – Part No. 31-0055

Engine Case - Super Stock® - 3.500" - Evolution Big Twin

The S&S CYCLE Super Stock 3.5-inch engine case (Part No. 31-0055) is designed for optimal performance in Evolution Big Twin motorcycles. Crafted from high-quality materials, this case is machined to accept an oil filter assembly mounted on the front, compatible with stock motor configurations up to and including 5 inches of stroke. Its precision-machined breather cavity and line-honed races ensure maximum oil scavenging and efficient breather timing, contributing to the engine's overall durability and performance. The case is engineered for easy installation, including a comprehensive kit with crankcase bolts, washers, nuts, cylinder mounting studs, and all necessary fittings to facilitate a seamless assembly process. This model is also machined to accommodate EFI systems, making it a versatile choice for modern motorcycle builds.

Features:

• Machined to accept an oil filter assembly for front mounting

• Line-honed races and precision-machined breather cavity for optimal oil scavenging

• Includes comprehensive hardware kit with bolts, washers, nuts, and fittings

• Machined for EFI fitment to support modern electronic fuel injection systems

• Made in the USA with high-quality craftsmanship