• Motocross CRZ ERZ - 300cc PRO S - 18"/21"
  • Motocross CRZ ERZ - 300cc PRO S - 18"/21"
  • Motocross CRZ ERZ - 300cc PRO S - 18"/21"
  • Motocross CRZ ERZ - 300cc PRO S - 18"/21"
  • Motocross CRZ ERZ - 300cc PRO S - 18"/21"
  • Motocross CRZ ERZ - 300cc PRO S - 18"/21"
See spare parts and microfiches

Motocross CRZ ERZ - 300cc PRO S - 18"/21"

Réf : ERZ300S-OR-26 See the description
2,299.00€ 700.00€
1,599.00€
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Pré-commande - 15/06/2026

Must-haves

Pourquoi vous allez l'adorer !  

  • ZONGSHEN 300cc 4-stroke vertical engine, 22hp
  • + 1.5hp additional thanks to the POWERBOMB stainless steel exhaust system
  • 5-speed gearbox - Reinforced oil-bath clutch
  • Seat height 92cm
  • Competition frame - Double tubular steel reinforcement
  • 18" + 21" aluminum wheels + front/rear Gripsters
  • KKE 830mm hydraulic fork
  • KKE 450mm linkage shock absorber
  • CRZ, a French brand created in 2006
  • Recreational/Sporting Leisure – Safe
  • Not approved for road use. Motorized vehicle intended exclusively for recreational use.

CRZ ERZ 300S PRO 4-Stroke 18"/21" Motocross Bike


The new ERZ 300S PRO air-cooled motocross bike, boasting 22 hp + 1.5 hp with its POWERBOMB engine (for a total of 23.5 hp), will captivate you with its large 18"/21" black aluminum wheels equipped with front and rear wheel gripsters.

Not street legal. This motorized vehicle is intended exclusively for recreational and sporting use.

Its seat height is 92 cm, and it features an 840 mm inverted hydraulic fork with 51/54 mm travel and 180 mm of travel, as well as a 450 mm shock absorber with 90 mm of travel.

It also features a conveniently located lever choke on the handlebars. The brake and clutch levers are adjustable, and it comes with Pro Taper-style grips.

ZONGSHEN 300cc Vertical 4-Stroke Engine 22hp + 1.5hp (23.5hp): Exclusive to CRZ, the new ZONGSHEN 300cc vertical 4-stroke engine delivers 22hp with air cooling. It features a new engine block and new, more efficient and reliable clutch covers. Its full stainless steel exhaust with a POWERBOMB boost of nearly 1.5hp brings the engine to 23.5hp. Designed for experienced riders, it's not for everyone. Mini MX has created an ideal motorcycle for motocross and enduro riding.

The 300cc air-cooled engine develops 16kW at 8500 rpm and 22Nm of torque (Reminder: 1kW = approximately 1.36hp, so 16kW x 1.36hp = 22hp).

Chassis: Its KKE 830mm adjustable hydraulic fork, adjustable to 51/53mm, allows you to adjust compression and rebound damping according to your riding style, preferences, and weight.

Stainless Steel Exhaust + PowerBomb (+1.5hp): Exceptional sound thanks to its full stainless steel PowerBomb exhaust system is a clear differentiator. This configuration enhances engine performance and adds approximately 1.5hp.

Dual-Piston Hydraulic Brakes: The 230mm disc, gripped by a dual-piston caliper, ensures powerful braking.

5-Speed ​​Oil-Bathed Gearbox: Its gearbox features 5 speeds (1N2345) with a multi-plate oil-bath design, ensuring fast and precise shifting.

520 Chain Drive: Equipped with a thick 520 chain for a factory-configured enduro setup, it features a 6-point sprocket.

KEE 840mm Hydraulic Inverted Fork: Often compared to the competitor FASTACE, KKE offers a high-performance hydraulic fork with 180mm of travel, mounted on a reinforced 51/54mm (large diameter) aluminum triple clamp. This stock configuration will give you a real edge over the competition!

KEE 450mm Link-Mount Shock: The CRZ ERZ PRO's link-mount shock represents the most advanced design on the market. Both precise and reliable, it has often been imitated, but no replica matches its quality and precision. The 450mm KKE shock absorber ensures perfect weight distribution with the front end.

High-strength steel competition frame with double central tube: Balanced and reliable to handle the power of the ZONGSHEN 300cc engine and its 22hp +1.5hp with the PowerBomb exhaust. CRZ equips you with the best on the market; this competition frame guarantees unparalleled reliability! Have no doubt about the durability of the ERZ PRO series chassis.

Seat height 92cm - 18" rear and 21" front wheels: This motocross seat height is ideal for riders between 1.70m and taller.

The original front and rear wheel gripsters improve traction, stability, and vehicle control on rough terrain by reinforcing the tire's attachment to the rim.

Advantages of the linkage mounting:

A linkage shock absorber increases the progression between wheel movement and shock absorber travel, improving ride comfort and suspension absorption. This explains the shock absorber's longer length compared to a conventional shock absorber.

