Motorcycle Crankshafts & Components

Your motorcycle’s crankshaft is a very important component rotating in the lower part of the motor. During the power cycle, pistons move the crankshaft via connecting rods thanks to the pressure from the burnt gases. The crank moves the pistons during the intake or compression stroke, and the whole cycle repeats over and over again. In four-stroke motors, the crank also drives the camshaft responsible for the right valve timing. As the crankshaft and connecting rods are subject to lots of friction, there are engine bearings meant to protect these parts and minimize their wear.

Your motorcycle’s crank is capable of withstanding thousands of revolutions per minute, enduring considerable vibrations and great stresses. Sometimes, this component can even crack, which ultimately leads to its replacement. However, in most cases, engine bearings wear out first. They can be of a roller, ball, or plain type, but all of them help to fix the crank in the block without any play. ProX, Hot Rods, S&S Cycle, and many other reliable companies we work with offer top-notch sport/street bike crankshafts & components, and you can purchase them being certain in their high quality!