Cervélo R5-CX User manual

R5-CX RETAILER ASSEMBLY MANUAL

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TABLE OF CONTENTS
This manual is intended to guide ocial Cervélo retailers through the assembly and adjustment
of the Cervélo R5-CX. This manual outlines the process and procedure associated with the
installation of Cervélo components, as well as the routing of shifting and braking control lines
only. Proprietary parts referenced in this manual are available only through Cervélo Cycles Inc.
Failure to use the specied parts and follow these assembly instructions, may result in loss
of control while riding; and lead to serious injury. This manual is not intended to replace the
assembly and service instruction provided by third-party component manufactures, and assumes
that the assembler is a trained, professional bicycle mechanic. See https://www.probma.org/
CER-CXA-V1 2022-05-25
IMPORTANT INFORMATION
NOTE: Cervélo strongly recommends that
all assembly and adjustment procedures be
performed by an authorized Cervélo retailer.
If you are a Cervélo R5-CX consumer/
purchaser reading this manual we suggest
that before attempting to undertake any
of the procedures in this manual that you
consult your authorized Cervélo retailer, or
visit us at www.cervelo.com/support
NOTE: This manual was developed
to compliment the Cervélo General
User Manual, and is intended as
a supplement to the assembly and
installation instructions supplied by
the component manufacturers (provided
with this bicycle).
NOTE: All non-proprietary components
such as those from Shimano or SRAM are
available from your local distributor.
LIST OF TOOLS & SUPPLIES
This manual outlines a number of procedures
for making adjustments to the R5-CX bicycle. The
following tools and parts listed are required for
these adjustments. Cervélo strongly recommends
that all assembly and adjustment procedures be
performed by an authorized Cervélo retailer.
Important Information .................. 1
List of Tools & Supplies. . . . . . . . . . . . . . . . . 2
R5-CX Parts List .................... 3
R5-CX Frame Features................... 4
Small Parts ....................... 5
ST31 Stem ........................ 7
HB13 Handlebar ..................... 9
Frame & Component Preparation ..............11
Fork Preparation & Installation .............13
Brake Hose Routing. . . . . . . . . . . . . . . . . . . . 15
Electric Wire Routing & Installation. . . . . . . . . . . 17
Seatpost Assembly & Installation.............19
Di2 Battery Installation. . . . . . . . . . . . . . . . . 20
Aero Thru-Axle Installation ...............21
Tire/Rim Clearance. . . . . . . . . . . . . . . . . . . . 23
Intended Use of the R5-CX Bicycle ............24
R5-CX Torque Specications................25
R5-CX Frame Details ...................27
R5-CX Frame Geometry...................28
Cervélo Customer Support. . . . . . . . . . . . . . . . . 29
Tools
Bicycle workstand (types which
secure bike by the seatpost, or
pro-type stand with fork mount)
Torque wrench(es) with 2.5Nm to
15Nm range and adaptors:
Allen (Hex) head inserts:
2mm, 2.5mm, 3mm, 4mm, 5mm,
6mm, 8mm, 10mm
Open ended wrenches:
7mm, 8mm, 10mm, 17mm
Cable cutters
Pliers
Phillips-head screwdriver
Slot-head screwdriver
Tools
Pedal wrench
Lockring tools for brake rotors and
bottom bracket
Hydraulic bleed kit
Isopropyl alcohol
Di2 wire tool – Shimano
Good quality bicycle grease &
carbon assembly compound
Saw cutting guide (Park Tool SG-7.2
or equivalent)
Hacksaw (with carbon and
aluminum specic blades)

