Product Overview
TrailMaster 300 XRX EFI – High-Performance Adult Go-Kart
The TrailMaster 300 XRX EFI is a serious performance kart for experienced riders. It features a 300cc fuel-injected, liquid-cooled engine, automatic CVT with reverse, hydraulic disc brakes, and a tuned suspension for high-speed trail riding.
Important Disclaimer:
This kart is built for speed and higher-speed trail riding. It is not designed to creep or crawl up steep hills. Choose this model only if you want performance and are comfortable keeping up with maintenance.
Quick Highlights
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300cc EFI, liquid-cooled, 4-stroke single-cylinder engine
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Automatic CVT transmission with reverse (no clutch to operate)
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Hydraulic disc brakes front and rear
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Independent dual A-arm front suspension with rear swingarm shock
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Adult-size chassis with a tighter cockpit than 200-series models
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Performance emphasis: tuned for speed and flowing trails, not slow hill crawling
Overview
The TrailMaster 300 XRX EFI brings fuel-injected reliability and liquid cooling to a full-size kart designed for speed and responsive handling. The EFI system helps with cleaner starts and better fueling across different conditions and elevations.
This model rewards experienced owners who follow the recommended break-in, monitor fluids and hardware, and ride in areas where momentum and speed are appropriate. It is not a beginner kart and not intended for technical rock crawling or slow, steep climbs.
Because the radiator and plumbing are routed under the seats, the cockpit has slightly less legroom than simpler 200-series go-karts.
Key Features
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Engine: 300cc EFI, liquid-cooled, 4-stroke, single-cylinder
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Fueling: Electronic Fuel Injection (EFI) for more consistent fueling and easier starts
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Transmission: Automatic CVT with reverse for simple operation
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Brakes: Hydraulic disc brakes front and rear for confident stopping
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Suspension: Dual A-arm front suspension and rear swingarm shock for control at speed
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Chassis: Adult-size platform with a performance-tight cockpit
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Oil: Uses SAE 10W-30 engine oil
Specifications
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Engine: 300cc EFI, liquid-cooled, 4-stroke, single-cylinder
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Transmission: Automatic CVT with reverse
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Brakes: Hydraulic disc (front and rear)
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Suspension: Front dual A-arm; rear swingarm shock
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Wheels/Tires: Off-road tires on rugged rims (sizes can vary by production batch)
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Cockpit: Adult seating with reduced leg clearance compared to 200-series models
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Recommended Oil: SAE 10W-30
For exact tire sizes, belt part numbers, or overall dimensions for your specific shipment batch, please contact customer support before ordering.
Size & Fit
The 300 XRX EFI uses a full-size adult platform but has a tighter cockpit than many simpler models due to the radiator routing. Taller riders should verify legroom, knee clearance, and reach to the pedals and steering wheel.
If you are between models or on the taller side, double-check measurements and overall fit before finalizing your order.
Shipping & Assembly
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Ships securely in a protective crate with partial factory pre-assembly
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Final assembly typically includes:
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Steering and control connections
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Battery installation and hookup
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Fluid checks and top-offs
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Fastener inspection and torque checks
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Because this is a performance machine, careful setup and a proper break-in procedure are highly recommended. This kart is best suited to owners who are comfortable turning wrenches or working with a local small-engine shop.
Safety & Gear Recommendations
Always ride with proper safety gear:
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DOT-approved helmet
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Goggles or eye protection
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Gloves
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Long sleeves and long pants
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Closed-toe boots or sturdy shoes
Additional helpful accessories include:
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Hour meter for tracking service intervals
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Fuel stabilizer for stored fuel
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Chain lube and basic hand tools
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Optional whip light or flags for visibility
Warranty & Maintenance Expectations
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Covered by a manufacturer warranty against defects (see current policy details on the site)
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Routine maintenance items (belts, pads, tires, fluids, etc.) are considered wear parts and are not covered
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Owners should expect to:
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Follow the break-in procedure
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Monitor and maintain coolant levels
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Check and change engine oil at recommended intervals
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Inspect and adjust chain, brakes, and suspension components
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Regularly tighten and inspect hardware, especially after the first few rides
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The TrailMaster 300 XRX EFI is ideal for riders who want a fast, responsive go-kart with advanced features and are willing to give it the extra care a performance machine requires.
