PDF User Manual

This manual contains important safety, performance and maintenance 

information. Read the manual and all warnings before taking your first 

ride on your new 3G Bikes and make sure to keep the manual handy for 

future reference. 

Unsafe or improper use of any 3G Bikes by failing to read and comply 

with all safety, performance, maintenance requirements and warnings 

could result in serious injury or death. Assembly of your 3G Bikes by any 

party other than an authorized 3G Bikes dealer voids our manufactur-

ers warranty. It is strongly recommended to have all post-sale assembly 

and service work on your bicycle performed by a properly trained and 

equipped dealer. 

When inspecting your bicycle, be certain to tighten all nuts and bolts 

properly. Under-tightening can result in loosening, parts loss and compo-

nent damage. Over-tightened nuts and bolts can break. Certain parts have 

metric hardware -- always use the correct tools. If you have any questions 

or do not understand something, take responsibility for your safety and 

consult with your dealer or the bicycle’s manufacturer.

This manual details general assembly and is not an in depth bicycle parts 

or function guide. 

Your bicycle’s serial number is stamped on the front of the head tube on 

top of the fork. Please record the serial number on your manual and make 

sure to register your bicycle online at: 3gbikes.com/bikeregistration/ 

Bicycles not registered on our database are not covered by our warranty. 

More on our warranty and serial in pages 13 &14. 

*We also recommend saving purchase invoices and receipts to better 

track your transactions.

MODEL NAME:

SERIAL NUMBER:

COLOR:

DATE OF PURCHASE:

PLACE OF PURCHASE:

Owner’s Manual for 3G Bikes

REGISTRATION

Content

Pg.1

Pg.2

Pg.3

Pg.4

Pg.5

Pg.6

Pg.7

Pg.8

Pg.9

Pg.10

Pg.11

Pg.12

Pg.13

Pg.14

Pg.15

Pg.16

Introduction / Registration

Table of Contents

Identifying the Product

Identifying the Product Cont.

Assembly Overview

Frame Parts

Bicycle Sizing

Seat and Handlebar 

Adjusting Seat

Adjusting Handlebar

Handlebar Components 

Installing Pedals

Bottom Bracket 

Three Piece Crank

Limited Warranty

Serial Number 

At 3G Bikes we have over 20 different product models ranging from beach cruis-

ers to specialty bicycles like tandems and tricycles. It is important to correctly 

identify which model you have in order to correctly assemble and maintain your 

bike. Some of the most obvious differences will be the frame material, crank set, 

wheel and stem style. Below is a quick model chart.

Identifying the Product Model

Steel Beach Cruisers

Alloy Beach Cruisers

Model

Frame

Wheel / Tire

Speeds

Crank Set

Axel - Boy's

Steel

20"x1.75" / 20"x3.45" 

Twenty-G

1spd

1pc

Axel BBW - 

Boy's

Steel

20"x80mm / 20"x3.45" 

Twenty-G

1spd

3pc

Gigi - Girl's

Steel

20"x1.75" / 20"x3.45" 

Twenty-G

1spd

1pc

Gigi DLX- Girl's

Steel

20"x57mm / 20"x3.45" 

Twenty-G

1spd

1pc

Puck

Steel

24"x1.75" / 24"x3.45" 

Hoggy-G

1 spd

1pc

Puck DLX

Steel

24"x57mm / 24"x3.45" 

Hoggy-G

1spd

1pc

Roxie

Steel

24"x1.75" / 24"x3.45" 

Hoggy-G

1spd

1pc

Isla Vista

Steel

26"x1.75" / 26"x2.125"

Single Speed

1pc

Venice

Steel 

26"x1.75" / 26"x2.125" 

Slicky-G

1, 3 & 7 spd

1pc (1, 3 spd)

3pc (7 spd)

Imperial BBW

Steel

26"x80mm / 26"x3.45" 

Boa-G

1 spd

3pc

Newport

Aluminum

26"x1.75" / 26"x3.45" 

Boa-G

1, 3 & 7 spd

3pc 

Newport DLX

(Men's Only)

 Aluminum 

26"x57mm / 26"x3.45" 

Boa-G"

1 & 3 spd

3pc

Newport BBW

Aluminum

26"x80mm / 26"x3.45" 

Boa-G

1 & 8 spd 

3pc

NOTE - Single speed beach cruisers feature coaster brake hubs. 

NOTE - DLX models feature 57mm wide rims, BBW models 

feature 80mm wide rims.