3 4
R5-CX PARTS LIST
Item Description Cervélo Part No.
BB Blanking Plug GR-BB-140
Rear Derailleur
Hanger w/Fixing Nut DRH-WMN112
Shimano Direct Mount
RDH w/Fixing Nut DRH-SDM
Threaded Fork Insert
w/Fixing Screw QRI-THD
Seat Tube Blanking
Plug(1x & Wireless) GR-576
Brake Hose Guide CBG-DBH
Front Derailleur
Mount w/ Fixing
Screws
FDM-590
Front Derailleur
Mount Blanking Plate
(1x)
FDM-CVR
Dropout Blanking Plug
Wireless GR-DRPOUT-CLOSED
Item Description Cervélo Part No.
Dropout Electric Wire
Guide GR-DROPOUT-GUIDE
SP24 Seatpost w/
Head 0mm SP-SP24-ZERO
SP24 Seatpost w/
Head 15mm SP-SP24-15MM
SP18 Seatpost w/
Head 25mm SP-SP18-25MM
Seatpost Battery
Mount MT-BINT-SP2
D-Shaped Seatpost
Clamp & Secondary
Seatpost Clamp Kit
SPC-256
Cervélo Front Aero
Thru-Axle QRA-AERO2-F
Cervélo Rear Aero
Thru-Axle QRA-AERO2-R
Cervélo Aero Thru-
Axle Removable
Handle
QRA-AERO2-HNDL
Chainstay Protector PRO-CS-508
Item Description Cervélo Part No.
Rubber Plug for ST32
Top Cap PL -338
ST31/32 Top Cap STC-305
ST32 Bearing Cap Kit
(7mm & 22mm) BC-ST32
ST31/32 HS Spacer Kit SK-032
Split Ring 312 SR-312
D-Shaped
Compression Plug FKI-CL005-517A
ST31/32 Accessory
Mount Assembly MT-LM-F-004
Accessory Mount
Kit- Rear MT-LM-R-003
R5-CX FRAME FEATURES
Cervélo D-shaped
seatpost
Maximum chainring
size:
1x = 52t
2x = 52t/36t
Brake hoses and
electric shift wires
are internally routed
through the frame/
fork and out of the
stem.
The R5-CX frame is
designed solely
for electric shift
groups.
77mm T47 BBRight
threaded bottom
bracket
T47 BBRight:
Torque to 50Nm
maximum. 12-notch
46mm OD T47 BB tool
required.
142mm

5 6
Seatpost
Battery Mount
MT-BINT-SP2
ST31 Computer/Accessory
Mount Assembly
MT-LM-F-004
Accessory Mount
Kit (Rear)
MT-LM-R-003
See pages 12 and 19 for mounting instructions.
BB Blanking
Plug
GR-BB-140
The R5-CX frame is engineered to provide seamless integration of
electronic shifting systems, regardless of brand. In order to do so, you
may require the parts shown below:
Rear Derailleur
Wire Guide
(Electric)
GR-DRPOUT-GUIDE
Rear Derailleur
Blanking Plug
(Wireless)
GR-DRPOUT-CLOSED
Brake Hose
Guide x2
CBG-DBH
Seat Tube Blanking
Plug(6mm)
(1x & Wireless)
GR-576
Di2 Wire Guide
Shimano p/n EW-GM300-S
SMALL PARTS
Threaded Fork
Insert w/Fixing
Screw
QRI-THD
Front Derailleur
Mount w/Fixing
Screws
FDM-590
Front Derailleur
Mount Blanking
Plate
FDM-CVR
Direct Mount
Derailleur
Hanger
DRH-SDM
Derailleur
Hanger
DRH-WMN112
Derailleur
Hanger Fixing
Nut
Secondary
Seatpost Clamp &
Seatpost Clamp
SPC-256

7 8
ST31 STEM
Cervélo ST31 Stem
(Carbon)
Rubber Plug for
ST32 Top Cap
PL-338
Preload Fixing
Screw
M6 x 25
ST32 Stem Top
Cap STC-305
Use only original Cervélo components & included
hardware specied for handlebar, stem, and fork
assembly. Failure to use the specied parts and to
follow these instructions may result in a loss of
control while riding and serious injury.
Do not
ip ST31
stem for
additional
stack.
Ensure upper
and lower
faceplate
gaps are
even.
To mount a cycling
computer or accessory
such as a light or
camera, use Accessory
Mount Kit-Front MT-
LM-F-004 See page
10 for assembly
instructions.
Tighten fork
steerer xing
screws to 5Nm.
M5 x 16mm
ST31 stem
faceplate xing
screw (Actual
size)
Tighten stem
faceplate xing
screws to 6Nm.
1. Coat the surfaces where the stem body and faceplate contact the
handlebar clamping area (as shown right) with carbon assembly
paste.
2. Center the handlebar against the stem body and secure it in place
by mounting the faceplate and tightening all faceplate xing screws
nger-tight.
3. Tighten the faceplate xing screws evenly following a star pattern
until the upper and lower stem to faceplate gaps are even.
4. Perform nal tightening in a star pattern using a torque wrench to
6Nm maximum.
80mm ST-C031-80
90mm ST-C031-90
100mm ST-C031-100
110mm ST-C031-110
120mm ST-C031-120
130mm ST-C031-130
16mm

