PRO GUIDEThe introduction
4-Speed Complete Transmissions
of the Knucklehead and the 4-speed in 1936 marked an important point in the development of American motorcycles . " Many consider the period of 1936-84 the holy grail of Harley-Davidson ," says transmission expert Bert Baker . " In 2010 , we released the Baker 4-speed with modern improvements to carry on the legacy . In recent years , we temporarily discontinued the Baker 4-speed complete transmission . However , due to continuing demand , we have decided to run a limited supply . " Favored by those inspired by the old school cool , garage builders and riders of the nostalgic persuasion , this transmission offers the worry-free convenience and reliability of a new Baker Drivetrain product . " The external architecture of our sand-cast ( A356-T6 ) 4-speed transmission case was modeled after factory cases to capture all the details and character of the original design . But we made many functional upgrades to address shortcomings of the original design like leaks , serviceability and durability . " The loose rollers on the main drive gear were replaced with a radial ball bearing . The bronze bushings on the gearset were replaced with caged needle bearings . We added a provision ,
hidden in the back of the case , for an electronic speedo , but retained the traditional worm gear speedo provision on the front of the case . The stock ' Fred Flintstone ' shift detent was replaced with a snot-slick linear ball-bearing detent for that smooth ‘ snick-pop ’ shift quality you expect from us ." True to the original 1936 through mid-1980s , a hidden transmission vent is designed into the ratchet . Features include billet steel machined and case-hardened shift systems ( FL , FX and N1 ) that rotate on Permaglide bushings for a smooth , repeatable shift each time . Baker Klassic kicker gears and offset kickarm come as standard . The modern 4-speed gearset is made out of 8620 gear steel and rides on needle bearings , not bronze bushings . It has the vintage style cast kicker cover with traditional 1- piece release rod and Baker heavy duty throwout bearing , is a direct bolt-in on most models and is sold with a five-year limited warranty .
BAKER DRIVETRAIN Haslett , Michigan , USA Tel : 517 339 3835 sales @ bakerdrivetrain . com www . bakerdrivetrain . com
S & S - Dyna Qualifier 2-into-1 Exhaust
The H-D Dyna platform has a cult-like following with people constantly working to push more performance out of their bikes . S & S has thrown gasoline on their fire with the launch of this ' King of the Baggers ' race-inspired Qualifier 2-1 exhaust . Available in brushed stainless and Guardian Black finishes , these exhausts feature full heat shields , equal-length head pipes and a stepped header to " make power and rattle cages . Like all of our exhausts , these are designed and made in the USA ." If you are looking for the perfect ' dance-partner ' for this Qualifier 2-into- 1 , S & S recommends its Air Stinger - " take the existing high flow Stealth air cleaner and replace the air smoothing Stinger with a similarly shaped filter element . The increased filter surface area equates to a + 55 % gain in airflow over a factory filter in an M-8 .
S & S CYCLE INC . Viola , Wisconsin , USA Tel : 608 627 1497 sscust @ sscycle . com www . sscycle . com
38 AFTERMARKET MOTO DESIGN - MARCH 2024 www . AMDmag . com