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

Réf : ERZ300S-GR-26 See the description
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Additional Product

Pré-commande - 15/06/2026

Pourquoi vous allez l'adorer !  

  • Vertical 4T 300cc ZONGSHEN 22hp Engine
  • + 1.5hp additional thanks to the INOX POWERBOMB line
  • 5-Speed Gearbox - Reinforced oil bath clutch
  • Seat Height 92cm
  • Competition Frame - Double tubular steel reinforcement
  • Aluminum Rims 18" + 21" + Gripster front/rear
  • KKE Hydraulic Fork 830mm
  • KKE 450mm Linkage Shock Absorber
  • CRZ French Brand created in 2006
  • Recreational/Sport Leisure – Secured
  • Not approved for public roads. Motorized vehicle intended exclusively for recreational use.

Motocross CRZ ERZ 300S PRO 4T 18"/21"

 

The new ERZ 300S PRO Air cooling with 22hp + 1.5hp with its POWERBOMB, that is 23.5hp of the 2024 CRZ edition will charm you with its large black aluminum wheels 18"/21" inches equipped with Gripster wheels at the front and rear. Not approved for public roads. Motorized vehicle intended exclusively for recreational and sporting use.


Motocross CRZ ERZ PRO 300cc 18"/21"

PRO VERSION

The ERZ Motocross range from the CRZ brand offers several different configurations:

Features: ERZ PRO 300cc ERZ 300L (liquid) ERZ 300L Injection
Rims 6063 Aluminum 18"/21" with front/rear gripster 7116 Aluminum 18"/21" with front/rear gripster 7116 Aluminum 18"/21" with front/rear gripster
Frame Double cradle perimeter steel Double cradle perimeter steel Double cradle perimeter steel
Engine

300cc ZONGSHEN

5 Speeds

HP: 22hp +1.5hp = 22.5hp

300cc ZONGSHEN Liquid 4 Valves

5 Speeds

HP: 27.5hp +1.5hp = 29hp

300cc ZONGSHEN Liquid 4 Valves

Electronic Injection

5 Speeds

HP: 27.2hp +1.5hp = 29hp

Cooling Air Liquid Liquid
Maximum Torque 22Nm/6500 rpm 23N.m/7000 rpm 23.5/7000 N.m/r/min
Maximum Power 16Kw/8500 rpm 20kw/8500 rpm 19.5/9000 kw/r/min
Exhaust

Full INOX with powerbomb 4PERF Cartridge

+1.5hp

Full INOX with powerbomb 4PERF Cartridge

+1.5hp

Full INOX with powerbomb 4PERF Cartridge

+1.5hp

Suspensions

KKE Fork 840mm

Aluminum triple clamp: Ø51/54mm

KKE linkage shock absorber: 450mm

KKE Fork 910mm Adjustable Compression/Rebound

Aluminum triple clamp - Ø53/58.5mm

KKE Adjustable Shock 480mm Compression/Rebound with remote reservoir

KKE Fork 910mm Adjustable Compression/Rebound

Aluminum triple clamp - Ø53/58.5mm

KKE Adjustable Shock 480mm Compression/Rebound with remote reservoir

Seat Height 92cm 94cm 94cm
Chain Pitch 520 520 520
Wheelbase 1320mm 1480mm 1480mm

Its seat height is 92cm with a 840mm hydraulic fork in 51/54mm inverted with 180 mm travel, its shock absorber on 450mm linkage with 90mm travel.

It also features a starter "lever" directly on the handlebar and therefore easily usable. The brake and clutch levers are adjustable and it comes with Pro Taper style grips.

Vertical 4-Stroke 300cc ZONGSHEN 22hp + 1.5hp for a total of 23.5hp: CRZ Exclusive, the new ZONGSHEN 4-stroke 300cc vertical engine of 22hp air-cooled is equipped with the new engine block and new clutch covers that are more efficient and more reliable, its exhaust full stainless steel with POWERBOMB boost of nearly 1.5hp bringing the engine to 23.5hp. Intended for experienced riders, it is not for just anyone. Mini MX presents an ideal bike for cross use and enduro rides.

