BLACKTOP 4AGE FOR SALE NO FURTHER A MYSTERY

– The Blacktop has a bigger volume airbox. One other key variance would be the Silvertop airbox includes a horizontal break up involving the lid and The bottom, as a result the bolts are wound in the leading down.Stroking the crankshaft to a greatest 81mm will maintain the RPM ability intact. Bores may be brought out to 83mm, but try out to help