Stock cups weigh 11.5g each
MP9 cups weigh 8.5g each
Total savings from both diffs = 12g
These cups may work on the centre diff as well. Just long enough to hold the disc brake in place. that would be another weight savings of 6g for a total of 18g.
At first glance, the differences are obvious. The parts that matter are the shaft, cross pin hole and o-ring groove, they're all the same....almost.
The o-ring groove in the MP9 cup is 0.198"
and the groove on the stock AE diff cup is 0.185"
When you put the stock oring on the new, larger MP9 diff cup, the cup won't go back in the diff housing. To correct this I shaved off a slight amount of material from the o-ring. Chucked up in the drill, I used a fine file (clean! no metal shavings) to take off a small amount. Takes the lightest touch to get it there, you'll know you're doing something if a black line is left on the file.
all finished.
MP9 cups weigh 8.5g each
Total savings from both diffs = 12g
These cups may work on the centre diff as well. Just long enough to hold the disc brake in place. that would be another weight savings of 6g for a total of 18g.
At first glance, the differences are obvious. The parts that matter are the shaft, cross pin hole and o-ring groove, they're all the same....almost.
The o-ring groove in the MP9 cup is 0.198"
and the groove on the stock AE diff cup is 0.185"
When you put the stock oring on the new, larger MP9 diff cup, the cup won't go back in the diff housing. To correct this I shaved off a slight amount of material from the o-ring. Chucked up in the drill, I used a fine file (clean! no metal shavings) to take off a small amount. Takes the lightest touch to get it there, you'll know you're doing something if a black line is left on the file.
all finished.
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