S&S Cycle 124" Big Bore Engine Kit

Transform your motorcycle's performance with the S&S Cycle 124" Big Bore Engine Kit. This comprehensive, bolt-on performance package is engineered to deliver a significant boost in power and torque, making it an ideal motorcycle performance kit for enthusiasts seeking a substantial engine upgrade without the hassle of extensive modifications.

Description

The S&S Cycle 124" Power Package is a meticulously engineered bolt-on engine upgrade designed to elevate your riding experience. Featuring a massive 124" displacement, this kit boasts an aggressive 11.1:1 compression ratio, achieved with a 4.250" bore and 4.375" stroke. The updated fins not only enhance cooling but also give your engine a distinct, custom look. Crucially, this kit requires no case machining, simplifying installation and saving you time and money. At its core are durable forged pistons, ensuring long-lasting reliability under extreme conditions. Proudly Made in the USA, the S&S Cycle 124" Big Bore Engine Kit includes a robust billet aluminum oil pump/cam plate, Quickee pushrods, precision hand-assembled tappets, billet aluminum tappet cuffs, an S&S 550 camshaft, and high-performance valve springs.

The included oil pump/cam plate is precision-machined from billet aluminum, featuring independent scavenge sections for superior oil control and a remarkable 44% flow increase on the supply side and 58% increase on the scavenge side. Debris screens and a camchest magnet protect your engine, while the adjustable pressure relief valve allows fine-tuning even after installation. The Quickee pushrods ensure efficient valve train operation, complemented by tappets assembled to exacting tolerances for reduced valve train noise and low leak-down rates. Billet aluminum tappet cuffs with a hard anodized black coating provide enhanced tappet stability for high-lift and high-RPM situations. The S&S 550 camshaft is specifically designed for big bore applications, working in harmony with high-performance conical single wire valve springs that accommodate camshafts up to 0.605" lift, ensuring optimal valve control and power delivery.

Features & Highlights

• Effortless Power Upgrade: Achieve a massive 124" displacement and 11.1:1 compression with a simple bolt-on kit, eliminating the need for complex and costly case machining.
• Uncompromising Durability: Equipped with robust forged pistons and updated fins for enhanced cooling and a premium aesthetic, ensuring long-term reliability and performance.
• Optimized Oil Management: Experience superior lubrication and engine protection with a billet aluminum oil pump/cam plate, featuring a 44% increased supply flow, 58% increased scavenge flow, and an adjustable pressure relief valve.
• Precision Valve Train Components: Benefit from S&S Quickee pushrods, hand-assembled tappets for reduced noise, and billet aluminum tappet cuffs providing enhanced stability in high-lift/high-RPM scenarios.
• High-Performance Camshaft & Springs: Integrate an S&S 550 camshaft, specifically engineered for big bore applications, paired with high-performance valve springs capable of handling up to 0.605" lift for maximum power delivery.
• American Made Quality: Trust in the superior craftsmanship and engineering of a performance kit proudly Made in the USA, built to meet the highest standards.

Technical Specifications

• Product Name: Performance Kit
• Type: Big Bore
• Model: Power Package
• Units: Kit
• Displacement: 124"
• Bore Size: 4.250"
• Stroke Length: 4.375"
• Compression Ratio: 11.1:1
• Cooling System: Oil Cooled
• Cam Drive Type: Gear
• Color/Finish: Black, Non-Highlighted Fins
• Features: Quickee Pushrods w/Chrome Covers, Includes Outer Drive Gears
• Vendor Part Number: 310-1053C

Important to Know

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