Our multiple speed models might feature "V" brakes on the front and rear wheel, 

derailleurs or disc brakes. We strongly recommend all these components be 

checked and adjustment by a professional bicycle mechanic to ensure correct 

installation.

Identifying the Product Model

City Comfort Models:

Specialty Models:

Rental Models:

Model

Frame

Wheel / Tire

Speeds

Crank Set

Chicago

(Men's Model)

Steel

700c / 29"x45" 

1 & 7 spd

1pc (1 spd)

3pc (7 spd)

G'Bonita

(Ladies' Model)

Steel 

700c / 29"x45" 

1 & 7 spd

1pc (1 spd)

3pc (7 spd)

Broadway

(Men's Model)

Aluminum

700c / 29"x45" 

1 & 7 spd

3pc 

G'Linda

(Ladies' Model)

Aluminum 

700c / 29"x45" 

1 & 7 spd

3pc

Model

Frame

Wheel / Tire

Speeds

Crank Set

Double Headder

(Tandem)

Aluminum

26"x1.75" / 26"x2.125" 

Slicky-G

1 spd

3 pc

Asbury

(Tricycle)

Aluminum 

front: 24"1.75" / Hoggy-G

Rear: 20"x3.45" / Twenty-G

1 spd

3 pc

Asbury DLX

(Tricycle)

Aluminum

front: 24"57mm / Hoggy-G

Rear: 20"x57mm / Twenty-G

1 spd

3pc 

Model

Frame

Wheel / Tire

Speeds

Crank Set

EZ Over

Aluminum

26"x1.75" / 26"x2.125" 

Slicky-G

1 spd

1 pc

EZ Over Plus

Aluminum 

26"x1.75" / 26"x3.45" 

Boa-G

1 spd

3 pc

NOTE - All models that feature a 1 piece crank set require ped-

als with 1/2" thread sizing. Models that feature 3 piece crank 

require 9/16" thread size. 

Tools required to assemble and adjust your 3G Bikes bicycle are not 

included . 

Tools you might need:

     1. Rubber Mallet

     2. Allen Key Set (3, 6 in particular)

     3. Metric Wrench Set (14, 15, 17 in particular)

     4. Standard Wrench Set (3/4" in particular)

     5. Adjustable Wrench

     6. Standard Screwdriver

     7. WD40 (or similar lubricating product)

Right out of the box our bicycles come partly assembled although not 

completely adjusted. Use this list as an assembly guide and go through 

each part making sure that everything is secured correctly and tightened. 

     1. Seatpost, Seatpost Clamp and Saddle. 

     2. Crank Set and Pedals. 

     3. Install fork. 

     4. Assemble and Install Rear Wheel. 

     5. Install Front Wheel

     5. Install Chain

     6. Install Handlebars.

     7. Install Shifter, Levers and Grips.

     8. Install cables (and breaks if external)

     9. Install Pedals.

     10. Posture Setup.

     11. Safety Check.

CAUTION - Remember that you should always thread nuts, 

bolts and pedals on by hand at first to ensure they do not cross 

thread

Assembly Overview

This diagram shows many of the major features on several of our cruiser style 

bicycles. Model pictured is a men's bicycle frame in single speed, ladies' models 

feature step-through frames which are distinguishable by a low top tube. Multiple 

speed models will vary slightly to accomodate grip shifters, brakes and some-

times a derailleur.

Frame Parts

Rear Sprocket

Saddle

Front Sprocket or

Chainring

Front Hub

Stem

Headset

Seat Post

Seat Post 

Clamp

Wheel Rim

The Frame

Spokes

Top Tube

Head Tube

Seat Tube

Seat Stay

Chain Stay

Bottom Bracket

Rear Dropout

Down Tube

Fork

Fork Dropout

In order to benefit of the comfort focused design of 3G Bikes you must 

make sure that the bicycle you purchased provides the correct fit for you. 

Firstly you should be able to stand over the bicycle frame with both feet 

flat on the ground (see figure A).

Some of our bicycle models feature step-through frames which have a 

very low top tube. 

Although not all of our bicycle models are available in different frame 

sizes, we do have a range of wheel sizes from 29", 26" and 24" for adults 

in order to meet different height requirements. Our city bikes come with 

29" wheels and are available in a small and large frame size in all men's 

models. 

Bicycle Sizing

Figure A

The correct riding position for our bicycles will place your arms extended 

in front of your body and your legs comfortably stretched out when the 

pedal is at its furthest position (see figure B). If your feet can't reach the 

pedals when they are in the furthest position we suggest lowering the seat 

post a notch. 

