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S&S CYCLE Super Stock Big Bore Engine Case for Evolution Big Twin - 3.625"
Regular price $1,995.95 USD
Category:
Engine Case - Super Stock® Big Bore - 3.625" - Evolution Big Twin
The S&S CYCLE Part Number 31-0001 Super Stock Big Bore Engine Case is designed for powerful performance on Evolution Big Twin motorcycles. This 3.625-inch bore cylinder case is compatible with any stroke up to 5 inches and most stock-length connecting rods, making it an ideal upgrade for performance-oriented builds. Precision-machined to support an oil filter assembly mounted on the front of stock motor cases, this unit ensures reliable lubrication and durability during high-performance riding. All races are line-honed, and the breather cavity is carefully machined to optimize breather timing for maximum oil scavenging, contributing to smoother engine operation and reduced oil blow-by.
Features:
- Big bore design: 3.625-inch diameter for increased displacement and power
- Compatibility: Supports strokes up to 5 inches and most stock-length connecting rods
- Machined for EFI fitment: Ensures seamless integration with fuel-injected systems
- Precision machining: All races are line-honed for enhanced bearing support and longevity
- Optimized breather cavity: Ensures efficient oil scavenging and engine breathing
- Complete kit: Includes crankcase bolts, washers, nuts, mounting studs, breather fittings, oil line fittings, and more
- Durable components: Features a magnetic drain plug, oil pressure switch, and oil screen for reliable oil management
- High-quality bearings and seals: Timken® bearing assembly, oil seal, cam needle bearing, and main bearing race for dependable operation
- Made in the USA: Constructed with quality craftsmanship for performance and durability





