The Apollo Thunder T-40 RFN 140cc Dirt Bike is an off-road model built for adult riders who want manual control in a mid-size dirt bike platform. It uses a 140cc air-cooled 4-stroke single-cylinder engine from YX, paired with a 4-speed manual transmission (N-1-2-3-4). Starting is handled by kick start only.
The engine produces 11 HP at 8000 RPM and 10.2 Nm of torque at 7500 RPM, offering responsive power for trail riding. Fuel delivery uses a NIBBI PE22 carburetor, and ignition is managed by a CDI system. Fuel tank capacity is 1.03 gallons.
The T-40 RFN rides on a 17-inch front wheel and a 14-inch rear wheel, providing balance and control on dirt terrain. Seat height measures 33 inches, suited for adult riders. Ground clearance is 13 inches, helping with uneven trails. The frame uses a double-beam heavy-duty steel design for strength.
Suspension includes non-adjustable front and rear shocks from SYD. Braking is handled by front and rear hydraulic disc brakes, with hand control on the front and foot control on the rear. This bike is off-road use only and not street legal.
The bike ships 70% assembled inside a metal crate. A certified technician is required for final assembly, prep, maintenance, and inspection. A fully assembled unit is available only for pickup from the Dallas, Texas retail store. Freight delivery includes lift gate service, residential delivery, shipping insurance, and delivery appointment scheduling.
Features & Specifications
| Item | Details |
|---|---|
| Model | Apollo Thunder T-40 RFN 140cc Dirt Bike |
| Engine Type | 140cc air-cooled 4-stroke single-cylinder |
| Engine Brand | YX |
| Carburetor | NIBBI PE22 |
| Transmission | 4-speed manual (N-1-2-3-4) |
| Starter | Kick start |
| Max Power | 11 HP @ 8000 RPM |
| Max Torque | 10.2 Nm @ 7500 RPM |
| Compression Ratio | 9.8:1 |
| Bore × Stroke | 56 × 57 mm |
| Ignition | CDI |
| Fuel Tank | 1.03 gallons |
| Engine Oil Capacity | 0.24 gallon |
| Drive Type | Chain drive |
| Front Suspension | Non-adjustable, 30.3 inches |
| Rear Suspension | Non-adjustable, 13.8 inches |
| Front Brake | Hydraulic disc (hand control) |
| Rear Brake | Hydraulic disc (foot control) |
| Front Tire | 70/100-17 |
| Rear Tire | 90/100-14 |
| Frame | Double-beam heavy-duty steel |
| Seat Height | 33 inches |
| Wheelbase | 48 inches |
| Ground Clearance | 13 inches |
| Net Weight | 176 lbs |
| Gross Weight | 198 lbs |
| Overall Size | 72.4 × 30.5 × 46.5 inches |
| Colors | Red, Blue, Green |
| Use Type | Off-road only |
| Assembly | 70% assembled in metal crate |
| Warranty | 30-day replacement parts only |
| Pickup Option | Fully assembled unit in Dallas, Texas |
| Delivery | Lift gate, residential, insurance, appointment |
Why Choose the Apollo Thunder T-40 RFN 140cc Dirt Bike
140cc engine offers more power than entry-level bikes.
Manual 4-speed gearbox supports rider skill growth.
17/14 wheel setup improves trail control.
Steel double-beam frame supports off-road riding.
Hydraulic disc brakes improve stopping control.
Compact size fits adult riders who prefer lighter bikes.
Shipping includes lift gate and delivery appointment.
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