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JIMS 5-SPEED TRANSMISSION BOXES FOR 4-SPEED BIG TWIN
Category dedicated to 5-speed gearboxes manufactured by JIMS, designed specifically for Harley-Davidson Big Twin engines. These transmissions are the ideal replacement to upgrade or repair the primary and secondary transmission in classic and modern models.
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ALL BALLSJIMS 5-Speed transmission cases for 4-speed Big Twin
Version: Se requieren piezas especiales para construir una transmisión de 5 en 4, Rodamiento primario , All Balls (Jims #8050 S&S 56-5100)These cases are manufactured from 356-T6 aluminium and machined using state-of-the-art CNC equipment. This 4-speed to 5-speed conversion…
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ZodiacJIMS 5-Speed transmission cases for 4-speed Big Twin
Version: Se requieren piezas especiales para construir una transmisión de 5 en 4, Cojinete del contraeje (Jims #8048, S&S 56-3034)These cases are manufactured from 356-T6 aluminium and machined using state-of-the-art CNC equipment. This 4-speed to 5-speed conversion…
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S&S CYCLEJIMS 5-Speed transmission cases for 4-speed Big Twin
Version: Se requieren piezas especiales para construir una transmisión de 5 en 4, Casquillo del adaptador del cojinete del eje principal, S&S (Jims #8051, S&S 56-1068)These cases are manufactured from 356-T6 aluminium and machined using state-of-the-art CNC equipment. This 4-speed to 5-speed conversion…
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JIMSJIMS 5-Speed gearboxes for 4-speed Big Twin – Basic assembly, 1970-1989
These cases are manufactured from 356-T6 aluminium and machined using state-of-the-art CNC equipment. This 4-speed to 5-speed conversion…
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Eastern MC PartsJIMS 5-Speed transmission cases for 4-speed Big Twin – Gear shift shaft spacer #33114-79
Version: Se requieren piezas especiales para construir una transmisión de 5 en 4, Buje guía del eje de la palanca de cambios (OEM 33114-79)These cases are manufactured from 356-T6 aluminium and machined using state-of-the-art CNC equipment. This 4-speed to 5-speed conversion…
About this category
Includes complete gearbox assemblies to facilitate the switch to a 5-speed ratio, improving motorway riding. Compatible with Evolution, Twin Cam and Milwaukee Eight engine families in Big Twin configurations. JIMS parts offer durability and mechanical precision to ensure smooth and reliable shifting. Ideal for restoration, customisation or performance enhancement projects on Harley-Davidson motorcycles requiring a robust, high-quality transmission.