910
FRAME & COMPONENT PREPARATION
Hold the frame using a secured seatpost only.
Clamping the top tube can damage the frame
and void your warranty.
If trimming of the seatpost is required, nal length should
allow for a minimum of 70mm of seatpost remaining in
the frame, or the minimum insertion dimension indicated
on the seatpost, whichever is greater. Failure to meet
this requirement, may result in damage to the frame not
covered by warranty policy, or serious injury to rider.
1. Slide Secondary Seatpost Clamp onto
seatpost.
2. Apply carbon paste to the frame and
seatpost shaft to be inserted into the frame.
3. Insert the seatpost into the frame. Adjust
height and torque the Seatpost Clamp to
6Nm maximum.
4. Torque the Secondary Seatpost Clamp to
3Nm maximum.
HB13 HANDLEBAR
Cervélo HB13
Handlebar
80mm
380mm
400mm
420mm
440mm
128mm
38cm HB-HB13-38
40cm HB-HB13-40
42cm HB-HB13-42
44cm HB-HB13-44
Use only original Cervélo components & included
hardware specied for handlebar, stem, and fork
assembly. Failure to use the specied parts and to
follow these instructions may result in a loss of
control while riding and serious injury.
Brake hoses and Di2
E-Wires run in the
channels on underside
of handlebar.
Secondary
Seatpost
Clamp
(SPC-256)
Seatpost
Clamp
(SPC-256)

Lightly grease Rear Derailleur Hanger
Fixing Nut and install either Rear Derailleur
Hanger (DRH-WMN112) or Direct Mount Rear
Derailleur Hanger (DRH-SDM) nger tight.
Final tightening will be performed after rear
wheel installation.
Do not nal tighten rear derailleur
hanger assembly without rear wheel
installed. Doing so may result in a
misaligned derailleur and poor shifting.
DRH-SDMDRH-WMN112
1. Lightly grease supplied M4 xing screw.
Install the Threaded Fork Insert (QRI-THD)
and xing screw, tightening only lightly.
2. Without wheel in place, install the axle
and tighten until the ange meets the fork
dropout face, but does not compress the
fork blades.
3. Tighten the xing screw to 3Nm.
4. Remove the axle and install wheel.
Reinstall axle and tighten to 12-15Nm.
5. Remove axle and wheel, and re-torque the
xing screw to 3Nm.
11 12
FRAME & COMPONENT PREPARATION
For use without
accessory, clip
may be hidden,
by reversing the
crossbar.
Accessory
Mount Kit-Rear
Crossbar
To install Accessory Mount -
Rear (MT-LM-R-003), replace
the rear upper crossbar of
the seatpost with the kit
version. Tighten to maximum
8Nm. See also page 19.
Clean the chainstay using isopropyl alcohol. Install the
Chainstay Protector (PRO-CS-508) by removing adhesive
backing, and xing the guard to the frame. The bottom
rearward edge should be approximately 50mm forward
from the back of the rear dropout.
Install Front
Derailleur Mount
(FDM-590), and
ensure xing
screws are
torqued to 3Nm.
For 1x systems
replace with the
Front Derailleur
Mount Blanking
Plate (FDM-CVR).
Torque
to 2.5Nm. Torque to 2Nm.
Torque to 1Nm.
To install ST31 Accessory
Mount (MT-LM-F-004),
angle mount into ST31
stem faceplate and torque
to 2Nm.
or

