The Apollo RFZ Z40 140cc Adult Dirt Bike is a large-frame off-road motorcycle built for trail riding, practice tracks, and aggressive recreational riding. Powered by a YX 140cc air-cooled 4-stroke single-cylinder engine with a performance NIBBI PE22 carburetor, this dirt bike delivers strong throttle response, smooth power delivery, and dependable trail performance.
Featuring a 4-speed manual transmission with clutch (N-1-2-3-4) and a rugged chain drive system, the Z40 gives riders full control over gearing and acceleration. The bike is equipped with front and rear hydraulic disc brakes, long-travel suspension, and a double-beam heavy-duty steel frame designed to handle jumps, rough terrain, and hard riding.
With a tall 32.5-inch seat height, high 14.5-inch ground clearance, and a 17/14 wheel setup, the Apollo Z40 is ideal for teen and adult riders looking for a capable mid-size dirt bike with professional-style handling.
Features & Specifications
| Item | Details |
|---|---|
| Model | Apollo RFZ Z40 / Vitacci Z40 |
| Type | Adult Gas Dirt Bike / Off-Road Motorcycle |
| Engine Brand | YX |
| Carburetor | NIBBI PE22 |
| Engine Type | 140cc, air-cooled, 4-stroke, single-cylinder |
| Transmission | 4-Speed Manual (N-1-2-3-4) |
| Clutch | Manual |
| Drive System | Chain drive |
| Bore × Stroke | 56 × 57 mm |
| Compression Ratio | 9.8 : 1 |
| Max Power | 11 HP @ 8000 RPM |
| Max Torque | 10.2 N·m @ 7500 RPM |
| Starting System | Kick start |
| Ignition | CDI |
| Fuel Tank Capacity | 1.03 gallons |
| Engine Oil Capacity | 0.24 gallons |
| Front Brake | Hydraulic disc |
| Rear Brake | Hydraulic disc |
| Front Tire | 70/100-17 |
| Rear Tire | 90/100-14 |
| Front Suspension | SYD non-adjustable, 30.3 inches |
| Rear Suspension | SYD adjustable, 13.8 inches |
| Frame | Double-beam heavy-duty steel frame |
| Seat Height | 32.5 inches |
| Wheelbase | 49.2 inches |
| Ground Clearance | 14.5 inches |
| Net Weight | 168 lbs |
| Gross Weight | 196 lbs |
| Dimensions (L × W × H) | 70 × 30.7 × 46 inches |
| Carton Size | 57.5 × 15 × 29.5 inches |
| Assembly Required | Front wheel, handlebar, rear shock |
| Colors | Red, Blue, White, Green |
Key Features
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YX 140cc 4-stroke air-cooled dirt bike engine
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Performance NIBBI PE22 carburetor
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4-speed manual clutch transmission
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Front and rear hydraulic disc braking system
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Large 17″ front and 14″ rear off-road wheels
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Adjustable rear suspension for trail tuning
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Heavy-duty double-beam steel frame
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High ground clearance for aggressive riding
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Ideal for teen and adult off-road riders
Assembly & Delivery
A fully assembled unit is available only for pickup from the retail store in Dallas, Texas.
This dirt bike ships brand new and 70% assembled inside a metal crate.
Final assembly, preparation, basic maintenance, and all technical work must be completed by a certified technician.
Warranty:
30-day replacement parts only.
Labor, mechanic service, and returns are not covered.
Freight Shipping Includes:
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Lift gate service
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Residential delivery
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Shipping insurance
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Delivery appointment scheduling
⚠️ A working phone number is required for delivery coordination.