S&S Cycle T143 Long Block Engine - 143ci - Black - 310-0833A

Unleash extreme performance with the S&S Cycle T143 Long Block Engine. This powerhouse is designed for riders demanding maximum horsepower and torque, delivering an unparalleled riding experience. Built with premium components and legendary S&S engineering, the T143 transforms your motorcycle into a true high-performance machine.

Description

The S&S T143 Long Block Engine features S&S Super Stock™ T2 crankcases, ensuring exceptional strength and durability. The CNC-machined S&S B3 cylinder heads, equipped with two-bolt exhaust flanges, optimize airflow and combustion. High-lift S&S 635 easy-start gear drive cams, paired with 1.725:1 rocker arms achieving a .674" total lift, provide aggressive valve timing for maximum power output. The engine also includes an S&S high-flow oil pump and cam cover for superior lubrication and cooling. Designed to fit in a stock chassis without cutting or frame modifications, this engine simplifies the upgrade process. Experience the thrill of American-made performance with the S&S Cycle T143 Long Block Engine.

Features & highlights

• Experience massive power with the 143 cubic inch displacement.
• S&S B3 cylinder heads ensure optimal airflow and combustion efficiency.
• Easy-start S&S 635 gear drive cams provide improved starting and smooth operation.
• S&S Super Stock™ T2 crankcases provide superior strength and durability.
• High-flow oil pump keeps your engine running cool and protected.
• Designed for easy installation in stock chassis (no cutting or frame modifications).
• Proudly made in the USA with premium components.

Technical specifications

• Brand: S&S Cycle
• Displacement: 143"
• Bore Size: 4.425"
• Stroke Length: 4.625"
• Compression Ratio: 10.5:1
• Cylinder Heads: S&S B3 CNC-machined
• Crankcases: S&S Super Stock™ T2 with reed breather valve
• Cams: S&S 635 easy-start gear drive
• Rocker Arms: 1.725:1 (.674" total lift)
• Oil Pump: S&S high-flow
• Exhaust Flanges: Two-bolt
• Type: Long Block Engine

Important to know

• T143-specific or custom exhaust system is required.
• Carburetor/intake and ignition system are NOT included and must be purchased separately.
• Revised oil routing on '99-'06 Touring models may affect oil line installation.