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Old 10-02-2019, 03:16 AM
staleg's Avatar
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Bolt on Replacement calipers for GM metric?

I have a Fat Man MII Stage 3 IFS with GM metric calipers and GM bolt pattern on my hot rod.
Wilwood and others offers bolt on replacement calipers with twin pistons for the standard GM metric calipers often used on MII IFS kits.

Do you know if these bolt on replacement calipers fit on to the typical C-shaped brackets used on the aftermarket MII kits?
Or do they only fit the standard GM spindles factory equipped with metric calipers?

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Old 10-02-2019, 07:16 AM
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Call Wilwood and request a spec sheet for the calipers you are interested in, then with that information you can measure your current brackets to see if they fit or will need modification.
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Old 10-02-2019, 08:03 AM
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I have found that the Wilwood metric replacement calipers work in place of any metric caliper. Those flat metal brackets don't have as mush surface for the caliper to push on as seen on the GM spindles but they work fine
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