13 14
Max.
4mm
1mm
1st Mark
2nd Mark /
Final Cut
D-Shaped
Compression
Plug adds 1mm
to height of
cut fork
ST32 Stem
Top Cap Plug
PL-338
ST32 Stem
Top Cap
STC-305
5mm Stem
Spacer
Bearing
Top Cap Kit
22mm & 7mm
(BC-ST32) or
Split Ring
(SR-312)
2.5mm Stem
Spacer
Stem
Spacer Kit
(SK-032)
Preload
Fixing
Screw
M6 x 25
Upper Bearing
1-1/4" 45ºx 45º
Lower Bearing
1-1/2" 36ºx 45º
Your Cervélo frame
& fork have been
designed to work
together. Do not
substitute a dierent
size fork without rst
consulting Cervélo
Customer Service to
conrm compatibility
with your frame.
Two-piece
Stem Spacers
allow for
installation
or removal
without
re-cabling.
FORK PREPARATION & INSTALLATION
Improper cutting of the steerer tube could
cause a failure that may result in severe injury
or death.
Avoid breathing the dust created during cutting
carbon composite materials.
1. Apply grease to the bearing pockets and install
the upper and lower headset bearings into the
frame.
2. Fit the fork provided with your frame into the
head tube with the complete headset, required
spacers, and the stem.
3. Apply the minimum pressure needed to
ensure the assembly is fully seated. Mark the
steerer tube at the top of the stem.
4. Remove fork and clearly mark the fork steerer
tube at a point 4mm below the rst mark. Take
care to verify that this measurement is correct
as this denes the cut line for the steerer tube.
5. To trim fork steerer, use only a saw suitable for
cutting carbon, and a cutting guide.
6. Insert D-Shaped Compression Plug and tighten
to hold in place. Do not apply nal torque until
after the stem is installed.
7. Place Lower Bearing over the fork steerer and
insert into the frame from the bottom of the
head tube.
8. Lightly coat the fork steerer at the stem
clamping interface with carbon assembly
compound. Install over the steerer in order:
Upper Bearing, Split Ring, Bearing Top Cap,
Stem Spacers, and Stem. Do not install the
Stem Top Cap.
9. Tighten the Compression Plug to 8Nm using a
torque wrench.
10. Install the Stem Top Cap and Preload Fixing
Screw into the stem. Tighten the Preload
bolt only enough to remove all play from the
headset, and ensure the bearings rotate freely
(typically 1 to 2 Nm)
11. Tighten the stem to fork xing bolts to 5Nm
maximum.
Do not torque Compression Plug past
the recommended 8Nm maximum. If the
Compression Plug requires tightening past
8Nm, please contact Cervélo Customer
Service.
The component parts of the compression
plug are side-specic. Re-assembling
parts incorrectly may result in loss of
preload in the system. Refer to the
images shown for correct assembly.
Do not exceed 5mm total
spacers above the stem.
Do not exceed
52mm maximum
total spacer height,
including the
Bearing Top Cap.
Install D-Shaped
Compression Plug
(FKI-CL005-517A)
in fork steerer and
lightly tighten. Apply
rated torque of 8Nm
following stem and
spacer installation.
Left
Wedge
Right
Wedge
Rear Wedge

15 16
BRAKE HOSE ROUTING
These routing illustrations are intended as a supplement to
the manufacturer’s installation instructions only. For both
hydraulic and mechanical disc brakes, please refer to the
component manufacturer’s service center or website for
further information.
Chainstay
height: 25mm
Route rear
brake hose
around drive
side of fork
inside head
tube.
Route hydraulic brake hose through the frame and fork with
the Disc Hose Guide (CBG-DBH). Install and adjust calipers as
per manufacturer’s instructions.
Brake hose pass-
through in fork
steerer does not
require use of a
Disc Hose Guide.
Brake
Route rear
brake hose from
chainstay through
the down tube and
up through the
head tube.
Route brake hose
through Split
Ring, Bearing Top
Cap and out ST31
stem.
Split Ring
(SR-312)
It is recommended to include
20mm-25mm of additional brake
hose length to the amount required
for the nal customer t. Doing
so will permit sucient length for
disassembly and service purposes.
1. Measure customer t
2. Add additional 20-25mm of
spacers
3. Cut and install brake hoses
4. Remove extra spacers
5. Complete assembly

17 18
ELECTRIC WIRE ROUTING & INSTALLATION
Brake
With all wires inside, cap the Bottom
Bracket Cable Port with the BB
Blanking Plug (GR-BB-140).
Install the Rear Derailleur Wire Guide
(GR-DRPOUT-GUIDE).
For wireless shifting
systems install the
Rear Derailleur
Blanking Plug
(GR-DRPOUT-CLOSED).
These routing illustrations are intended as a
supplement to the manufacturer’s installation
instructions only. Please refer to the component
manufacturer’s service center or website for
further information.
800mm
E-Wire
1200mm
E-Wire
E-Wire(SD300)

