StopTech.com_Audi_S4_Rear_Big_Brake_Installation_Manual.pdf

Installation Instructions

Audi S4

1999 - 2002

ST-22 Rear 328mm

Big Brake Upgrade

98-130-1331

Rev. A 08-06-05

COMPONENT IDENTIFICA

OMPONENT IDENTIFICA

OMPONENT IDENTIFICATION

TION

AeroRotor and Hat Assemblies

Caliper Brackets

High-Performance

Street Pads

Calipers

Stainless Steel Braided Lines

and Hardware

Audi S4 Rear Big Brake Kit

This is a representative photograph. The actual

components in your kit may appear slightly different.

3541 Unit A, Lomita Boulevard, Torrance, CA 90505 (310) 325-4799

www.stoptech.com 2

APPLICA TION DISCL

TION DISCL AIMER

APPLICA

TION DISCL

AIMER

Caliper Clearance

Most 17” wheels will clear the outer diameter of the caliper for a 328mm or 332mm rotor kit. For a

355mm kit, a minimum 18” wheel is typically required, and for a 380mm rotor kit, a minimum 19”

wheel is needed. The more critical clearance, however, is the gap between the spokes of the wheel

and the face of the caliper. Do not assume that a larger-diameter wheel will automatically clear the

face of the caliper.

To determine the actual metal-to-metal distance from the stock rotor face to the inside of the wheel

spokes, refer to the StopTech website at www

.stoptech.com, and click on the ‘Wheel Fitment’ link

on the “Technical Information” page. BEFORE printing out a copy of the wheel fitment drawing

for your vehicle, click on the ‘How do I use the charts?’ link at the top of the page, and review the

instructions carefully, to ensure that you have a full understanding of how to accurately measure the

critical wheel clearances. Only then should you click on the link for your vehicle, and print out the

appropriate wheel fitment drawing, to use as a measurement template.

www

www.stoptech.com

.stoptech.com

It is very important that you verify the accuracy of the scale of the printout by matching both a

width and length dimension on your vehicle. Dimensions are shown in millimeters, but one di-

mension in each direction is also shown in inches, and StopTech recommends adding at least 2mm

of additional clearance to these dimensions. Follow the instructions carefully, to produce a fitment

template, and take care to ensure that your measurements are very precise. If you have any ques-

tions or difficulties, please contact the StopTech Customer Service Department on (310) 325-4799 -

extension 105, or send an e-mail to support@stoptech.com

support@stoptech.com

support@stoptech.com.

Note: F

ote: F

ote: Final fitment of the wheel to the caliper is the r

inal fitment of the wheel to the caliper is the r

inal fitment of the wheel to the caliper is the responsibility of the customer

esponsibility of the customer

Wheel Spacers

Wheel spacers can provide extra clearance to the outer face of the caliper. This will also space out the

entire wheel, widening the track width of the vehicle. Fender clearances should be checked on

lowered cars, and longer lug studs or wheel bolts are usually required.

Note: The Wheel Industry Council has issued guidelines advising that wheel spacers not be

used. It is the responsibility of the customer to ensure that wheel spacers are properly

specified and installed.

Caliper

isclaimer

Many wheel-cleaning solutions contain strong acids that may damage the finish on any caliper or

aluminum anodized finish, especially the plating on the hardware. Check for adverse effects by

trying a small amount of the cleaner in question on an inconspicuous area. Avoid over-spraying,

and rinse cleaning solutions off as quickly as possible. StopTech is not liable for damage to calipers,

hats or bracket finishes, due to corrosive chemical exposure.

aliper

aliper, H

, H

, Hat and B

at and B

at and Bracket F

racket F

racket Finish D

inish D

inish Disclaimer

isclaimer

3541 Unit A, Lomita Boulevard, Torrance, CA 90505 (310) 325-4799

www.stoptech.com 3

APPLICA TION DISCL

TION DISCL AIMER (Cont

’ d.)

APPLICA

TION DISCL

AIMER (Cont

d.)

Brake N

oise

Certain brake pad compounds make more noise than others. Proper anti-squeal shim plates be-

tween the caliper pistons and backing plate of the pad help to reduce the problem. Anti-squeal

lubricants are also available, to reduce some of the noise. The reality is that performance pads are

more prone to brake squeal.

rake N

rake Noise

oise

Note: The customer is responsible for any squeal-related problems due to pad selection.

Brake

ANT!

