1999 - 2002 Audi S4 ST-22 Rear 328mm Big Brake Upgrade Installation Manual
Some different models or years of vehicle may use different sized fasteners. Every effort has been taken to correctly identify the proper sized tool for each job. Occasionally, the manufacturer may use an alternate fastener. Check that each tool correctly fits the fastener before loosening or tightening it. The following tools and equipment will be needed:
14mm wrench (in some cases, 9/16” may be required)
11mm box wrench (in addition, an 11mm flare wrench is also recommended)
10mm wrench or socket
10mm Allen (hex) wrench
8mm Allen (hex) wrench
Vise-grip or pliers
Needle-nose pliers or small flat-blade screwdriver
Torque wrenches capable of 10-85 lb-ft settings
Small drip tray or several rags
Small funnel or suitable means of filling master cylinder reservoir Brake bleed bottle 1 pair of jack stands or other means of supporting vehicle DOT 3 or 4 Brake Fluid. Check manufacturer’s recommendation for compatibility. StopTech recommends flushing brake fluid every 1-2 years, or more often under severe usage conditions. If not done recently, the installation of a brake kit is an excellent opportunity to refresh your brake fluid, or to upgrade to a higher-performance fluid, such as Motul 600.
Step 1
Raise Vehicle, and Remove Wheels
Note: All photographs show a left-hand side installation, unless otherwise noted. Some of the images in this manual may not be of the vehicle noted, but they give a proper representation of the correct installation. StopTech recommends working on one side of the vehicle at a time, so that reference can be made to the other side, if any uncertainty arises during the installation.
Warning: Never leave any vehicle supported with only a jack. Always use jack-stands. A level, stable and clean surface, suitable for supporting the vehicle on jack-stands, should be used for the installation.
For a rear kit installation, block the front wheels, and release the parking brake, then break loose the lug nuts on both rear wheels before jacking up the car.
Refer to the owner’s manual to identify the correct location of the jack for raising the vehicle. Jack up the vehicle, and secure it on a pair of jack stands, again referring to the owner’s manual for jack location joints.
After securing the vehicle at a convenient height, remove the front wheels. To make it easier to access the brake line fittings, turn the steering either toward or away from the side that you’re working on, depending on the orientation of the caliper.
If you’re installing a leading caliper, turn the steering toward the side that you’re working on, and if you’re installing a trailing caliper, turn the steering away from the side that you’re working on. This will make it easier to access the caliper bolts.
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