Ceramicspeed Oversize Pulley Wheel Aero System Guide

Mounting &
Maintenance
Oversize Pulley Wheel Aero System
For SRAM Red/Force AXS

Maintenance
No set of rules can be made for how often your Oversized Pulley Wheels are
to be maintained. Maintenance frequency depends on the weather conditions
that you are riding in.
A worn chain will increase the wear on the pulley wheels significantly, so
make sure that you change your chain before it is completely worn out. Under
normal conditions, we recommend that you service the Oversized Pulley
Wheels when you have ridden under wet conditions, washed your bike or each
time you lubricate the chain. For normal maintenance, add a drop of oil into
the lubrication points (see the page 3) for optimal performance. Make sure
to position the OSPW System horizontally to ensure that the oil reaches the
Oversized Pulley Wheel bearings.
We recommend the use of CeramicSpeed Oil on the OSPW System. This can
be purchased from the CeramicSpeed dealers worldwide or from our webshop.
Watch our maintenance video on ceramicspeed.com in the Support section.
When travelling, your OSPW System will not fit in the bike travelling bag. We
recommend that you dismount the whole rear derailleur and pack it aside.
Extended Maintenance
Approximately once every half a year we recommend that you perform an
extended maintenance. In this case, you should dismount the Oversized Pulley
Wheels from the cage, remove the seals from both sides and clean all parts in
a shaker with degreaser. After cleaning, dry the components off, put two drops
of oil onto the CeramicSpeed Balls, place the seals back on and remount
the Oversized Pulley Wheels. When dismounting the cage plates, you will
need a 2.5 mm Allen Key for the pulley wheel bolts (see page 3) and a 2
mm Allen key for the tower bolts. To remount the screws, tighten the pulley
wheel screws up to a max torque of 1,5 Nm and the tower bolts up to 0.9
Nm. For this, a torque tool is recommended. If you’re riding in wet and muddy
conditions, we recommend you perform an extended maintenance more
frequently and replace oil with All Round Grease for better protection.

Mounting the CeramicSpeed Oversized Pulley
Wheel System Aero for SRAM Red/Force AXS
Pos. Description
1 Pulley wheel bolts
2 Tower bolts
3 Back cage plate
4 Upper pulley
5 Lower pulley
6 Cage pivot
7 Front cage plate
8 Rotation stop screw
9 Pulley wheel
lubrication points
Tools required:
For the installation of your new CeramicSpeed Oversized Pulley Wheel
System Aero for SRAM Red/Force AXS you will need the following tools:
A: CeramicSpeed supplied 4 prong tool for main mounting nut
B: 2mm Allen key
C: 2,5mm Allen key
D: Chain Tool
E: Torque wrench (0,9, 1,5, 3 and 6 Nm)
F: Marker in good condition
A B C D E F

To ensure the very best in riding performance it is vital that your new
OSPW System is mounted correctly. Follow these instructions to install your
OSPW Aero and SRAM Red/Force AXS:
1. Begin with your bike mounted in a stand.
Shift the derailleur up so that the cage can
rotate past the body. Remove the rear wheel.
2. Remove the rear derailleur from the bike.
Remove both pulley wheels and the back half
of the pulley cage.
4. Remove the main center nut and the stock
cage. There will be a small amount of spring
tension on the cage due to the clutch.
Set aside the spring and center nut for
reuse.
3. Hold the stock pulley cage (not just the
derailleur) and loosen the main center nut
with the CeramicSpeed special tool but do not
completely remove the mounting nut.
When the center nut is loose enough, allow
the rotation stop screw to move past the stop
point on the derailleur body to release the
spring tension.
Mounting Manual

8. Align the OSPW Aero cage plate with the back
of the derailleur, inserting the spring post into
the low (L) tension setting on the cage (A). The
D shaped interface will not be aligned at this
time.
6. Using the OSPW Aero front cage plate,
rotate the D-shaped center post inside the
derailleur counter clock wise until it stops.
Using a marker, mark the end of the center
post along the same line as shown on the
back of the OSPW Aero cage plate. Remove
the OSPW Aero cage plate.
5. Unbox the CeramicSpeed OSPW system
and remove the rotation stop screw (to be
reinstalled once the cage is mounted).
Dissasemble the OSPW System by
removing all 4 bolts from the back of the
OSPW System. Set aside the 4 bolts, back
cage plate, and both pulley wheels.
7. Mount the factory spring into the derailleur
body. Be careful to place the spring post
into the correct hole; Note: The correct hole
is deeper than all others.Ensure the spring
sits completely into the derailleur body all
the way around.
A
A

9. Thread the original cage nut on the center
screw into place using the provided 4 prong
tool. Finger tighten the nut until firm, and then
unthread 360 degrees (1 full turn)
10. Take note of the mark you placed on the center
post bolt in relation to the alignment mark on
the OSPW System cage.
Rotate the cage clockwise (looking at the nut
and bolt interface) and ensure that the nut does
not rotate or tighten.
Rotate the cage until the alignment mark on
the cage lines up with the mark placed on the
threaded post. Once aligned, press the cage
against the derailleur body to secure the D
interface, you should feel when the cage locks
into place. You may need to wiggle the cage
slightly to seat the engagment.
Using the included 4 pronged tool, secure the
center nut to a torque of 6Nm.
Note:
You can confirm the cage is installed completely
when the center post threads protrude beyond
the head of the mounting nut.
11. Rotate the OSPW System cage forward and
install the rotation stop screw with a 2.5mm
hex key. Tighten to a torque of 3.0Nm.

