Piston Ring Tension: The subject of piston ring tension has come up as a matter of interest in recent months. We stock several brands of piston rings. Fewer now than we once did. But none-the-less the … read more

JRC 650 TO 750 BIG BORE KIT INSTRUCTIONS DOWNLOAD PDF FILE HERE: TRIUMPH 650 TO 750 BIG BOREThank you for choosing our 750 conversion for your Triumph 650. Careful assembly and running in will greatly … read more

Almost all smoking or seized pistons at break-in can be traced to improper break-in procedure.  This graphic shows gas pressure (brake mean effective pressure) from the combustion  … read more