ALL OF THIS IS TOTALLY UNACCEPTABLE
We only use SPS Re-boring machines that can bore from 35m/m up to 120m/m.
We have 4 Horizontal honing machines, 1 Sunnen MBB1660
And 3 Tried and trusted Delapena Speed Hone And 3 portable Honing Heads.
All of our cylinders are bored from the base that is the right way! We then remove the last 2-3 thou of material by honing the cylinder surface according to the type of piston/rings used, This ensures a perfect ring seal, all ports edges are then chamfered and Exhaust bridges relieved. The cylinder then goes though a 3 stage cleaning process to remove all traces of honing past and swarf.
You can be sure that as Motorcycle Engineers we have the right equipment to take care of your Cylinders and we pride ourselves on our Workmanship.