Jims 5-speed Transmission Assembly Harley Davidson Softai 1340 1990-99 Polished

Harley DAVIDSON softail Jims overdrive transmission perfect S&S Motor upgrade? POLISHED TOP RANGE hIGH PERFORMANCE WIDER GEARS retails 4650!! 5 gears same ration as a 6 but a LOT STRONGER ! we also have Joms Fat 5 Right Side drive and? for 5 speed win cam too-? !! Pictures show internals with a black case but this is? Polished case retails nearkly 5K!!!?

The JIMS Fat-5 Overdrive are 5-speed transmissions with wider gears to handle the extreme peak loads on the transmissions with todays high power engines and big tires with a lot of traction. These peak loads rise far above the loads for what standard gears were designed to endure. The JIMS Fat Gear transmission are equipped with gears that are 18% up to 53% wider, depending on the load each gear set must carry. Gear ratio's are: 1st 2.94:1, 2nd 1.93:1, 3rd, 1.31:1, 4th 1.00:1, 5th 0.886:1 overdrive (stock is 1:1). Note: Custom application. Because of the width of the gears this transmission is +.560" (13mm) wider than stock at the transmission cover. This may interfere with exhaust and/or oil filler spout. Necessary modifications must be made.

Fits: > 90-99 FXST (NU) (OVERDRIVE)

YOU CAN TAKE THE INTERNALS OUT SELL THE CASE AND USE IN A BAGGER OR DYNA TOO! MESSAGE ME FOR DETAILS? mIKE CUSTOM CRUISERS uk?

Fat 5 OverdriveTen years ago, 96- to 106-cubic-inch street engines were considered big; today, they are only average at best. Todays typical big-street engine falls into the 120-something cubic-inch neighborhood, with some engines ranging up to 155 inches and even larger. Monster mills easily double a stock engines power and torque, placing enormous stress on a bikes drivetrain. When ground-pounding power is hooked up to the pavement through high-torque clutches and sticky tires, peak loads rise above what stock transmission gears can handle. JIMS designed the Fat 5 overdrive gearbox to handle such loads.

The Fat 5 overdrive transmission fits both Evo and Twin Cam chassis and is available as a complete transmission or replacement Superkit gearset, which includes gears and shafts assembled to a billet trapdoor. JIMS compact shifter technology uses sliding shift rings for gear engagement, which results in quicker and smoother shifting. To support high-power loads from big engines and massive tires, JIMS took advantage of the compact shifter design and re-designed every gear to increase width and strength. The resulting benefits are increases in gear width from 18 to 53 percent, depending on the loads subjected to each gear. Due to the thicker gears, the transmission is 0.870-inch wider on the right side, which may cause interference with the stock exhaust or other components.

The Fat 5 also uses the same shift ring technology that is utilized in the 06 Dyna and all 07 factory transmissions. Shift-ring technology provides 100-percent tooth-to-tooth contact, resulting in quick, smooth, and positive shifts.

JIMS Fat 5 transmission is actually a five-speed gearbox, with Fifth gear being an overdrive. An overdrive transmission offers the benefit of rpm reduction when in top gear without affecting the ratios of the intermediate gears (First through Fourth). The Fat 5s internal gear ratios are as follows: close-ratio 2.91 First, 1.93 Second, 1.31 Third, 1.00 Fourth, and 0.886 Fifth. Fourth gear results in a direct-drive 1:1 ratio between the engine and rear wheel, while Fifth gear provides a true overdrive ratio, which overdrives the rear wheel compared to the engine. Essentially, the Fat 5 concept takes the ratios of a five-speed gearbox and spreads them equally across four gears, with Fifth gear acting as an overdrive. This is the hot setup for high-torque big-tire applications, because four gears are sufficient for quick acceleration, while the overdrive Fifth gear offers the benefit of rpm reduction for smooth highway cruising.