When setting the forward position of the handlebars, set them so that 

you can hold the handle-grips when your elbows are only slightly bent. 

You should have a strong grip and be able to easily turn the wheel in a 90º 

angle side to side. 

Seat and Handlebar

Figure B

NOTE - Seat posts have a minumum insertion mark that must 

be acknowledged, failure to do so can lead to the post bending 

or breaking. 

WARNING - Do not place the seat tube all the way in so that 

the saddle touches the frame, doing so can result in the saddle 

being pushed off the seat tube and falling off.

There are two type of seat post clamps we use in our bicycle models. 

Some are secured by allen bolts (see figure C) while others feature a quick 

release lever (see figure D). 

Below you can see how to secure a quick release seat post clamp and 

adjust your bicycle seat. 

     1. First untighten the seat post clamp by flipping it outward and rotat-

ing it counterclockwise. Adjust the height of your seat. Noting the mini-

mum insertion mark on your seat post. 

     2. Once the seat is at desired height, rotate the seat post clamp lever 

clockwise to tighten.

     3. To secure the seat post flip the lever inwards making sure it is 

aligned to the clamp. 

Adjusting Seat

Step 1

Minumum 

Insertion Mark

Step 2

Step 3

Figure C

Figure D

NOTE - Seat post clamp allen bolt usually require a 5mm hex 

key. It is important to make sure you are using the right sized 

tools in order to correctly adjust any part.

All 3G models will feature one of two available styles of headsets and stem 

attachments, they will either be a ball bearing headset with a 1" HL quill 

stem for a threaded fork (see figure E) or a sealed headset with a thread-

less 120mm Promax stem (see figure F). 

Make sure that all components are installed in order presented. Some 

bicycle models require more or less spacers. If you have trouble adjusting 

any part of your fork and headset please contact your nearest 3G Bikes 

bicycle dealer with any questions.  

Adjusting Handlebar

Figure F

Figure E

- 1

1) Locknut

2) Tabbed Locking 

Washer

3) Threaded Bearing 

Race

4) Bearings (facing 

down)

5) Cup

6) Cup

7) Bearings (facing 

up)

8) Bottom Race

1) Aluminum 

Spacers

2) Bearing Cap

3) Plastic Bearing 

Race

4) Bearings (facing 

down)

5) Cup

6) Cup

7) Bearings (facing 

up)

8) Bottom Race

- 2

2

- 3

- 4
- 5

Frame 

Headtube

Frame 

Headtube

Starnut fitted

inside fork

- 6

- 7

- 8

- 2
- 3
- 4

- 5

- 6
- 7

- 8

- 1

Shifter Cable

Brake Cable 

Adjustment nut

Brake Lever

Adjusting Pin

Brake Lever

Allen Bolt

Tightens Lever

Shifter Cable 

Adjustment nut

Shifter

Grip Shifter 

Mechanism

Locking Cap

Figure G

Grip

The components on a 3G Bikes handlebar will vary depending on the 

speed and model of the bicycle. Single speed models do not feature brake 

levers or shifter parts. Not all multiple speed shifters look the same, but 

attachment on to handlebars will be similar. Below (see figure G) is a 

diagram showing the general assembly of handlebar components as seen 

on a three speed model. 

Break and shifter cable routing might be internal or external depending 

on the model of bicycle. Please double check bicycle frame before consid-

ering converting a single speed model into a multiple speed. 

Handlebar Components

NOTE - Specialty tools might be required for adjusting or in-

stalling shifter and break components. We always recommend 

having a licensed professional instal, adjust and repair any of 

the components on 3G Bicycles.

Figure H

Before you put your pedals on the crank arms, be sure to take note which 

pedal is which. Each pedal is indicated by a letter stamped into the end of 

the pedal axle (see figure H). 

When you have the correct pedal for the side you're on, thread the pedal 

on using just your hands at first. It should thread in fairly easily, oth-

er-wise you may be cross threading it which will strip the threads off the 

axle, ruining it. Using a wrench, tighten the pedal on fully. 

Installing Pedals

Left pedal tightens counter clockwise. 

Right pedal tightens clockwise. 

Lock Nut

Bearings

Cup

Cup

Bearings

Chainring

Left

Crank Arm

Threads

Right 

Crank Arm

Figure I

Bicycle 

Frame

Spacer

Threaded 

Bearing Race

Threaded 

Bearing Race

Tabbed

Locking Washer

Although the bottom bracket comes pre-installed on all our bicycles it is 

good to know how the general assembly of these components is in case 

of encountering problems (see figure I). Below is a diagram showcasing a 

one piece crank set, the parts involved will be slightly different on a three 

piece set.

