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Sport riders love the near-perfect blend of impressive power, long-travel suspension, outstanding value and thoughtful convenience features that come with the Sportrax 300EX.

Features & Benefits
New for 2005

  • Team Honda-inspired graphics.
  • New rear brake light.


  • Dependable 282cc SOHC four-stroke engine produces impressive power over a broad rpm range.
  • Gear-driven counterbalancer minimizes engine vibration for smooth running.
  • Maintenance-free automatic cam-chain tensioner.
  • Reliable, maintenance-free CD ignition with electronic advance.
  • Convenient electric starter helps make starting easy.
  • Snorkel-type air intake is positioned high in the chassis for reduced water/dirt contamination.
  • Close-ratio five-speed transmission offers a gear for every situation.
  • Simple-to-use reverse gear allows easy maneuvering in tight spaces.
  • Specially designed 32mm carburetor with accelerator pump offers excellent fuel economy and crisp throttle response.
  • USDA-qualified muffler/spark arrester offers quiet operation and maximum power.


  • Box-section high-tensile steel frame offers strength, rigidity, and light weight.
  • Long-travel, double-wishbone independent front suspension features five-position spring preload adjustability.
  • Heavy-duty hydraulic single-shock rear suspension offers five-position spring preload adjustability.
  • Strong, lightweight box-section swingarm utilizes an easy-to-use eccentric chain-adjustment system.
  • Durable and lightweight heavy-duty O-ring-sealed drive chain.
  • Specially designed knobby tires offer superb grip and long life.
  • Triple hydraulic disc brakes.
  • Rear caliper brake-pad wear indicator.

Additional Features

  • Engine design produces low emissions and meets California Air Resources Board (CARB) off-road emissions standards.
  • Ergonomically designed riding position offers a high level of comfort.
  • Powerful 60/55-watt halogen headlight.
  • Comfortable dogleg levers with cable adjusters and dust cover.
  • Attractive handlebar cover.
  • Washable, two-stage foam air filter.
  • Multi-function handlebar-mounted switch assembly is easy to use.
  • Easy-to-use parking brake.
  • Keyed ignition switch offers added security.
  • Handlebar switches, controls and warning labels use internationally approved ISO graphic symbols.
  • Maintenance-free battery.
  • Tough steel front skidplate.
  • Rear mudguard with rigid footrests.
  • Transferable six-month limited warranty; extended coverage available with a Honda Protection Plan.
  • Ownership includes one-year complimentary membership in the Honda Rider's Club of America(tm) (HRCA(r)). Benefits include: discounts, travel benefits, roadside assistance for ATV transport vehicle while ATV is being transported, one year complimentary subscription to Honda Red Rider ATV(tm) magazine, access to HRCA Clubhouse Web site (, access online to Honda Common Service Manual. For HRCA details, call 1-800-847-HRCA.

Available accessories

  • Flag kit.

2005 Honda TRX300EX Specifications

  • Engine Type: 282cc air-cooled SOHC single-cylinder four-stroke
  • Bore and Stroke: 74mm x 65.5mm
  • Carburetion: 32mm piston-valve with accelerator pump
  • Ignition: CD with electronic advance
  • Starter: Electric
  • Clutch: Manual
  • Transmission: Five-speed with reverse
  • Driveline: O-ring-sealed chain
  • Suspension:
         Front: Independent double-wishbone with dual hydraulic shocks; five-position spring preload adjustability; 6.7 inches travel
         Rear: Swingarm with single shock; five-position spring preload adjustability; 7.9 inches travel
  • Brakes:
    Dual hydraulic disc
         Rear: Single hydraulic disc
  • Tires:
         Front: 22 x 7-10 knobby
         Rear: 22 x 10-9 knobby
  • Length: 67.7 inches
  • Width: 43.5 inches
  • Height: 42.7 inches
  • Seat Height: 30.3 inches
  • Ground Clearance: 4.9 inches
  • Wheelbase: 45.3 inches
  • Turning Radius: 10.2 feet
  • Dry Weight: 377 pounds
  • Fuel Capacity: 2.2 gallons, including 0.5-gallon reserve
  • Colors: Red, Yellow

For highly-experienced riders 16 years of age and older.

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