The most common cause of brake vibration is improper bed-in of pads and rotors, or improper pad

selection for the specific driving environment. Rotor run-out may also cause vibration, but preci-

sion manufacturing and inspection typically mean that run-out is not an issue. Modern produc-

tion methods ensure that the rotor run-out is within +/- 0.002” when installed on a StopTech alumi-

num hat, and it controls thickness variation to within 0.0003”. Under the most extreme conditions,

any rotor may warp, but uneven pad deposition is a more typical cause of vibration. If the system

is not properly bedded-in, or if street pads are run on an open track, uneven pad deposits will occur,

causing an ever-worsening vibration. Failure to immediately address a pad deposition/vibration

issue may lead to permanent damage of the rotors. Please read and understand the bed-in proce-

dure included in this manual. If you have any questions, please contact the StopTech Customer

Service Department on (310) 325-4799 - extension 105, or you can e-mail directly to

support@stoptech.com

rake

rake Vibration -

Vibration -

Vibration - THIS IS IMPOR

THIS IS IMPOR

TANT!

ANT!

support@stoptech.com

support@stoptech.com.

Note: S

ote: S

ote: StopT

topT

topTech is not liable for vibr

ech is not liable for vibr

ech is not liable for vibrations caused by e

ations caused by e

ations caused by extr

xtr

xtreme usage or impr

eme usage or impr

eme usage or improper bed-in of

oper bed-in of

pads and rotors.

All trademar

All trademarks ar

ks ar

ks are pr

e pr

e proper

oper

operties of their r

ties of their r

ties of their respectiv

espectiv

espective o

e o

e owners. S

wners. S

wners. StopT

topT

topTech LL

ech LL

ech LLC is neither associated

C is neither associated

nor affiliated with, nor sponsored b

nor affiliated with, nor sponsor

ed b

ed by

Volkswagen/A

olkswagen/A

olkswagen/Audi.

udi.

3541 Unit A, Lomita Boulevard, Torrance, CA 90505 (310) 325-4799

www.stoptech.com 4

I mpor

mpor tant N

tant N otices

mpor

tant N

otices

Wheel Fitment

Do not assume that your wheels will fit. An outline drawing of your StopTech Big Brake kit is

available on our website at www

.stoptech.com. Measure the distance from the outer face of your

stock caliper to the inner face of your wheel spokes, or make a template according to the instruc-

tions on the website, to determine if a wheel spacer is necessary. DO THIS BEFORE YOU

INSTALL YOUR KIT!

www

www.stoptech.com

.stoptech.com

Cleaning of Rotors

The AeroRotors supplied with this kit are coated with a water-soluble, environmentally friendly

rust inhibitor. This coating MUST BE WASHED OFF WITH SOAP AND WATER before installa-

tion. Brake cleaner is not as effective as soap and water. Even if it doesn’t look as if anything is

coming off the rotor, the rust inhibitor is there, and must be entirely cleaned. Rotors will quickly

rust without protection, so if the rotor is not rusty, it’s still coated. After cleaning, you may see the

rotor start to develop a slight rust color. This is normal, and indicates that all of the rust inhibitor

has been removed.

Rotor and P

ad Bed-in

Proper rotor and pad bed-in is essential to the performance of your new brake system. Failure to

properly bed-in the brakes will seriously impact how well they work, and how long they will last.

The number one cause of brake vibration is uneven pad material deposition on the rotor. Proper

bed-in will greatly minimize such problems. Follow, as closely as possible, the bed-in procedure

detailed later in this manual, or refer to the StopTech website at www

otor and P

otor and Pad Bed-in

ad Bed-in

www

www.stoptech.com

.stoptech.com

.stoptech.com for further

information.

Safety N

otice

Improper handling of a vehicle, especially while raised and supported by jack stands, ramps or

other mechanical means, can cause serious bodily injury or even death. It is strongly recommended

that a trained, experienced mechanic, with proper equipment, install the Big Brake Kit supplied by

StopTech LLC. StopTech LLC assumes no liability, expressed or implied, for the improper installa-

tion or use of this product or its components.

afety N

afety Notice

otice

o o

Warranty

Liability N

Liability No

arranty

Automobile racing and performance driving, whether sanctioned or not, on or off the road, are

dangerous. Products used in such environments/applications are subject to stresses and conditions

outside of normal use, wear and tear. All equipment sold or provided by StopTech LLC is sold

WITHOUT WARRANTY, EXPRESSED OR IMPLIED. No warranty or representation is made to

the product’s ability to protect the user from injury or death. The user assumes all risk. StopTech

LLC is NOT responsible for any damage, consequential or otherwise, for equipment failure or mal-

performance after installation. Under no circumstances is StopTech liable for labor charges or loss

of use.

arranty

Contact S

Contact StopT

ech

If you have any questions about wheel fitment, rotor cleaning, or bed-in of a particular pad type,

please call StopTech’s Customer Service Department on (310) 325-4799 - extension 105, or you can

e-mail directly to support@stoptech.com

topT

topTech

ech

support@stoptech.com

support@stoptech.com.

3541 Unit A, Lomita Boulevard, Torrance, CA 90505 (310) 325-4799

www.stoptech.com 5

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