Collection: transmission parts 4 speed

Four gears, kick starter, and that raw, mechanical feel that gave old Harley-Davidson motorcycles their soul – before technology overcomplicated things. The 4-speed transmission is the basis of classic Shovelhead and earlier Harley-Davidson motorcycles, as well as many vintage custom builds. It's a simple, robust construction that generations of mechanics and riders know inside and out – but it's precisely this simplicity that makes it especially important for all internal components to be precise and in good condition, as these old systems have no electronic fine-tuning, only pure mechanics. In our offer, you will find 4-speed transmission parts for Harley-Davidson and classic custom motorcycles: gears, shift shafts, bearings, shift forks, shifter components, gaskets, and other internal parts. Factory-spec, period-correct replacement parts are available, ideal for restoration projects and preserving the original character of classic motorcycles. The quality parts are precisely manufactured from durable materials to reliably withstand continuous use, even in decades-old engines. Whether you are restoring a classic Harley-Davidson or repairing a transmission as part of an old-school custom project, you will find the parts that exactly fit your 4-speed transmission with us.