MINI DIRT BIKES / INTERNATIONAL B2B MOTORCYCLE

K50 4-Stroke

The KAMAX K50 4-Stroke is a compact recreational mini dirt bike powered by a 53.5cc four-stroke gasoline engine. Featuring recoil starting, an automatic centrifugal clutch and motocross-inspired styling, it brings the familiar look of an off-road motorcycle into a smaller, entry-level format.

For professional buyers
Distributors · Importers · Dealer groups · OEM / ODM

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K50-4-Stroke-53.5cc-Gas-Powered-Mini-Dirt-Bike

K50 4-Stroke

Overview
Positioning
Highlights
Specifications
Media
OEM/ODM
FAQ

01 ·  MODEL & SUPPLY OVERVIEW

Built around the realities of your market.

A clear view of the product, supply and market considerations that matter at the start of a motorcycle program.

Displacement

53.5cc

Fuel system

Carburetor

Maximum Power

1.45 kW / 7,000 rpm

Brake & Control

Disc / Disc

MOQ

SKD 198 Units

Lead Time

30–45 Days

Supply Format

SKD / CKD

Market Compliance

Reviewed by Target Market

Market compliance：reviewed according to the target market and confirmed separately.

02 · MARKET POSITIONING

53.5cc Gas-Powered Mini Dirt Bike

The K50 4-Stroke combines a compact off-road chassis with a single-cylinder, air-cooled four-stroke gasoline engine. Its recoil starter, CDI ignition and automatic centrifugal clutch provide a straightforward operating layout without manual gear shifting or a starting battery. Unlike the K50 2-Stroke, the four-stroke model operates on gasoline without requiring two-stroke oil to be premixed with the fuel. Engine lubrication is handled separately.

Primary Use

Recreational off-road riding in controlled private areas.

Market Fit

Families seeking compact gas-powered recreational dirt bikes for younger riders.

Portfolio Role

Entry-level four-stroke mini dirt bike for recreational retail markets.

03 · Product Highlights

Designed with purpose.

The key design, engineering and equipment decisions that shape the character and everyday performance of the model.

    • K50 4-Stroke | Kamax Motorcycle

    DESIGN

    Compact Dirt Bike Styling

    The K50 4-Stroke captures the distinctive appearance of a dirt bike in a compact recreational format. Raised fenders, slim bodywork and off-road styling give the model a recognizable motorcycle profile without the dimensions of a full-size dirt bike.

    • Compact Bodywork
    • 590 mm Seat Height
    • 30 kg Net Weight
    • K50 4-Stroke | Kamax Motorcycle

    POWER

    53.5cc Four-Stroke Gasoline Engine

    The K50 4-Stroke is powered by a 53.5cc single-cylinder, air-cooled engine delivering 1.45 kW at 7,000 rpm and 2.24 N·m of torque at 4,000 rpm. Its four-stroke design runs on gasoline without requiring fuel-and-oil premixing. Carburetor fuel delivery, CDI ignition and recoil starting complete a conventional small-engine configuration without a starting battery.

    • 53.5cc Four-Stroke
    • No Fuel Premixing
    • Recoil Start
    • K50 4-Stroke | Kamax Motorcycle

    CONTROL

    Automatic Drive, No Manual Shifting

    The K50 4-Stroke features a wet centrifugal clutch that automatically engages the drive as engine speed increases, eliminating the need for manual gear shifting. Combined with its recoil starting system, the automatic drive arrangement keeps the main operating controls straightforward for supervised recreational use.

    • Wet Centrifugal Clutch
    • Automatic Engagement
    • No Manual Shifting
    • Tether Engine Stop
    • K50 4-Stroke | Kamax Motorcycle

    EQUIPMENT

    10-Inch Off-Road Tires & Compact Chassis

    Equipped with 2.50-10 tires at both ends, the K50 4-Stroke features a compact wheel setup with off-road tread characteristics. A 910 mm wheelbase, 180 mm minimum ground clearance and 3.7 L fuel tank complete its small recreational chassis configuration.

    • 2.50-10 Tires
    • 910 mm Wheelbase
    • 180 mm Ground Clearance

04 · Technical specifications

Reference data. Project-approved detail.

Core technical data for product evaluation, market assessment and project planning.

Full project datasheet

Detailed specifications may vary according to destination market, selected equipment and approved project configuration.

