'19+ silverado 4 pot brake upgrade

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mikez71

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'19+ Silverado and a year or two later standard on SUV's also I believe..
Mine supposedly from a '25 silverado.
I had to do the following...

1. You WILL NEED spacer washers. (9/16")
I had some pretty decent 1/2" - .105" thick washers.
13.60mm (17/32") ID (slightly small, some washers wouldn't fit over bolt. Need grinding)
26.75mm OD, could probably go upto 30mm or so.
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With .105" washers, clearance was ~.065" on outboard side and ~1.55" on the inside (rotor to caliper bracket)
I think anything .10" to .20" *should* work.
.150" is about perfect thickness by my estimate.
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Have ordered these.. https://www.amazon.com/dp/B000CFQ4SK
(ARP 200-8535), 1" OD, 14.3mm ID, no chamfer, parallel ground, hardened, .120" thick.

2. Re-locate driver side hose bracket when using stock hoses. Hose too short at full lock.
Drilling a new hole about 1" away does the trick. (check lock to lock, there isn't a lot of wiggle room either way)
Passenger side could use a minor adjustment (bracket bend) but pretty much fine.
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3. Both sides were very close to the edge of relief cut on the upper mounting ears.
I -almost- had to grind the caliper. (You may have to)
I filed the corner of the caliper ear just in case. (Photo below before filing)

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after filing
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Banjo bolts appear identical.
'19+ hoses are a little longer, but the brackets may need adjusting.
 
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mikez71

mikez71

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Got my ARP washers (200-8535)
All measured .1220" thick +/- .0005 (accuracy limit of my digi calipers anyway)

For reference about half of my old washers (from bulk lot) measured .1065" and a few strayed up to .110" approximately.
Not bad, but I'll sleep better at night with the ARP's in there.

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