| The early OEM clutch pump master cylinder has a 13mm bore. 13x20 (measured.) The master cylinder got a smaller piston for 2001 (the ones with the silver levers.) This is good for about a 10% reduction in pull force.
When using the larger bore 16x18 (the smallest one Brembo makes) you'll find that it makes the lever harder to pull than the stock master. This should be used with an oversized slave cylinder for a reasonable pull. If you have a 2001 or later updated slave cylinder you'll be OK. |