Quote:
Originally Posted by speedster911
Another option and a few dollars less is the ATE 23mm MC. I think some places label it as Mercedes Benz MC. I am doing all four corners with Boxster calipers on my 75 and doing a MC upgrade.
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Up through '76 911 used unboosted brakes, from '77 on they use boosted brakes.
Though some of the m/c bore sizes are the same the boosted and non boosted m/c are not interchangeable
for boosted brakes the '78 up 930 m/c(23.8mm) is a bolt on
for non boosted brakes the ATE (ports face left) # 03-2123-3402.3 also 23.8mm. There is also a version w/ right facing ports.
It's best to buy a kit which includes the correct actuating rod, angled fluid feeds and flex hose to connect to the reservoir.