This is a new set of 101.6mm Custom cylinders. This kit requires Over sized Case and Heads to handle the 4" Bore, Liners are already per cut for 6 stud heads. Cylinder is longer, Designed to be "cut to fit" for long stroke or long rod engines. 

Cylinders: Cast Iron.

Kit Includes: 4 Cylinders

Part # VW101T1L

***Machine Work Required, Bigger Case and Heads Required***