Classic Style Meets Modern Performance
The Baker 6-into-4 transmission is a game-changer for those who value both classic style and modern performance . This transmission brings the best of both worlds to the table , offering the iconic look of a 4-speed case with the smooth , reliable shifting of a 6-speed . It ' s perfect for those looking to enhance their ride without sacrificing the timeless appeal of their bike . Brian Buttera of Buttera Metal Werx ( Florida ) is a master at blending artistry with engineering , and he knows the value of top-notch components . That ' s why he chooses the Baker 6-into-4 transmission for his custom builds . Brian ' s meticulous attention to detail and commitment to excellence make the 6-into-4 a natural fit for his work . Along with the Baker 4-speed , these transmissions allow Brian to craft bikes that not only look incredible , but also deliver outstanding performance on the road . The Baker 6-into-4 transmission has a Baker OD6-based transmission on the inside , with a range of cases , shift systems and cover options available . The benefits are that it smooths out the highway rattle and stays right in the powerband where riders want and need it to stay . It comes in two different versions . Baker ' s 1936-64 case , with no ' ear ', to work with the factory primary , and a 1965-1986 version that includes the primary ' ear ' bosses . These can be used with stock primary applications , belt drive applications , or running no primary plate at all . For the 1936-1964 tapered mainshaft applications , note that the 6-into-4 case does not contain an alignment track or a provision for the primary adjustment bolt that you would normally find on a stock case . There are four different mainshafts available for Knucklehead , Panhead or Shovelhead : 1936 to 1964 tapered mainshaft ; 1965 to 1969 tapered mainshaft ; 1970 to E1984 tapered mainshaft and late 1984 to 1986 long tapered mainshaft . The bearing door will be built with a polished billet aluminum bearing door ; the top cover will be built with a polished , forged aluminum top cover with neutral switch . The sprocket / pulley is not included in the complete transmission assembly - speak with Baker for these components .
BAKER DRIVETRAIN Haslett , Michigan , USA Tel : 517 339 3835 sales @ bakerdrivetrain . com www . bakerdrivetrain . com
TBR 2-1 Chief and Challenger Options
Comp-S
Megaphone Gen II
With over 40 years of experience in the motorcycle industry and inspired by its deep-rooted racing heritage , Riverside , California based Two Brothers Racing has a choice of three 2-into-1 full system performance exhaust options for Indian Chief and Challenger models . With 100 % stainless steel construction Two Brothers Racing ( TBR ) say they are " designed for maximum torque and increased horsepower " and deliver an impressive 24 lbs weight saving - that is 10 lb lighter than the 34 lb stock exhausts that they replace and upgrade . The three 2-into-1 design options are the Comp-S , Megaphone Gen II and Shorty Turnout . The TBR designs includes stainless steel heat shields , accept the stock O2 sensor , are fully hand TIG welded and available in stainless or Ceramic Black finish , with steel or carbon fiber end-caps on the Comp-S and Shorty Turnout .
TWO BROTHERS RACING Corona , California , USA Tel : 714 550 6070 www . twobros . com
Shorty Turnout
Sportster S Heat Shield Liner Kit
Already available for most Indian Big Twin and Scout models , and most H-D Touring , Softail and Sportsters (' 14 - ' 22 XL and ' 22 - ' 24 Nightster ), Avon Lake , Ohio based sound and heat management specialist Design Engineering has now added a heat shield liner kit for the stylish Sportster S . Designed to insulate the outer heat shield surface , without compromising the looks of the bike , DEI liners are completely hidden when installed - precision-cut to fit inbetween the exhaust pipe and the heat shield .
Easy to install , with no permanent modifications needed , they are dual-layer constructed of aluminum and their proprietary Dura 2000 durable , longlasting insulating material offers over a 60 % reduction in the heat on the outer surface of the stock shield .
DESIGN ENGINEERING INC Avon Lake , Ohio , USA Tel : 440 930 7940 johng @ designengineering . com www . deipowersports . com
44 AMERICAN MOTORCYCLE DEALER - FEBRUARY 2025 www . AMDmag . com