G-Force Transmissions—Stronger, Lighter, More Efficient G-Force transmissions utilize a facetooth engagement system to ensure reliable shifting at speeds exceeding 14,000 RPM. All gears are manufactured from military grade 9310 high nickel alloy steel to hold up under severe torque loads. ANDREWS 4 SPEED BIG TWIN TRANSMISSION GEAR SETS from Biker's Choice. Our hours 86 N. Rolling Meadows Drive, Fond Du Lac, WI 54937 (888) 927-6199. Toggle navigation. Home; Showroom Manufacturer Models. You Selected: Store » Biker's Choice » Transmission & Final Drive.
G-Force Transmissions and Long ShiftersNow you can gain the competitive edge with drivetrain components that can handle the increased power, torque, andtraction of today’s high performance racing and street machines. G-Force and Long Shifters manufactures superioraftermarket automotive transmissions and shifters that are built to the highest standards for today’s highly competitiveracing environment.
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 introduction of the Knucklehead and the 4-speed in 1936 marked an epoch in the history of American motorcycles. Many consider the period of 1936-84 the holy grail of Harley fuckin Davidson. To carry on that legacy we developed the BAKER 4-speed, available with ratchet top or jockey top lids. The external architecture of our 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 maindrive 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. 1936 to 1984 Knucklehead, Panhead or Shovelhead. 1936 to 1964 tapered mainshaft. 1965 to 1969 tapered mainshaft.
1970 to E1984 tapered or splined mainshaftShift System:We manufacture three shift drums for the 4-speed; the FX & FL types with conventional shift patterns and the N1 style. The N1 drum takes the FX pattern and relocates neutral down below 1st for a N-1-2-3-4 pattern as an alternative to the standard 1-N-2-3-4 pattern. Great for foot clutch and performance applications.Shift Lever Orientation:The FL shift drum in a Jockey top cover is setup for a top pull (1936-46) or bottom pull (1947-65). The N1 shift drum in a Jockey top cover is setup for bottom pull only.
The FL shift drum in a Ratchet top cover is bottom pull only. The FX and N1 shift drum in a Ratchet top cover is top pull only. For further information, please contact us through the website chat, email us at [email protected], or call us Monday-Friday 8AM-7PM EST/EDT at 517-339-3835. Case Finish OptionsYou have 3 different options for case finish on the 4-Speed.Raw Blasted FinishWrinkle Black FinishShow Polished FinishShift Drum OptionsWe manufacture 3 shift drums for the 4-speed; the FX & FL types with conventional shift patterns and N1 style.The N1 drum takes the FX pattern and relocates neutral down below 1st for a N-1-2-3-4 pattern as an alternative to the standard 1-N-2-3-4 pattern. Great for foot clutch and performance applications.Mainshafts AvailableMainshaft lengths We manufacture 4 different length mainshafts for the 4-Speed; the 1936-64, 1965-69 (1st year of electric start), 1970-E84 and a 1970-E84 splined mainshaft for a modern clutch setup. To see our mordern Splined Shovel Clutch BAKER does not make the late 84 (diaphragm clutch) style tapered mainshaft. All mainshafts are designed for caged needle bearings for 3rd gear, no more metal to metal like stock.Klassic Kicker GearsKicker GearsAll BAKER 4-Speeds come standard with our Klassic Kicker Gears.
Made out of 1018 HR Steel, tumble finished to around a 20 micro and heat treated to 50-55 RC; these gears roll smooth as glass.Kicker Cover OptionsWe manufacture and sell 6 different kicker covers making the 4-Speed completely customizable. Kicker covers come in different finishes ranging from the standard chrome cover to the raw replica cover. To see the full line of kicker covers available. Depending on the choice of cover and finish, charges might apply.4-Speed Gears with Lead In RampsGearset4-speed gears and shafts are manufactured with 8620 steel.
Vacuum carburized heat treat gives a case hardness of 58-62 Rockwell ‘C’. Gear tooth profiles are ground and finished with diamond tooling after heat treat to correct the tooth distortion that naturally occurs when you put a chunk of steel in a very hot furnace. Take off the shifter lid on our 4-speeds and turn the shafts; you will hear silence because the involute profiles are perfect. The designers of this transmission back in the '30s would be envious of the improvements we made to their design with modern manufacturing processes. We added lead-in helical ramps on the shift clutches to improve shift quality. All bronze bushings were replaced with modern low friction bearings.Case Options & ProvisionsThe 4-Speed Transmission case was modeled after the factory 1936 and 1965 cases to capture all the details and character, but we made some modern improvements as well. Our 1936-64 case is a no ear case which utilizes the stock style speedo gear drive while our 1965-E84 is an ear case.
