The T143 Long Block Engine is a premium S&S Cycle long-block assembly engineered for high-performance V-twin applications.
- S&S B3 cylinder heads CNC-machined with two-bolt exhaust flanges.
- S&S 635 easy-start gear drive cams and 1.725:1 rocker arms for .674" total lift.
- S&S Super Stock™ T2 crankcases with reed breather valve and three-piece flywheels.
- S&S high-flow oil pump and cam cover.
- S&S premium high-performance tappets.
Made in the USA. 🇺🇸
T143-specific or custom exhaust required; does not include carburetor, intake, or ignition system.
Fits in stock chassis with no cutting or frame modifications necessary; revised oil routing on '99–'06 Touring models eliminates the need for an oil line installation kit.
Professional installation recommended; verify fitment and local emissions regulations before purchasing.