GPX MOTO GPX 450RFSE User guide
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ADVICE
Motorcycles are very dangerous. Check your motorcycle carefully before every ride to ensure
everything is working correctly. Do not ride if you are under the influence. If you cannot ride a
motorcycles , do not ride a motorcycle. Its your life and wellbeing so be careful with it.
Most of off-road motorcycle fatalities are caused by head injuries. Without helmets, the chances of
serious injury or death caused by head injuries are much higher. Always wear an approved
motorcycle helmet and protective apparel such as goggles, gloves , knee and elbow protectors and
boots while riding, which will save your life at the critical moment.
This motorcycle was designed for off road racing , therefore there is no capacity to carry a
passenger .Please therefore do not use this motorcycle to carry any passengers. Ignoring this or order
rules could lead to serious injury or a fatality.
Always go riding with another person so you can help each other.
Do not use non-original parts to modify this motorcycle. If you need to replace any parts, please use
spare parts and accessory products that are approved and / or recommended by GPX and have them
installed by an authorized GPX workshop. GPX accepts no liability for any personal modification,
other products and any resulting damage or loss.
Our GPX series products are specially designed for off-road racing and riding.
Please take care of your vehicle and avoid any problem caused by improper use.
Please check your motorcycle carefully before riding and do the maintenance accordingly after use.
If you crash the motorcycle, check the condition of the motorcycle before you resume your journey.
Ignoring this advice could easily lead to an accident and endanger your own safety as well as others ,
as you may be riding a broken or faulting motorcycle .
When using this motorcycle, the temperature of the engine and exhaust pipe is very high, so it needs
to a period to cool down after parking. During this period, do not touch the engine or exhaust pipe as
you will scold yourself.
Do not wear shorts while riding, otherwise leg injuries may happen.
APPEARANCE
GPX 450R FSE COMPONENTS AND POSITIONS
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No.
Name
No.
Name
1
Front mudguard
11
Front brake hose
2
Clutch lever
12
Engine sump shield
3
Coolant overflow tank
13
Electric starter motor
4
Petrol cap and tank vent hose
14
Front sprocket
5
Seat
15
Side stand
6
Rear mudguard
16
Air box cover
7
Rear light and no plate mount
17
Drive chain
8
Front brake cover
18
Rear sprocket
9
Front suspension compression adjustment
10
Front brake caliper
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No.
Name
No.
Name
19
Rear brake disc and caliper
30
Rear suspension rebound adjustment
20
Exhaust silencer
31
Oil level window
21
Rear suspension compression adj
32
Rear brake lever
22
Radiator cap
33
Oil filter access
23
Front suspension rebound adjustment
34
Oil strainer access
24
Throttle
35
Sump shield
25
Front brake lever
36
Front fork protector
26
Front LED light
37
Front suspension compression adjuster
27
Rear wheel spindle
38
Front wheel spindle
28
Chain adjustment
39
Front exhaust
29
Rear suspension height adjustment
Tips and Tricks and keep your GPX 450R FSE FSE in tip top condition.
Following these tips will help to serve you with a reliable and long lasting motorcycle
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1. Read this handbook !
2. So you don’t forget and over run ,keep your own dated and mileage recorded list of when you carried
out this maintenance. Showing this record and keeping oil and parts receipts to a buyer in the future
will help to prove you have looked after your GPX.
3. Clean the air filter and lubricate this with air filter oil after each 4 hours of riding or each competition.
4. Check and adjust your engine oil level before each ride.
5. Use good quality fully synthetic 10W/40 motorcycle oil (full specification beneath)
6. Change your engine oil , paper filter and clean the oil strainers every 10 hours of riding or after each
competition.
7. Check / adjust and lubricate your chain before each and every ride.
8. Wash your bike propertly and carefully. Avoid the air box, carburetor ,fuel tank vent hose, bearings
and electrical connector and components.
9. Dry your motorcycle after you wash. Use an air line , paper or cotton towels or a leaf blower if you
have one. Start at the top and down downwards towards the floor, drying the wheels last.