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Both cases have the option to use the speedo gear drive location but we also molded an electronic speedometer mounting boss to follow the ear on our 1965-E84 case only. By tucking the electronic speedometer provision mount by the ear you can conceal any modern components keeping your bike looking stock. The electronic speedometer would utilize a stock 1996-2006 speed sensor, PN 74437-96.
Pending what type of electronic speedometer you use, an additional speedometer recalibration box might have to be purchased, BAKER PN 95E-56B.Ear & No Ear Case OptionsGear & Electronic Sensor LocationsRecalibration Box 95E-56BBAKER 1936-64 CaseAlignment TrackLike the stock 1936-64 4-Speed the BAKER 1936-64 cases have an alignment track on the bottom of the case (in between the studs), tongue-and-groove for the transmission plate to prevent lateral movement of the transmission. Any forward and aft adjustment are done through the adjuster boss location for the primary chain. This type of setup ensures a positive alignment when running belt drive applications, where you don’t have an inner primary to lock the motor to the transmission.Section View of Internal VentTop CoversAll 4-Speed top covers have a hidden vent system which allows the transmission to breathe. Machined into the internal walls of the billet top cover, the breathing system flows through the ratchet cavity and out through the shift cover.
Jockey top covers are vented out through the bottom side of the cover just below the neutral switch. To see all top cover choices and information. 4-SpeedRatios1st Gear2.502nd Gear1.703rd Gear1.254th Gear1.00Speedometer Gear Drive UnitsSpeedo Gear DriveAll BAKER 4-Speed gearsets come with the gear drive ring installed. Using the list below; pending the year and model of your motorcycle you will have to use the following gear drive unit OEM part number or equivalent for your speedometer to function correctly. TERM AND CONDITIONS. BAKER Drivetrain reserves the right to change prices, terms or policies at any time without notice. Orders can be pre-paid using Visa, MasterCard, American Express, Discover or PayPal.
All orders not pre-paid will be sent C.O.D. Certified check or money order only unless pre-approved for company check acceptance. Any orders from outside the USA must be pre-paid in US funds via wire transfer; a $30 transfer fee will apply. Prices shown are F.O.B.
Haslett, MI.LIMITED WARRANTY POLICYBAKER™ transmission assemblies, transmission kits, primaries, and oil pans are guaranteed to the original purchaser to be free of manufacturing defects in materials and workmanship for a period of 5 years from the date of purchase or up to 50,000 miles. BAKER™ clutches, kicker cover kits, belt drives, F6F kit, reverse systems, covers and accessories are guaranteed to the original purchaser to be free of manufacturing defects in materials and workmanship for a period of 2 years from the date of purchase or up to 24,000 miles - whichever occurs first.
If the product is found by BAKER™ to be defective, such products will, at the option of BAKER™, be replaced or repaired at cost to BAKER™.In the event warranty service is required, the original purchaser must call or write BAKER™ immediately with a description of the problem. If it is deemed necessary for BAKER™ to make an evaluation to determine whether the transmission assembly or transmission kit or accessory is defective, the entire transmission assembly, whether originally purchased as an assembly or kit, must be properly packaged and returned prepaid to BAKER™ with a copy of the original invoice of purchase. If after an evaluation has been made by BAKER™ and a defect in materials and/or workmanship is found, BAKER™ will, at BAKER™ option, repair or replace the defective part of the assembly.WARRANTIES FOR 'INSIDER SPECIAL' PRODUCTSDue to the uniqueness, low price and assembly outside of typical production process of products indicated as Insider Special products, purchasing these Insider Special products include a warranty so to guarantee the original purchaser to be free of manufacturing defects in materials and workmanship for a period of 1 year from the date of purchase or up to 12,000 miles.
We have provided extended options for you to purchase below.RETURNS AND EXCHANGESAny merchandise returned for any reason (exchange, credit or modification) must be accompanied by a Return Goods Authorization (RGA) number or it will be refused. Call BAKER™ to obtain this number prior to returning goods for any reason. There is a 15% re-stocking fee for all returned items. Great Product Helpful StaffI needed a Baker 4 Speed for a build. I was familiar with the Baker name. I went thru the web site and came up with a part number.
I contacted a Baker technician thru the Website and we went over what options I wanted the transmission to perform as compared the the Part Number I had selected The Tech was helpful and Baker kept me informed as the transmission was built. I really liked that I was dealing with the factory and not a third party dealer, that didn't know the Baker Product. Baker products are excellent and Baker is where I will go for my Transmission needs. Baker order processProduct is great - service was very disappointing.
The product was supposed to be in stock when purchased and to be shipped within days for a show. After 2 weeks and several messages I was finally able to speak with a fellow and was informed the parts were in casting and would be several more weeks.
Several weeks later another extension of time was needed and the part finally arrived 3 months later. The truth at time of purchase would have been greatly appreciated or at least be proactive and let the customer know there is a problem with the order, or at least return calls. I am hoping this is a one time occurrence. It would be a shame to see such a well respected US company.
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