We recommend the IPONE or Putoline maintenance kits:

PUTOLINE

- 1x PUTOLINE 4T 10W40 Semi-Synthetic DX4 Engine Oil 1L

- 1x PUTOLINE 500ml Carburetor Cleaner Spray

- 1x PUTOLINE 500ml Drytec Chain Lubricant Spray

IPONE

- 1x IPONE 10.4 4T 10W40 Engine Oil 1L

- 1x IPONE X-TREM 500ml Off-Road Chain Grease


All spare parts available for the 300cc S can be found via the Microfiche (product information sheet) or in the category specifically designed for the 300cc, as well as in the general categories on the minimx website.

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.

Delivery by SCHENKER: All our motocross bikes are shipped from our warehouses located in Fréjus, France (83). They are delivered...

Delivery by SCHENKER:

All our motocross bikes are shipped from our warehouses located in Fréjus, France (83). They are delivered 85% pre-assembled on a pallet by our specialized carrier, SCHENKER. The carrier will contact you by email or SMS to easily arrange a delivery date. You will then receive your tracking number to follow your delivery. SCHENKER is the leading French and European specialist delivery company with over 600 branches in Europe, including 165 in France. They guarantee an average delivery time of 48 to 72 hours.

Assembling your bike:

You will only need to finish assembling a few easy parts (such as the handlebars, front wheel, and rear shock absorber).

Once assembly is complete, if the factory settings are not perfectly suited to your riding conditions, we invite you to visit our YouTube channel (Mini MX) where you will find both mechanical tutorials and bike assembly videos.

We recommend that you read the owner's manual and check the general tightening of your motorcycle (spokes, axle, general screws), chain tension, tire pressure, and the routing of the brake/clutch cables.

We recommend that you perform your first oil change using IPONE or Putoline oils, as recommended and approved by the manufacturer. Using other oils not approved by the manufacturer could damage the engine or gearbox.

Our after-sales service, based in Fréjus (83), France, is available at 0972390537 (free call) to assist you if you have any questions.

Motocross assembly video:

Motorization

Kick Start Size 16mm (Big Size)
Engine Type ZONGSHEN 300cc Single Cylinder, 4 Stroke, 2 Valves, Air Cooled
Engine Capacity 300cc
Cooling Type Air Cooling
Carburator Carburetor PE 28
Clutch Manuel 5 Vitesses (1N2345) Multiplaque à bain d'huile
Start Up Kick and electric starter
Exaust INOX Racing Exhaust with POWERBOMB (ERZ PRO 250/300)
Fuel Unleaded 95 / 98
Clutch Type Manual
Ignition Digital CDI
Motorization Thermal (gasoline)
Speed KM/H 110 and more km/h
Number of CVs 23,5cv
Compression Ratio 9.29:1
Maximum torque 22Nm/6500 trs/min
Maximum Power 16Kw/8500 trs/min
4 Stroke / 2 Stroke 4 Stroke
Displacement (ml) 271.3

Cycle Parts

Frame High Tensile Steel Frame with Central Tube
Plastic Kit new
Oil Engine Capacity 900 ml
Fuel Tank Capacity 7,5 Liters
Fuel Tank Type KTM
Swing Arm High Strength Steel Swing Arm 560mm
Cycle Part CRZ ERZ PRO 250/300cc

Dimensions/Size

Weight 112 Kg
Seat Height 92 cm
Select by age 18 year and more, 17 year, 16 year
Allowed weight 120Kg
Age group Adults
Select your size CM 1m65 and more (For Adults)
Packing Size 1460x460x830mm

Suspension

Front Fork KKE 830mm Adjustable Inverted Hydraulic Fork, 180mm Travel (51/53mm)
Rear Shock KKE 450mm shock absorber on connecting rod, travel 90mm
Clamp Aluminum - Ø51/53mm
Handle Bar 28,6mm
Adjustable Compression/Rebound No

Braking system

Brake System Front and Rear Single Piston Rear Brake Kit (CRZ ERZ PRO 250/300cc)
Double Piston Front Brake Kit (CRZ ERZ PRO 250/300cc)
Disc Diameter 190mm
Front Disc Diameter 230mm
Center distance Fixation Disc 58mm

Tire

Wheel Axle 17mm
Rear and Front Wheel Front Aluminum Rims 1.60 x 21" (15mm Axle)
2.15 x 18" Aluminum Rear Rim (15mm Axle)
Wheel Size 18"/21"
Rear tire 90/100-18"
Front tire 70/100-21"
Rims 6063 Aluminium, Gravity Cast Hub, Avant: 1.6x21", Arriere: 2.15x18"

Chain and Drive

Transmission 5 Speeds (1N2345)
Chain Size 520
Sprocket Size 20mm
Chain length (links) 124 Links
Interaxis Fixation Crown 58mm
Number of teeth Sprocket 13 teeth
Wheelbase 1320mm

Electrical System

Battery Ampere/hour 12V5AH

Handlebars/Controls

HandleBar Tapered Aluminum 6061
Clutch Lever Clutch lever with starter (CRZ ERZ PRO)

Others

Color Orange, Red
Warranty 1 month Engine (Running-in period) 3 months cycle part
Brand CRZ
Vintage 2026
Seat KTM-L
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.
Shipping origin France
Delivery Label Motocross 2
Gripster factory-installed Arriere: oui, Avant: oui (Améliore la traction, la stabilité)
Valve clearance Admission: 0.07 / Échappement: 0.09
Front wheel bearing 6202RS
Rear wheel bearing 6203RS
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ERZ300S-OR-26
2026-06-15

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