Installing Bottom Bracket

1. Feed left crank arm into hole in center of chainring.

2. Follow this with the plastic spacer and then the threaded race. 

3. Grease the race and bearings, and feed the bearing onto the crank with 

balls facing in

4. Grease cups. Insert left crank arm through right side of bike. 

5. Grease next set of bearings and feed them to the left arm facing inward.

6. Feed the second threaded race (flat side facing out).

7. Finish with the washer and a lock nut. Make sure whole assembly is 

tight but able to spin freely.

Bottom Bracket

NOTE - The cups are the first parts to be installed into the 

frame. The threaded races thread onto the threads indicated 

on the crank itself. All pieces fit on via left crank arm (thinner 

arm)

Some of our higher end bicycle models come with a three piece crank 

with a sealed bottom bracket (see figure J). It is called a three piece be-

cause it can be taken apart into three main components. 

Bolt

Bolt

Figure J

Please note that the threaded parts might require parts to be fed in differ-

ent directions. Forcing parts onto the threads can result in damaging the 

parts.

Installing Three Piece Crank

1. Left side of the BB thread should be removable. Insert BB through right 

side and attach. Then insert loose thread through left and tighten.

2. Attach crank arms to BB and bolt in place. 

Three Piece Crank

NOTE - 3G Bikes always recommends having our products 

assembled, tuned and repaired by our authorized dealers. Im-

proper assembly and damage will result in a voided warranty.

Threads

Right 

Crank Arm

Left

Crank Arm

3G Bikes warrants the replacement of the components of 3G bicycles due 

to defects in material and/or workmanship. The following conditions and 

limitations apply:

1. Frames carry a limited lifetime replacement warranty for the original owner.

2. The components (not to include tires, tubes and cables) are warranted for one 

year.

3. Charges such as labor and transportation are not included.

This warranty is offered to the original retail purchase ONLY. Both proof of pur-

chase from an authorized 3G Bikes dealer and warranty registration processed 

through the 3GBikes.com website are required to validate protection under this 

warranty.

Normal wear, accident, abuse, neglect, improper assembly, improper fit, or 

improper maintenance by anyone or the use of parts and devices not consistent 

with the use originally intended for the bicycle as sold are not covered under this 

limited warranty. The bending of frames, forks, handlebars, seat-post, fenders, 

chain-guards and rims is excluded from warranty. Bending is a sign of abuse or 

punishment inconsistent with bike's intended use, and therefore not covered 

under this limited warranty.

In order to validate your warranty it is necessary to have your bicycle assembled 

by an 3G Bikes dealer. Claims should be processed through an authorized dealer. 

This warranty is limited to replacing the defective part without charge and the 

company shall in no event be responsible for consequential or special damag-

es. In the event that the bicycle has been used in stunt riding, ramp jumping, 

acrobatics or similar activities; this warranty is void. Likewise, the bicycle is not 

designed to be used with a motor.

This warranty is expressly in lieu of any other warranties. Any implied warran-

ty, including any warranty of merchantability of fitness, shall be limited to the 

duration of the express warranty set forth herein. Warranty is void in its entirety 

by modifications to fork, frame or components. 

In the event that a warranty claim for a defective part is approved, the part in 

question must be returned to our west coast headquarters in CA in order to 

receive any replacement part, 3G Bikes is not responsible for shipping charges. 

Visit: 3gbikes.com/bikeregistration/ to register your bicycle.

Limited Warranty

Our bicycles come with 14 gauge spokes in either steel or stainless steel. A 

couple models will feature 12 gauge heavy duty spokes. This difference in 

gauge allows for the weight limit on our bicycles to vary a little bit. 

14 gauge spokes can handle rider weights up to:    250lbs / 113kg

12 gauge spokes can handle rider weights up to:    350lbs / 158kg

For more info on your product, please check the websites below:

www.3gbikes.com/contactus

www.3gbikes.com/support

www.3gbikes.com/warrantyclaim

www.3gbikes.com/findadealer

www.3gbikes.com/bikeregistration

Weight Limits

Customer Resources

You may find your 3G Bikes bicycle serial number on the head tube of the 

frame towards the bottom. Please make sure to record this number for 

reference and register it online. 

Bicycle Serial Number

WWW.3GBIKES.COM

EMAIL: SALES@3GBIKES.COM