The 300cc air engine develops 16KW at 8500 rpm for 22Nm (Reminder: 1KW = approximately 1.36hp so 16KW x 1.36hp = 22hp)

Its Chassis: Its Adjustable Hydraulic Fork KKE 830mm with 51/53mm adjustment will allow you to adjust compression and rebound according to your use, preferences, and weight.

Stainless Steel Exhaust + PowerBomb (+1.5hp): An exceptional sound thanks to its full INOX POWERBOMB line, it is clearly a differentiating point. This configuration helps engine performance and will offer about 1.5hp more to the engine

Double Piston Hydraulic Braking: The 230mm disc clamped by a double piston guaranteeing efficient braking.

5-Speed Oil Bath Gearbox: Its gearbox is equipped with 5 speeds 1N2345 in a multi-plate oil bath, a feature that ensures fast and precise transmission.

520 Chain Transmission: Equipped with a thick 520 chain for a transmission originally configured for enduro, it is equipped with a 6-point mounting sprocket.

KEE 840mm Hydraulic Inverted Fork: Often compared to the competitor FASTACE, the KKE brand offers you a high-performance hydraulic fork with 180mm travel and mounted on reinforced aluminum fork clamps of 51/54mm (large diameter), this original configuration will make a real difference compared to the competition!

KEE Shock Absorber on 450mm Linkage: The CRZ ERZ PRO linkage mounting 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 450 mm KKE shock absorber ensures perfect mass balance with the front suspension.

High Strength Steel Competition Frame with Double Central Tube: Balanced and reliable to accommodate the power of the ZONGSHEN 300cc and its 22hp +1.5hp with the PowerBomb exhaust. CRZ installs the best on the market for you, this competition frame guarantees unmatched reliability! Have no doubt about the durability of the ERZ PRO series chassis.

Seat Height 92cm - 18" rear and 21" front rims: This Motocross seat height is ideal for people measuring between 1.70m and above.

The advantages of the linkage mounting:

A linkage shock absorber increases the progressiveness between the wheel movement and the shock absorber travel, which improves riding comfort and the quality of suspension absorption. This explains why the shock absorber is longer than a shock absorber in a classic setup.


For Viewing the complete assembly of the Motocross CRZ ERZ PRO and advice from the Mini MX Workshop Click here

The assembly:

All our vehicles are delivered pre-assembled on a pallet by a specialized carrier. You will only need to finish assembling a few easy parts (handlebar, front wheel, shock absorber axle (2 screws)...). Once the assembly is complete, if the factory settings are not fully adapted to your environment, we invite you to consult our YouTube channel (Mini MX) where you will find both mechanical tutorials and vehicle assembly videos.

Our Workshop remains at your entire disposal to assist you throughout your experience at 09.72.39.05.37 (Free Call), by email [email protected], or via the online chat

YouTube channel link: https://www.youtube.com/@MiniMX_

Important information: The oil contained in the engine is storage oil, it is imperative to change it upon arrival of the vehicle.

We recommend the IPONE or Putoline maintenance Packs:

PUTOLINE

- 1x PUTOLINE 4T 10w40 Semi-Synthetic DX4 Engine Oil 1L

- 1x PUTOLINE 500 ml Carburetor Cleaner Spray

- 1x PUTOLINE 500 ml Drytec Chain Lubricant Spray

IPONE

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

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


All spare parts available for the 300cc S via the Micro Sheet or via the category specially designed for the 300cc but also in the generic categories of the minimx site.

300CC S TECHNICAL MICRO SHEET => CLICK HERE <=

300CC S SPARE PARTS CATEGORY => CLICK HERE <=

 

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 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 22hp
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

Braking system

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

Tire

Wheel Axle 15mm
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"

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
Number of teeth Crown 49 teeth

Electrical System

Battery Ampere/hour 12V5AH

Handlebars/Controls

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

Others

Color Yellow, Green
Warranty 1 month Engine (Running-in period) 3 months cycle part
Brand CRZ
Vintage 2026
Seat KTM-L
Type of bike 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
Want us a question about: Motocross CRZ ERZ - 300cc PRO S -... Ask a Question
ERZ300S-GR
2026-06-15

Specific References

ean13
3667155103092

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