DESCRIPTION
Stock OEM manual transmissions on Mazda RX7/RX8 have the counterweight built into the flywheels. The F1 rear counterweight is needed when using F1 light flywheel. F1 light flywheels are NOT supplied with counterweights and must be purchased separately.
Amazing price but these ship direct from F1 and they typically are very SLOW to ship. So, order this choice only if patient.