Ball Bearing Disc Brake
TM
Installation and Setup Guide
PLEASE READ THE SAFETY AND WARRANTY INFORMATION INSIDE
955-310589-000 Rev. B © SRAM Corporation, 2005
2 955-310589-000 Rev. B
BB7 and BB5 Installation & Set-Up Guide English
3SRAM Corporation July 2005
CONGRATULATIONS!
You have selected the best mechanical disc brakes your money can buy! This manual contains important information for
installing, setting up and adjusting your new brakes. To ensure that your Avid brakes perform properly, we recommend that you
have them installed by a qualified bicycle mechanic. We also urge you to follow all of our recommendations to help make your
riding experience safe, enjoyable and trouble free.
First, here is some information to get you started:
TRI-ALIGN CALIPER POSITIONING SYSTEM
Avid disc brakes use a unique alignment system called Caliper Positioning
System (CPS). These stacks of concave and convex washers allow the
caliper to be perfectly aligned with the rotor, regardless of imperfections in
the mounting tabs on the fork or frame, giving you full, square pad contact.
TOOLS NEEDED
• 2.5 and 5mm hex wrenches
• T-25 TORX® wrench
• Cable cutters
• Adjustable torque wrench: 2.8-10Nm (25-90 in-lb) range
• Safety Glasses
MAKE SURE YOU HAVE THE RIGHT BRACKETS
fronts:
rears:
CPS
Hardware
CPS Bolt
115-373202-500
203 Rear Forged
115-372202-600
185 Rear Forged
115-376202-200
160 Rear Forged
115-376402-600
160 Rear Extruded
115-373602-300
203 Front QR20
115-373502-600
203 Front Boxxer
11.5373.102.800
203 Front Forged
115-372102-900
185 Front Forged
11.5376.102.500
160 Front Forged
11.5376.302.900
160 Front Extruded
11.5372.302.300
185 Front
Post Mount
11.5373.302.200
203 Front
Post Mount
English BB7 and BB5 Installation & Set-Up Guide
4 955-310589-000 Rev. B
Brakes are a safety-critical item on a bicycle. Improper setup or
use of brakes can result in loss of control or an accident, which
could lead to a severe injury.
Avid brakes are a performance product that offer increased
stopping power over brakes that you may be used to. This
greater power requires less effort to lock-up a wheel when
braking. Awheel lock up might cause you to lose control and
possibly cause injury.
It’s your responsibility to learn and understand proper braking
techniques. Consult the owner’s manual for your bicycle and
a professional bike dealer.
Practice your riding and braking techniques on a flat and level
surface prior to aggressive riding.
The effectiveness of braking is dependent on many conditions
over which Avid has no control. These include the speed of the
bicycle, type and condition of the riding surface, braking lever
force, proper installation and maintenance of brakes, brake
lines, hydraulic fluid, levers, brake pads, condition of the bike,
weight of the rider, proper braking techniques, weather, terrain,
and a variety of other factors.
Avid brakes and levers are not intended for use on any
motorized bicycle or vehicle. Such use could result in a
serious personal injury.
ALWAYS RIDE UNDER CONTROL
Remember, it takes longer to stop in wet conditions. To reduce
the possibility of an accident and minimize trail erosion, you
should avoid locking-up your wheels.
FOLLOW THESE INSTRUCTIONS CAREFULLY
If you do not understand the instructions, have the installation
done by a professional bike mechanic.
Only levers designated for side-pull brakes, such as Avid’s
Speed Dial series and FR5 levers, can be used with the
mountain Ball Bearing Disc Brake. For best operation and
performance Avid highly recommends that you use an Avid
Speed Dial lever and premium quality brake cable and
housing. Failure to do so will reduce the performance of
the system.
Avid disc brakes are compatible with 44mm, 6-bolt,
International Standard hubs.
We recommend 32 or 36-spoke wheels with a 3 or 4 cross
spoke lacing pattern. Contact your specific wheel
manufacturer for more specifications.
Do not use radially spoked wheels.
Disc brakes are OIL SENSITIVE! Do not spray any solvents
or lubricants in the vicinity of the rotors or brake pads.
NEVER touch the pad surface or rotor surface with your
fingers. Doing so will significantly degrade braking
performance.
Do not touch the braking surface of any rotor with your bare
hands, because the oils from your fingers will degrade its
performance. Always wear gloves, or handle the rotor by its
spokes.
Disc brakes become very hot during use. Do not touch the
caliper or rotor immediately after use. Make sure the brake
has cooled down before making any adjustments.
SAFETY INFORMATION
WARNING
BB7 and BB5 Installation & Set-Up Guide English
5SRAM Corporation July 2005
INSTALL ROTOR
Mount the rotor to the hub using the supplied T-25 TORX®bolts and tighten to the specified
torque. Avid logo MUST face out. Install the wheel into the fork or frame.
WARNING:
IF YOU ARE USING A HUB WITH A REMOVABLE SHIM, YOU MAY NEED LONGER ROTOR MOUNTING
BOLTS
. CONTACT THE HUB MANUFACTURER FOR THE RECOMMENDED BOLTS.
MOUNT FRONT CALIPER
Mount the front caliper to the fork.
2
1
TORQUE TO:
6.2 Nm (55 in-lb)
TORQUE TO:
9-10 Nm (80-90 in-lb)
Remove...
OR
I.S. MOUNT
Loosen the CPS bolts, then bolt the caliper to the mounting
tabs. Tighten the mounting bolts to the specified torque.
Check that the caliper moves freely on the CPS hardware.
POST MOUNT
Remove the mounting bracket but leave the CPS bolts and
washer stacks intact. Bolt the caliper directly to the fork. Snug
the bolts, then back them out 1/8th to 1/4th turn. Check that
the caliper moves freely on the CPS hardware.
...then mount direct
Snug, then back off
1/8th to 1/4th turn
Loosen before
mounting
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