Transmission Internals BT 4 spd era

18 products

Shop the range of aftermarket motorcycle transmission & final drive products at Pro Class Custom Parts.

$203.99

* Shift clutch (3-4 clutch) Replaces OEM 35440-38 * Replacement clutches are specially heat treated and shot peened for super durability. * 3-4 clutches are face milled and have longer lead in ra...

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JIMS

$291.99

* Standard O.D. is 2.314″, I.D. is 1.8802″. * It will depend on the amount of press fit and will determine the amount of line lapping required to fit new bearing and mainshaft. * Replaces OEM # 3...

ANDREWS PRODUCTS

$569.99

Stock main drive gear (4TH) 26 Teeth. * (1977-1986) (caged rollar) OEM 35067-77 & OEM 35067-84 * Replacement 4th gears are made with wider drive slots and steeper lead-in ramps for more positi...

ANDREWS PRODUCTS

$288.99

* Stock mainshaft 3rd (1.23 Ratio) (24T) * OEM 35306-59 * Replacements for stock mainshaft 3rd. The design of drive slots on mainshaft gear has been upgraded to include lead-in ramps for quicker, ...

ANDREWS PRODUCTS

$489.99

* 16T x 20T mainshaft 1st gear cluster with a 24T countershaft 1st gear. * Installation in ’80-86 4spBT requires purchase of a 21 tooth countershaft(1.82 ratio) 2nd gear AP-202160. * 2.60 Ratio wo...

ANDREWS PRODUCTS

$487.99

* 17T x 20T mainshaft 1st gear cluster with a 24T countershaft 1st gear. * Installation in 1980-86 4sp Big Twin requires purchase of a 21 tooth countershaft 2nd gear AP-202160. * Best choice for S...

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JIMS

$339.99

* Precision-machined replacement shaft * Is extended .750″ to allow more space between kicker arm and exhaust; keeps exhaust from getting scuffed Note: Longer Kick Starter Shaft For a cleaner, saf...

ANDREWS PRODUCTS

$252.99

* Stock 2nd gear with drive slots include lead in ramps for more positive 1-2 shifts. This 21 tooth gear fits 1941-1979. It will also fit later transmissions but requires one of the following list...

JIMS

$1,155.99

Features & Benefits:- * Kit Includes JIMS proven transmission parts topped off with a Jims Gasket set, together in one convenient package. * This is a big time saver. * Made in the U.S.A. Te...

ANDREWS PRODUCTS

$880.99

Close ratio 3rd gear set (1.35 ratio) (18Tx23T) * Transmissions built after mid 1976, to serial U-8959 (or higher) with caged needle bearings. * New design drive slots include lead in ramps for qu...

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JIMS

$896.99

Requires the below to complete: * 2 x JM-35961-52 = Brg; C/Shaft BT’77-84(2req) * 1 x JM-9020 = Brg; Trans Main BT’36-86 4spd * 1 x 25451 = Brg; M/Drive Gear BT’82-86 4spd * 1 x JM-8905 = Brg; Ma...