The R5-CX uses a proprietary
shaped seatpost. Do not
attempt to use any seatpost
other than the model provided
by Cervélo.
19 20
Press the Di2 battery
into the Seatpost
Internal Battery Mount
(MT-BINT-SP2) and
attach the E-wires
according to manufacturer
instructions.
Insert the assembled
battery and holder into
the seatpost.
DI2 BATTERY INSTALLATION
The battery for your Shimano Di2 system mounts inside the
seat tube using the Seatpost Internal Battery Mount (MT-BINT-SP2).
As this is an enclosed location, it is important to test the system
prior to nal installation.
SEATPOST ASSEMBLY & INSTALLATION
1. Apply a light coat of carbon assembly
compound to the upper face of the
Seatpost, making sure to cover area
around the adjustment slots.
2. Locate saddle rail between Crossbars
and Saddle Clamp Base, and place on
Seatpost.
3. With alignment washers installed,
attach assembly to Seatpost, by
tightening lightly greased xing
screws, alternating between the two
sides each 1/2 turn. Once saddle is
adjusted, tighten xing screws to a
maximum of 8Nm.
SP-SP24-15MM
Crossbars
Saddle
Clamp
Base
Alignment
Washers &
Fixing Screws
SP-SP24-ZERO
Accessory Mount
Kit-Rear
MT-LM-R-003
Replace rear upper
clamp with Accessory
Mount kit version.
Tighten to maximum
8Nm.
Torque xing
screws to 2.5Nm.

21 22
AERO THRU-AXLE INSTALLATION
To ensure rider safety, it is critical to install the Cervélo
Aero Thru-Axle correctly. Failure to do so may result in an
accident with potential for serious injury to the rider.
Tighten rear axle
to 12-15Nm.
Tighten
front axle
to 12-15Nm.
or
6mm Allen key /
torque wrench
Perform nal tightening on
Rear Derailleur Hanger Nut
using a 17mm wrench. Torque
to 12-15Nm. This action is
unique to initial assembly,and
should not require additional
adjustment.
Adjust brakes as per manufacturer’s
instructions.
To secure wheels, install the greased axle, through the drop
out and the wheel hub, aligning the threaded end of the axle
with the threaded insert. Once aligned and engaged, thread
the axle (clock-wise) into the threaded component of the insert
until the axle is secured tightly.
Cervélo Aero
Thru-Axle with
Removable Handle
(QRA-AERO2-F,
QRA-AERO2-R &
QRA-AERO2-HNDL)

23 24
TIRE/RIM CLEARANCE
Your Cervélo bicycle complies with the ISO 4210-2:4.10.2 standard for tire clearance. In order to comply with these safety standards and
maintain your Limited Lifetime Warranty, a minimum of 4mm of clearance must remain between the tire and any frame element. Due to
the growing complexity of tire and rim interfaces, Cervélo recommends identifying the available space before choosing a tire.
1. Measure the space between the chainstays at
the bottom bracket junction.
2. Measure the space between the seatstays at the
top of the tire.
3. Using the smallest of those two numbers,
subtract 8mm (4mm per side) to determine the
remaining space.
4. With the tire installed and fully inated on your
wheel, measure the widest of the rim or tire
width to ensure that it ts.
Tire/Rim
Dimension
Frame
Clearance
Contact between the tire or rim and the
frame or fork may result in a loss of control
while riding and potentially serious injury.
Failure to follow these guidelines may result
in damage to the frame not covered by
Cervélo Limited Lifetime Warranty.
INTENDED USE OF THE R5-CX BICYCLE
No one type of bicycle is suited for all purposes. Your retailer can help you
pick the “right tool for the job” and help you understand its limitations.
There are many types of bicycles and many variations within each type.
There are many types of mountain, road, racing, hybrid, touring, cyclocross
and tandem bicycles. There are also bicycles that mix features. For
example, there are road/racing bikes with triple cranks. These bikes have
the low gearing of a touring bike, the quick handling of a racing bike, but
are not well suited for carrying heavy loads on a tour. For that purpose you
want a touring bike.
Within each of type of bicycle, one can optimize for certain purposes. Visit
your bicycle shop and nd someone with expertise in the area that interests
you. Do your own homework. Seemingly small changes such as the choice
of tires can improve or diminish the performance of a bicycle for a certain
purpose.
NOTE: Usage conditions are generalized and evolving. Consult
your retailer or Cervélo Customer Service about how you intend
to use your bike.
NOTE: Cervélo bicycles are tested to a maximum combined
bicycle/rider/luggage weight of 100kg. Components have
different weight limits, and if replaced can alter the maximum
safe bike weight limit. Consult your retailer or Cervélo
Customer Service about what components are appropriate for
your bicycle.
Cyclocross Riding - Condition 2
Bikes designed for riding Condition 1, plus unpaved and gravel roads and
trails with moderate grades. Contact with irregular terrain and loss of tire
contact with the ground may occur. Drops should be no more than 6” (15cm).
Intended For cyclocross riding, training and racing. Cyclocross involves
riding on a variety of terrain and surfaces including dirt or mud surfaces.
Cyclocross bikes also work well for all weather rough road riding and
commuting.
Not Intended For o road or mountain bike use, or jumping. Cyclocross
riders and racers dismount before reaching an obstacle, carry their bike
over the obstacle, and then remount. Cyclocross bikes are not intended for
mountain bike use. The relatively large road bike size wheels are faster than
smaller mountain bike wheels, but not as strong.
Understand your bike and its intended use. Choosing the wrong bicycle
for your purpose can be hazardous. Using your bike the wrong way is
dangerous.
Maximum Weight Limit - Cervélo R5-CX
Rider 194 lbs 88 kg
Gear* 11 lbs 5 kg
Total 220.5 lbs 100 kg
*Seat bag / water bottles / bento bag / handlebar bottle / storage mounts only