12. Install the 15 tooth pulley on the upper post
and the 19 tooth pulley on the lower post of
the OSPW Aero cage. Ensure the etching on
the pulleys face outward (facing the cage plate
with the logo). Align the back cage plate &
install the 2.5mm screws for each pulley to a
torque of 1.5Nm, and the 2.0mm screw for the
center and lower towers to a torque of 0.9Nm .
13. Install the derailleur onto the bike. Shift down
to the bottom (smallest cog) and install the
rear wheel. To install the chain, hold the cage
back to be horizontal to the ground. Feed the
chain from the back of the cage, between
the pulleys aiming to exit the cage in front of
the upper pulley. Pull half the chain through
the system.
14. Ensure the remainder of the chain is not
twisted, and feed the free end into the back
of the cage and around the lower pulley.
15. Install the derailleur onto the bike. Shift
down to the bottom (smallest cog) and
install the rear wheel. Follow the chain
length guide below to cut the chain to the
appropriate length. Ensure the derailleur
hanger is accurately aligned, check the
upper and lower stops of the derailleur, and
set the b-limit gap following the factory
SRAM guidelines; 14mm for a 26T cog,
10mm for a 28t cog, 5mm for a 33T or 36T
cog. Adjust the trim for proper alignment
between the cogs and pulley wheels.
Confirm successful shifting through all gear
combinations. If in doubt, have a qualified
mechanic make the final gear adjustments.

Test the present chain length acc. to the description below.
If it turns out to be necessary to change the chain length, follow the
description below.
Chain length
STEP 1: Place the chain on the smallest cog on the cassette. To find the correct chain
length, pull the two chain ends together, just as you would when needing to cut a chain
to length. The lower part of the cage should start to move downwards, away from the
cassette, as referenced in the second image.
Test the present chain length acc. to the description below.
If it turns out to be necessary to change the chain length, follow the
description below.
Chain length
STEP 1: Place the chain on the small chain ring, through the derailleur cage, and the
smallestcog on the cassette. If you are using an electronic group set that does not allow
the ‘smallsmall’ combination, shift to the smallest cog possible while in the small front
chain ring. To findthe correct chain length, at the bottom span between chain ring and
derailleur cage, pull the two chain ends together. The lower part of the cage should start to
move downwards, away from the cassette, as referenced in the second image.

STEP 3: With the chain now cut to length it is important to test the clearance of the OSPW Aero
System when the rear derailleur is set in the largest cog on the cassette. Just as the arrow
indicates the cage should be able to rotate counter clockwise. It is important that there is some
clearance between the upper pulley wheel of the OSPW Aero System and the largest cog on the
cassette. If you find the clearance is not enough, adjust the B-tension accordingly.
STEP 2: When tension is applied on the chain and the OSPW System appears to be aligned
as the diagram above, cut the chain 1 full link (inner + outer link combination) shorter to
ensure adequate chain tension is present in all gears (small chain ring/smallest cog allowed
on the cassette).
1 link shorter
than step 1

Up to 6 years warranty
Thankfully, we do not have to deal with warranty issues often. Nevertheless,
we are happy to introduce you to our comprehensive warranty program.
Standard products 4 years
Bottom Brackets
Pulley Wheels
Wheel Kits
Headsets
Oversized Pulley Wheel Systems
Single Bearings
Coated products 6 years
Bottom Brackets
Pulley Wheels
Wheel Kits
Headsets
Oversized Pulley Wheel Systems
Single Bearings
We are committed to manufacturing and delivering the best ceramic bearing
products in the industry. Should your CeramicSpeed product not live up to your
expectations, and this is caused by defects in materials and/or workmanship,
we encourage you to contact us.
Register your product within the first 30 days of purchase on
ceramicspeed.com/cycling under the section Support. Should you thereafter,
and within the warranty period need to file a claim, please return to the same
section on our website and fill in your claim. We will always strive to revert to
you concerning your claim within 24 hours.
ceramicspeed.com/cycling/support
V1-1909
Up to Lifetime warranty
Thankfully, we do not have to deal with warranty issues often. Nevertheless, we are
happy to introduce you to our comprehensive warranty program.
Standard products 4 years
Bottom Brackets Pulley Wheels Wheel Kits Headsets
Single Bearings
Coated products + OSPW Cages Lifetime warranty
Bottom Brackets
Pulley Wheels
Wheel Kits
Headsets
Single Bearings
We are committed to manufacturing and delivering the best ceramic bearing
products in the industry. Should your CeramicSpeed product not live up to your
expectations, and this is caused by defects in materials and/or workmanship, we
encourage you to contact us.
Register your product within the first 30 days of purchase on ceramicspeed.com/
sport under the section Support. Should you thereafter, and within the warranty
period need to file a claim, please return to the same section on our website and
fill in your claim. We will always strive to revert to you concerning your claim within
24 hours.
ceramicspeed.com/sport/support