S&S Cycle 124 Big Bore Power Package Engine Kit

Elevate your motorcycle's performance with the S&S Cycle 124 inch Power Package Big Bore Kit, engineered to deliver a significant boost in power and torque. This comprehensive bolt-on engine upgrade transforms your ride, providing the exhilaration you demand.

Description

Unleash extreme power with the S&S Cycle 124 inch Power Package, a complete engine upgrade designed for motorcycle enthusiasts seeking a substantial performance increase. This meticulously crafted kit boasts a massive 124" displacement, achieved through a 4.250" bore and 4.375" stroke, paired with an aggressive 11.1:1 compression ratio. Engineered for a straightforward installation, it's a true bolt-on solution that requires absolutely no case machining. At its core are durable forged pistons and an optimized oil-cooled system, ensuring reliability under high-performance demands. The kit includes a precision-machined billet aluminum oil pump/cam plate, featuring independent scavenge sections for the flywheel cavity and camchest, and a remarkable 44% increase in supply side flow with a 58% increase in scavenge side flow. Debris screens and a camchest magnet further protect your engine. The included S&S 550 camshaft is specifically designed for big bore applications, complemented by Quickee pushrods, hand-assembled tappets for reduced valvetrain noise, and billet aluminum tappet cuffs that ensure stability in high-lift and high-RPM situations. High-performance conical single wire valve springs, compatible with camshafts up to 0.605" lift, complete this robust package, all proudly made in the USA.

Features & Highlights

• Effortless Performance Upgrade: Experience a significant power boost with this bolt-on 124" Big Bore Kit, requiring no case machining for a straightforward installation.
• Optimized Engine Durability: Features robust forged pistons, updated fins for improved cooling, and billet aluminum construction for key components, ensuring longevity and reliability.
• Advanced Oil Management System: The precision-machined oil pump/cam plate offers a 44% increase in supply flow and 58% increase in scavenge flow, with independent sections, debris screens, and a camchest magnet for superior lubrication and protection.
• Superior Valvetrain Performance: Includes Quickee pushrods, hand-assembled tappets for reduced noise and low leak-down rates, billet tappet cuffs for high-RPM stability, and an S&S 550 camshaft designed specifically for big bore applications.
• High-Performance Valve Springs: Conical single wire valve springs are included, designed to work effectively with camshafts up to 0.605" lift, complete with top collars, keepers, valve seals, and bottom collars.
• Proudly Made in the USA: Benefit from S&S Cycle's commitment to quality and craftsmanship with components manufactured in the United States.

Technical Specifications

• Type: Big Bore
• Model: Power Package
• Units: Kit
• Bore Size: 4.250"
• Color/Finish: Black, Non-Highlighted Fins
• Displacement: 124"
• Stroke Length: 4.375"
• Cam Drive Type: Chain
• Cooling System: Oil Cooled
• Compression Ratio: 11.1:1

Important to Know

• Not for any Trike models.
• Intake/rocker cover gaskets not included.