25 26
R5-CX TORQUE SPECIFICATIONS
Component Torque(Nm) Notes
Frame
Bottom bracket - threaded - T47 50 Nm
Clean & grease the BB shell threads inside the frame. Grease the outside threads of the BB cups. Thread both sides of the
BB cups into the frame - noting that the right side cup is reverse threaded. Using a torque wrench and the appropriate
adaptor, tighten both sides to the specied torque until they are ush with the frame.
Rear derailleur xing nut (disc brake) 12 to 15 Nm Finger tight prior to rear wheel installation, nal torque to approximate torque using open ended wrench.
Removable FDM / FDM blanking plate 3 Nm Lightly grease the xing screws.
Water bottle cage xing screws 2 to 3 Nm Lightly grease the xing screws.
Correct tightening torque of threaded fasteners is
crucial to your safety. Always tighten fasteners to
the correct torque. In case of a conict between
the instructions in this manual and those
provided by a component manufacturer, consult
with your retailer or with Cervélo Customer
Service for clarication. Fasteners that are too
tight can stretch and deform. Fasteners that are
too loose can move and fatigue. Either mistake
can lead to a sudden failure of the fastener.
Use only a correctly calibrated torque wrench to
tighten critical fasteners on your bike. Carefully
follow the torque wrench manufacturer’s
instructions on how to set and use the tool for
accurate results. Ensure you read all relevant
documentation and have the correct tools prior to
attempting any adjustments yourself.
It is recommended that you permit your retailer to
perform the following adjustments, as they have
the proper tools and experience to ensure it is
done correctly.
Prior to assembling and tightening any bolts,
all threads must be generously greased with a
quality, non-lithium type grease unless the bolt
is pre-coated with Loctite® thread locker. All bolts
should have either grease or Loctite - but never
both. Torque wrenches with scale appropriate
for the particular torque setting are strongly
recommended for tightening all threaded
fasteners.
Cervélo strongly recommends the use of carbon
assembly compound/friction paste for all areas
of clamping to carbon ber, such as the seatpost
to frame, the stem to fork, and the handlebar to
stem joints. Benets to using this paste include
reduced corrosion potential, and a decrease in
required clamping force needed to support a
given load. The paste should be evenly spread on
the carbon surface under the clamped area, and
the applicable bolt tightened as per the following
recommendations.
WARNING: In case of a disagreement
or a conict between the following
list and any supplier literature on
recommended torque values for original
equipment components, please contact
Cervélo Customer Support for review and
clarication of the required torque prior
to installation.
Component Torque(Nm) Notes
Fork
Fork steerer compression plug 8 Nm Lightly grease the xing screw and tighten to the recommended torque.
Fork dropout insert 3 Nm
Lightly grease screw, install nger tight on NDS fork dropout. Install the axle (no wheel), and tighten until the axle ange
meets the fork dropout - then tighten the xing screw to recommended torque. Remove the axle, install the axle & wheel
to recommended torque, then remove. Re-torque the xing screw to recommended torque
Stem
Stem to fork steerer tube 5 Nm Lightly coat the fork steerer at the stem clamping interface with carbon assembly compound. Tighten the stem xing
screws evenly & alternately to the recommended torque using a torque wrench.
Stem to carbon handlebar 6 Nm Coat the stem/handlebar clamping surfaces with carbon assembly compound. Tighten the faceplate xing screws in a start
pattern to recommended maximum torque using a torque wrench.
Handlebar
Brake/shift levers (to handlebar) 6 to 8 Nm Refer to manufacturer’s instructions for installation of brake/shift levers.
Accessory mount - front 2 Nm Lightly grease the xing screws.
Seatpost Clamp (frame to seatpost)
D-shape collar 6 Nm Use carbon assembly compound between the seatpost and the frame.
Secondary D-shape collar 3 Nm
Saddle (seatpost head bolts) – SP24 D-shape carbon
2 bolt head 8 to 9 Nm Ensure Loctite 242 is used on both bolts (1 is pre-applied).
Wheels
Cervélo aero thru-axle / Cervélo aero thru-
axle with removable handle 12 to 15 Nm Requires the use of a 6mm allen key type wrench or Removable handle.
Other
Pedals 30 to 35 Nm Refer to manufacturer's instructions.
R5-CX TORQUE SPECIFICATIONS

