Bolted to the engine crankshaft, the flywheel serves as the mounting surface of the clutch assembly. The flywheel also acts as a heat sink to dissipate heat. Many of today’s medium and heavy-duty truck flywheels are not designed to be resurfaced. The ring gear has been mounted forward on the flywheel, near the friction surface. Even the slightest removal of friction surface material will result in interference or damage to the ring gear. AMS offers new no-core flywheels for most popular medium a