10. If you are not confident or don’t know how to maintain a motorcycle speak to your dealer, or seasoned
motorcycle mechanics , not your neighbour .
11. Lightweight dirtbikes are not like cars.They need adjusting , tweaking and maintaining regularly. Its
just part of the fun. Speak to your dealer if you want reliable advice.
12. Check you brakes , throttle and clutch before each ride. Be safe.
13. If your unsure about anything …STOP and get good advice.
VIN CODE
Vin code of the GPX 450R FSE ,is located on the head
stock.
CHASSIS NUMBER
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PARAMETER
DIMENSIONS AND SPECIFICATION - GPX 450R FSE
L*W*H（mm）
2180×820×1254
Wheelbase（mm）
1480mm
Net weight（kg）
110
Tire size
F: 80/100-21；R: 110/100-18. Rear will accept a 140 80/90 18” Enduro or
MX tyre
Seat height（mm）
939mm. This can be reduced by 55mm to 884mm by using the 2nd lower
shock bolt , at no expense.
Min ground clearance
（mm）
330mm
Tank volume（L）
9.4 litres
Engine Parameters
Engine type
Single-cylinder, water-cooled, four-stroke,
four-valve overhead cam, balance shaft
structure
Clutch type
Manual wet multi-piece
Cylinder
diameter×stroke
94.5×64 mm
Displacement
449cc
Compression Ratio
10.7:1
Oil type /capacity
Fully synthetic 10W/40
Especially suitable for wet clutches
High wear resistance
API SN Plus (Euro 5 compatible)
JASO MA2
Oil capacity
1700ml after filter change
1600ml without filter change
ALWAYS check oil level is to the correct dipstick height on a level surface
AND that it appears at the correct level in the engine window.
Shift type
Constant mesh two-stage
transmission six-speed transmission
International profile 1-N-2-3-4-5-6. Primary reduction ratio: 2.91
Transmission ratio of each gear:first gear: 2.58
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Second gear: 1.8 Third gear: 1.33 Fourth gear:0.98 Fifth gear: 0.88 6th-
Starting
Electric 12v Electric start with starter.CDI.
Fuel control system
Electronic fuel injection
Battery
Stock 12v battery for high performance electric starting and reliable
electronics . Stock battery code HJTX5L-FPZ
Chain
520. Front is 13 teeth and rear 52.
Frame/Shock/Brake/Wheel system Parameters
Frame type
Central double cradle type high-strength steel tube frame, GPX
International patent design
Front shock
SZC Front suspension. 310mm travel. Comprising of quality high
performance Telescopic, closed cartridge type units with adjustable
compression and rebound. Seals , dust seal and range of springs available
(after market), L=950mm.
Rear shock
Compression recovery dual adjustable nitrogen airbag rear shock,
L=480mm, 300mm travel , CRF general configuration.Quality high
performance unit with spring preload, adjustable compression as well as
rebound damping
Swing arm
High strength forged aluminium alloy structure
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Handlebar
Competitive high-strength aluminium alloy fat bar (imported),，material
7075 Φ28.6mm, with GPX special ultra-soft off-road grip
F/R rims
F 1.60×21, R 2.15×18, 7050 high strength aluminium rim ，
forged CNC wheel hub
F brake system
Powerful Hydraulic alloy twin piston caliper with 260mm disc
R brake system
Powerful Hydraulic alloy twin piston caliper with 240mm disc
Others
Air filter type
Sponge filter core filter type
Fuel type
92# and above grade gasoline.
Motorcyclists
1 person（rider）
Maximum load weight
120kg
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CONTROL
CLUTCH
The clutch is controlled by the clutch lever, which is
fitted on the left side of the handlebar.
By adjusting 2 the screws indicated you can change the
biting point of the clutch and the distance between the
clutch lever and handlebar to your preference.
FRONT DISC BRAKE
The front disc brake is controlled by the hand brake
lever, which is fitted on the right side of the handlebar.
By adjusting the small bolt on the lever you can change
the biting point of the lever and the distance of the
brake lever to your preference.
The front wheel adopts the floating - caliper disc brake,
which is installed under the left front fork and fixed by
two bolts.
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