Model

K50 4-Stroke

Download Specification PDF

  • Engine Model

    ZKG50

  • Engine Type

    Single-Cylinder, 4-Stroke, Air-Cooled

  • Displacement

    53.5 cc

  • Compression Ratio

    8.5:1

  • Maximum Power

    1.45 kW / 7,000 rpm

  • Maximum Torque

    2.24 N·m / 4,000 rpm

  • Bore × Stroke

    43.5 × 36 mm

  • Fuel System

    Carburetor

  • Starting System

    Recoil Pull Start

  • Clutch Type

    Wet Centrifugal Clutch

  • Transmission Type

    Continuously Variable Transmission

  • Fuel Type

    Gasoline

  • Dimensions (L × W × H)

    1,340 × 570 × 770 mm

  • Seat Height

    590 mm

  • Wheelbase

    910 mm

  • Minimum Ground Clearance

    180 mm

  • Curb Weight

    30 kg

  • Maximum Load

    70 kg

  • Maximum Speed

    40 km/h

  • Fuel Tank Capacity

    3.7 L

  • Front /Rear Brake

    Disc /Disc

  • Front/Rear Tire

    2.50-10 ; 2.50-10

  • Engine Stop

    Tether-Operated Shut-Off

    • Certification

      /

    • Loading Capacity

      40HQ: SKD 198 Units ； CKD 380 Units

    * Final technical details are defined by the confirmed project specification.

    05 · COLORS & PRODUCT MEDIA

    Evaluate the product in detail.

    Explore exterior views, available finishes, equipment details and product video to assess this model for your market and portfolio.

    Play

    06 · OEM/ODM & Project Support

    Configured for your
    market and brand.

    KAMAX supports distributors, importers and private-label partners with product configuration, brand customization, supply planning and market-specific preparation — all based on the technical feasibility and commercial scope of the project.

    01 Product Configuration

    Engine · Brakes · Tires · etc.

    Subject to platform availability and feasibility

    02 Brand Customization

    Body Colors · Brand Logo · Racing Graphics · Number-Plate Graphics · Seat Graphics · Product Labels · Packaging

    Subject to MOQ, artwork and production scope

    03 Market Adaptation

    Engine configuration · Lighting requirements · Instrument specification · Warning labels · Manual language · Product labeling · Destination-market compliance review

    Subject to destination-market review

    Project support

    Flexible Supply

    CBU / SKD / CKD project direction.

    Export Documentation

    Project-related export document support.

    Spare Parts Planning

    Initial-order spare parts planning support.

    Container Planning

    Packing and loading direction for shipment.

    07 MANUFACTURING & GLOBAL EXPERIENCE

    The capability behind every project.

    01

    MANUFACTURING FILM

    Inside KAMAX Manufacturing

    Assembly · Inspection · Packing · Export preparation

    WATCH FACTORY FILM →

    02

    CUSTOMER & PARTNER VISITS

    Customer & Partner Visits

    Factory visits · Product reviews · Test rides · Cooperation discussions

    VIEW BUYER STORIES →

    09 · Buyer FAQ

    Questions from
    professional buyers.

    Answers to common questions about ordering, customization, supply formats, compliance and after-sales planning.

    More B2B FAQs →

    • The KAMAX K50 4-Stroke is a 53.5cc gasoline-powered mini dirt bike designed for recreational off-road use. It features an air-cooled four-stroke engine, recoil starting and an automatic centrifugal clutch.

    • No. The four-stroke engine runs on gasoline and uses a separate engine oil lubrication system. Unlike the K50 2-Stroke, it does not require two-stroke oil to be mixed with the fuel.

    • The K50 4-Stroke has a 53.5cc four-stroke engine, a net weight of 30 kg and 180 mm ground clearance. The K50 2-Stroke uses a 49cc two-stroke engine, weighs 27 kg and has 200 mm ground clearance.

      Both models feature recoil starting and automatic centrifugal drive, but their engine operating cycles and fuel requirements differ.

    • No. Its centrifugal clutch engages automatically as engine speed increases, so conventional manual gear shifting is not required.

      Buyers should confirm the product configuration, destination-market requirements, preferred supply format, packaging, order quantity and shipment arrangements before placing an order.

    • KAMAX can review body graphics, logos, product labels and packaging for private-label orders. Available options depend on order quantity and production feasibility.

    10 · Start a project

    Discuss this model
    for your market.

    Share your market, expected volume and product requirements. Our team will review the project and provide the relevant technical and commercial information.

    Request Project Quote
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