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Motocross CRZ ERZ - 450cc SX - 18"/21""

Réf : ERZ450SX See the description
4,599.00€ 600.00€
3,999.00€
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Pack Maintenance ERZ450

In Stock - Delivery 3/4 Days

Order it before 14:00 of today and receive it between 6/8/26 and 6/9/26 with Schenker

More than 20 parts in stock

Must-haves

Pourquoi vous allez l'adorer !  

  • ZONGSHEN 450cc 4-Valve Liquid-Cooled Engine: 48hp
  • Stainless Steel POWERBOMB Exhaust System and Cartridge
  • KEIHIN PE38 Carburetor
  • 6-Speed ​​Gearbox - Reinforced Wet Clutch
  • Easy Electric Start + Kick Start
  • Frame: Full steel cradle + cast steel, offering robustness and lightness
  • 930mm Inverted Hydraulic Fork, 53/58.5mm adjustable compression/rebound: Suitable for motocross use
  • 480mm Adjustable Shock Absorber
  • 99cm Seat Height: Ideal for riders 1.80m and taller
  • Motocross Wheelbase: 1450mm
  • 18"/21" CNC Wheels + Gripster (for increased stability and traction)
  • 53/58.5mm CNC Triple Clamp
  • 52-Tooth CNC Sprocket
  • Taller and longer than the 450R Ideal for use on motocross tracks
  • CRZ French brand created in 2006
  • Recreational/Sporting Leisure – Safe

CRZ ERZ 450cc SX Motocross Bike - 18"/21"


Following the success of its enduro model, CRZ presents the ERZ 450cc SX, a motocross bike more focused on track performance. Designed for thrill-seekers, this motorcycle combines power, handling, and advanced technology to offer an unparalleled riding experience. Not street legal. Motorized vehicle intended exclusively for recreational and sporting use.

Engine Specifications:

Engine: NC450cc, 4-stroke, 4-valve
Cooling: Liquid
Starting: Kick and electric
Bore: 94 x 64 mm
Compression: 10.7:1
Maximum Power: 35 kW at 9000 rpm
Maximum Torque: 48 N·m at 7000 rpm
Gear: 6-speed
Ignition: CDI
Carburetor: PE38
Transmission: 520 chain
Sprocket: 13 teeth
Sprocket: CNC 52 teeth

Chassis and Suspension:

Frame: Full steel cradle + cast steel, offering strength and lightness
Front Forks: Adjustable from 53 to 58.5 mm, 930 mm length
Rear Shock: Adjustable, 480 mm length
Discs Brakes: 240 mm front and rear for effective braking
Handlebars: 28.6 mm alloy for optimal ergonomics
Treble crown: Forged alloy for increased strength
Dimensions and capacities:

Rims:
Front: 1.60-21"
Rear: 2.15-18"
Tires:
Front: 80/100-21"
Rear: 100/90-18"
Wheel Gripsters are fitted as standard on the front and rear wheels, improving traction, stability, and vehicle control on rough terrain by reinforcing the tire's attachment to the rim.

Maximum permissible weight: 180 kg
Fuel tank capacity: 6.5 liters
Seat height: 990 mm
Wheelbase: 1450 mm
Ground clearance: 290 mm
Dimensions: 2170 x 820 x 1270 mm
Package dimensions: 1640 x 580 x 850 mm
The CRZ ERZ 450cc SX is the ideal motocross bike for enthusiasts seeking performance, comfort, and reliability on the track. With its powerful engine and numerous technical features, it will allow you to experience intense and unforgettable moments. Get ready to dominate the terrain with this machine designed for demanding riders!

Our motorcycles, quads, pocket bikes, etc., are not approved for use on public roads. Their use is strictly limited to...

Our motorcycles, quads, pocket bikes, etc., are not approved for use on public roads. Their use is strictly limited to closed, private tracks that comply with the provisions of Article R 331-21 of the French Sports Code.

Our vehicles (motorcycles, quads, buggies, etc.) intended for children should not be considered mere toys, but motorized machines belonging to the realm of motorsports, which involve inherent risks.

Minors under the age of 14 are not authorized to purchase, rent, or use non-approved vehicles, such as mini-motorcycles, children's quads, unapproved quads, motocross bikes, pocket bikes, pocket cross bikes, pit bikes, or dirt bikes. Their use is strictly limited to activities organized by approved sports associations, such as the FFM (French Motorcycling Federation) or UFOLEP (French Union of Secular Sports and Cultural Activities). It is important to note that the maximum speed of these vehicles on public roads is 24 km/h, which prohibits their use on public roads. Furthermore, minors under 16 years of age must be constantly supervised by an adult when using these machines.

