Close ratio gears cure the problem of the car coming off cam by losing engine speed during a gear change and provide increased reliability through being substantially stronger. We supply straight cut gear set (not for the faint hearted as they are noisy) which are suitable only for track race use, and Helical cut gear sets. Straight cut gears do not include 1st or reverse gears - use existing or replace. Helical cut gear sets for 3-synchro MGA gearboxes include a straight cut 1st gear. For full details and specifications please contact your nearest Moss branch.