R3 & R2 Manual - Version 2 - 2018-05-07 - Cervélo

Nov 4, 2026

Assembly guide for Cervélo R Series R3 and R2 classic road bikes, covering required frame and fork preparation steps, cable routing, and installation of key components. The manual explains how to fit headset bearings and the fork, trim and prepare the steerer tube, mix and apply two-part epoxy with proper insert seating, and enforce safety and fitment constraints. It also details small-parts requirements, mechanical integration guidance, torque and alignment checks, and routing considerations for both mechanical and electric systems.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages16

Reading Time40 min

AccessFree to download

Introduction

Frame Features

Fork Preparation

Small Parts

Frame Preparation

Mechanical Cable Routing

Electric Cable Routing

Seatpost Assembly & Installation

Frame Protection Installation

Tire Clearance

R3 & R2 MANUAL TABLE OF CONTENTS Introduction ............................................. 1 Frame Features ........................................... 2 Fork Preparation ......................................... 3 Small Parts .............................................. 5 Frame Preparation ........................................ 6 Mechanical Cable Routing ................................. 7 Electric Cable Routing ................................... 9 Seatpost Assembly & Installation ........................ 11 Frame Protection Installation ........................... 13 Tire Clearance .......................................... 14 INTRODUCTION Welcome to the Cervélo family, and congratulations on your decision to ride an R Series bicycle. The ultra-lightweight engineering of your Cervélo R Series classic road bike will help you attack any climb, and enjoy speed and control on descents.The understated design allows performance to shine through with a settled ride that lets you respond to the road. As with the ownership of any high-performance vehicle, it is important to familiarize yourself with its features and service requirements. Please read this manual before assembly or use. This document has been prepared to guide you through the assembly of the unique features of the R Series, but is intended only as a supplement to the assembly instructions offered by your component manufacturer. 1 Version 2 - 2018-05-07 - CER-R23-V2 frame. Down tube internal cable ports FRAME FEATURES A guide toyour Cervélo R3 and R2 Front derailleur wire exit hole, electric and mechanical Rear dropout cable exit Bottom bracket cable port FORK PREPARATION A .Stem Cap + 5mm bolt B .Headset Spacers C .Bearing Cap D .Compression Ring E .Bearings F .Fork Insert G .Two-Part Epoxy H .Mixing Stick I . Isopropyl Alcohol Wipe J .Sandpaper (120 Grit) A 1. Apply grease to the bearing seats, and Install the upper & lower headset bearings into the head tube. 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 first mark.Take care to verify that this measurement is correct as this defines the cut line for the steerer tube. Your Cervélo frame & fork have been designed to work together. Do not substitute a different size fork without first consulting Cervélo Customer Service to confirm compatibility with your frame. Avoid breathing the dust created during cutting carbon composite materials. A 2 .5mm spacer under the Stem Cap is advised 1st Mark 2nd Mark / Final Cut Max . 4mm 5. To trim fork steerer, use only a saw suitable for cutting carbon, and a cutting guide. 6. Carefully sand a bevel to the inside of the cut end of the steerer tube to fit the insert. 7. Dry fit insert to check that it is flush with the cut end of the steerer tube. 8. Use isopropyl alcohol to clean the inside of the steerer tube and the outside of the insert. 9. Fully mix the two-part epoxy and apply to the outer surface of the insert with the wooden mixing stick. 10. Slide the insert into the steerer while rotating it slowly until the flared end sits flush with the top of the steerer. 11.Wipe away any excess glue from the outside surface of the steerer tube with the isopropyl alcohol wipe. 12. Set the fork aside and allow it to sit undisturbed for the full curing period. Do not attempt to fit the fork into a bike prior to the completion of the full curing period. Improper cutting of the steerer tube could cause a failure that results in severe injury or death. Do not exceed 50 mm maximum total spacer height, including the bearing cap. Insert should be flush with cut end of the fork steerer tube SMALL

FAQs

What should be done before assembling or using the Cervélo R3/R2 frame and fork?

Read the manual before assembly or use, and treat it as a supplement to the component manufacturer’s assembly instructions. Familiarize yourself with the bike’s features and service requirements.

How is the fork steerer tube trimmed and prepared?

Use a saw suitable for cutting carbon and a cutting guide, then sand a bevel to fit the insert. Clean the steerer tube and insert, fully mix the two-part epoxy, and install the insert so it sits flush with the cut end.

What mechanical cable routing precautions are required?

Install derailleur cables after the brake hose is installed. Ensure cable housing is seated securely, route cables to the bottom bracket without twists, and keep gear cables properly guided out of the bottom bracket cable port.

Nov 4, 2026

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