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R5-CX (FM153)
Bike Name R5-CX
Model Year 2023
Serial Number Code SN153
Frame Code FM153
Fork Code FK153
Brake Mount Type Flat Mount Disc
Chainstay Height (Flat Mount) 25MM
Frame Sizes 51/54/56/58
Wheel Size 700C
BB Type T47 BBRight (Threaded)
Headset Type Integrated 1-1/4" x 1-1/2"
R5-CX (FM153)
Upper Headset Bearing Dimensions 1-1/4", 34x46.8x7, 45°x45°
Lower Headset Bearing Dimensions 1-1/2", 40x51.8x7.5, 36°x45°
Seatpost SP-SP24-ZERO, SP-SP24-15MM
Seatpost Clamp SPC-256
Rear Derailleur Hanger DRH-WMN112
Rear Derailleur Hanger (Shimano DM) DRH-SDM
Front Derailleur Hanger FDM-590
Front Thru-Axle Dimensions 12 x 100MM
Rear Thru-Axle Dimensions 12 x 142MM
Fork Dropout Insert QRI-THD
Maximum Tire Width (Actual) 43mm with 5mm clearance*
R5-CX FRAME DETAILS
Tire measurements shall be taken at the
widest point of the tire when it is installed
on the rim and inated. 4mm of distance is
required between the tire and any frame or
fork element.
NOTE: For UCI sanctioned cyclocross races,
the maximum tire width is 33mm.
*
R5-CX FRAME GEOMETRY
R5-CX (FM153) 51cm 54cm 56cm 58cm
Reach 371mm 380mm 389mm 398mm
Stack 520mm 540mm 560mm 580mm
Bottom Bracket
Drop 63mm 63mm 63mm 63mm
Chainstay Length 425mm 425mm 425mm 425mm
Seat Tube Angle 74.5˚ 74˚ 73.5˚ 73˚
Head Tube Angle 71.5˚ 71.5˚ 71.5˚ 72˚
Fork Length
(Axle to Crown) 401mm 401mm 401mm 401mm
Fork Oset 51mm 51mm 51mm 48mm
Front Center 581mm 597mm 612mm 620mm
Head Tube Length 97mm 11 8 mm 139mm 157mm
Wheelbase 998mm 1014mm 1029mm 1037mm
Standover Height 758mm 778mm 797mm 817mm
Seat Tube Length 495mm 517mm 538mm 560mm
Top Tube Length 517mm 536mm 556mm 574mm

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CERVÉLO CUSTOMER SUPPORT
Contacting Customer Support
Visit www.cervelo.com/contact-us to submit a
question to Cervélo.
Product Registration
Visit www.cervelo.com/support to register your
Cervélo bicycle through your MyCervélo account.
Manuals
Visit www.cervelo.com/product-manuals for
additional information on Cervélo products.
Warranty
Visit www.cervelo.com/warranty for information
on Cervélo’s warranty policy.
NOTES

www.cervelo.com
CER-CXA-V1 2022-05-25
R5-CX RETAILER ASSEMBLY MANUAL