All joking about size aside, it does matter. The S&S T143 Long Block engine for 2008-later Harley-Davidson® touring models is the largest S&S engine that will fit in a stock Harley- Davidson® chassis. It’s big, 143 cubic inches. ‘Nuff said.
Since the introduction of the S&S T124 eleven years ago, it has continued to set the industry standard for aftermarket engines. The T124 has become the go-to choice for upgrading your late model Harley-Davidson® motorcycle and it remains a great choice today. However, there's a new sheriff in town. The T124's big brother just came to the party.
At double the HP of a stock motor the power of the T143 requires technical expertise for the installation and tuning along with an experienced rider. This is an ultra performance/ race engine. Longevity, engine noise, vibration and throttle sensitivity have all been compromised to reach this level of performance while fitting in a stock chassis and as such is not suitable for every situation. It is the purchaser's responsibility to consider the suitability for their application. Engine noise and damage from abuse is not covered under warranty.
S&S Proven Performance and 143 cubic inches, what more is there to say?
FITMENT
1999-2006 Harley-Davidson® carbureted touring models
2008-later Harley-Davidson® touring models
1999-2005 carbureted Dyna® Models
FEATURES AND BENEFITS
Fits in stock chassis – no cutting or frame modifications
S&S B3 cylinder heads CNC machined with 2 bolt exhaust flanges
S&S Super Stock T2 Crankcases with reed breather valve
3 Piece Flywheels
S&S high flow oil pump and cam cover
S&S 635 Easy Start gear drive cams and S&S 1:725 rocker arms for .674" total lift.
S&S Premium High Performance Tappets
6 months parts warranty
OPTIONS
Wrinkle Black or Stone Gray powder coat finish for 2007-Up models and Wrinkle Black or Silver for 1999-2006 models.
SUGGESTED ACCESSORIES
High Flow Injectors - S&S suggests using Ractronix fuel injectors, PN FI114700
Dynojet® Power Vision® for tuning
How S&S Cycles started: What started as a passion for speed, grew into the best known company name in the V-Twin high performance aftermarket. George J. Smith had to build his own parts to make his motorcycle faster. Now the company he founded manufactures the most prestigious line of "go fast" v-twin engine parts in the world. The company was started in the basement of his home in Blue Island IL in 1958, and moved to Viola, WI in 1969. In 2004 an additional facility was opened in La Crosse, WI.
