S&s Cycle V124 Long Block Engine

The S&S Cycle V124 Long Block Engine delivers uncompromising power and reliability for your custom build or upgraded Evolution Big Twin. Built with premium components and meticulous attention to detail, this engine is engineered to provide exceptional performance and longevity. Upgrade your ride with the legendary S&S Cycle V124.

Description

This S&S Cycle V124 Long Block Engine is designed as a bolt-in solution for '84-'99 Evolution Big Twin engines and '70-'99 custom chassis equipped with an alternator-style primary. The specially machined cylinder heads allow the use of a stock length manifold, while the engine is designed to accommodate both EFI and carburetor setups. The crank and case are machined for a crank position sensor, providing compatibility with modern ignition systems. This long block features S&S cylinder heads, S&S valve springs, forged rocker arms, a 640 cam, a three-piece flywheel assembly, a 1.671" diameter crankpin, 0.927" wristpins, a high-volume high-pressure oil pump, electric compression releases, and forged pistons. All these features combine to provide a powerful and reliable 124 cubic inch engine. The engine is made in the USA to exacting standards. To unlock the full potential of this powerhouse, a performance ignition and carburetor are required.

Features & highlights

• Unleash exceptional power with the 124" displacement.
• Experience enhanced performance with the included 640 camshaft.
• Enjoy peace of mind with the high-volume, high-pressure oil pump.
• Benefit from improved starting with electric compression releases.
• Ensure durability with forged pistons and rocker arms.
• Designed for easy installation in Evolution Big Twin or custom chassis.
• Proudly made in the USA with premium components.

Technical specifications

• Brand: S&S Cycle
• Displacement: 124"
• Bore Size: 4-1/8"
• Stroke Length: 4-5/8"
• Compression Ratio: 10.8:1
• Camshaft: 640
• Piston Material: Forged
• Crankpin Diameter: 1.671"
• Wristpin Diameter: 0.927"
• Type: Long Block
• Color/Finish: Chrome, Natural

Important to know

This engine requires a performance ignition and performance carburetor for optimal operation. Carburetor re-jetting will be necessary. This is a long block engine; additional components may be required for complete installation.

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