ABOUT 4AGE 20V BLACKTOP

– The Blacktop has a larger volume airbox. The opposite key distinction is the Silvertop airbox provides a horizontal split involving the lid and the base, as a result the bolts are wound in the major down.Stroking the crankshaft to a maximum 81mm will maintain the RPM functionality intact. Bores could be brought out to 83mm, but try out to help