To ensure your safety, it is essential to wear appropriate protective equipment, including an approved safety helmet, motocross-type safety glasses, gloves, elbow pads, knee pads, and a chest protector. It is also recommended to wear a long-sleeved top, long trousers, and high-top shoes that cover at least the ankle, ensuring that the laces are securely tied and away from the wheels, engine, and drive system.

You must register your machine with the Ministry of the Interior within 15 days of the purchase date. This process can be completed online at the following address: https://www.service-public.fr/particuliers/vosdroits/R20458. After submitting the declaration, you will receive an identification number to be engraved on the chassis and displayed on a visible plate. Please note that this plate can be removed during sporting activities.

We also encourage you to consult the charter outlining the rules to be followed for the use of your vehicle, available here: https://www.legifrance.gouv.fr/loda/id/JORFTEXT000020910287/, or to refer to the user manual, which you can download.

Motorization

Kick Start Size 16mm (Big Size)
Engine Type Single Cylinder NC 450cc ZONGSHEN, 4 Valve, Liquide Cooling
Engine Capacity 450cc
Cooling Type Liquid Cooling
Bore 94mm x 64mm
Carburator PE38
Clutch Any Gear Start (Can be start with any gear up)
Start Up Kick and electric starter
Exaust 4Perf INOX Exhaust with Powerbomb type CRF450
Fuel Unleaded 95 / 98
Clutch Type Manual
Ignition Digital CDI
Motorization Thermal (gasoline)
Speed KM/H 110 and more km/h
Number of CVs 48hp
Brand Engine ZONGSHEN
Maximum torque 48N.m/7000rpm
Maximum Power 35kw/9000rpm - 48cv
Horizontal/Vertical Motor Vertical
4 Stroke / 2 Stroke 4 Stroke
Displacement (ml) 448.6 ml
Spark JH9RC

Cycle Parts

Frame High Strength Single Beam Steel Frame
Plastic Kit CRF450
Oil Engine Capacity 1700ml
Fuel Tank Capacity 6,5 Liters
Fuel Tank CRF450
Swing Arm CNC Aluminum Swing Arm

Dimensions/Size

Lenght 2170mm
Width 830mm
Weight 123Kg
Seat Height 99 cm
Select by age 16 year, 17 year, 18 year and more
Allowed weight 120Kg
Ground clearance 290mm
Age group Adults
Select your size CM 185cm and more, 1m65 and more (For Adults)
Weight 118Kg
Packing Size 1715x445x860mm
Total Height 1270mm

Suspension

Front Fork 930mm adjustable inverted hydraulic fork
Rear Shock 480mm Gas Shock Absorber - Adjustable - Suspension Rod Mounting
Clamp Aluminum - Ø54/60mm
Handle Bar 28,6mm
Fork crown size 53/58mm
Adjustable Compression/Rebound Yes

Braking system

Brake System Front and Rear Front Hydraulic Double Piston Disc 240mm / Rear Single Piston 240mm (450 SX)
Disc Diameter new
Front Disc Diameter new
Center distance Fixation Disc 6-point disc

Tire

Wheel Size 18"/21"
Rear tire 100/90-18"
Front tire 80/100-21"
Rims CNC 7050 Aluminum, CNC Hub Front: 1.60x21 Rear: 2.15x18
Tire Type Cross/Off-Road

Chain and Drive

Transmission 6 Speed (1N23456)
Chain Size 520
Number of teeth Sprocket 13 teeth
Number of teeth Crown 52 teeth
Wheelbase 1450mm
Transmission Chain chain 520 13t / 52 teeth

Electrical System

Battery Li-Ion lithium battery HJTX4L-FPZ-B 12v36Wh

Fuel system

Carburetor size 38mm

Handlebars/Controls

HandleBar Tapered Aluminum 7075

Others

Color Red
Warranty 1 month Engine (Running-in period) 3 months cycle part
Brand CRZ
Vintage 2026
Seat CRF450
Type of bike Motocross
Type of product Motocross
Type of use Non homologué pour la voie publique. Véhicule motorisé destiné exclusivement à un usage récréatif et sportif.
Quality Competition
Performance Racing
Shipping origin France
Delivery Label Motocross 3
Gripster factory-installed Arriere: oui, Avant: oui (Améliore la traction, la stabilité)
Valve clearance Admission: 0.07 / Échappement: 0.09
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Specific References

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