2018 Cobra CX50FWE Dirt Bike Torque Specs
Shop parts for a 2018 Cobra CX50FWE Dirt Bike.
The 2018 Cobra CX50FWE Factory Works Edition continues the premium 50cc competition package with updated carburetion tuning and improved exhaust components. The air-cooled two-stroke with Factory Works specification delivers sharp throttle response through the competition chassis. Improved carburetion on the 2018 FWE sharpens the engine’s response to the aggressive throttle inputs young competitive riders use at the 50cc level — precise exhaust flange nut torque at 8 Nm protects the header seal that determines whether that improved response translates to the track.
Engine Torque Specifications
| Fastener | Torque (Nm) | Torque (ft-lbs) |
|---|---|---|
| Spark Plug | 12 | 9 |
| Cylinder Head Nuts | 8 | 6 |
| Cylinder Base Nuts | 8 | 6 |
| Flywheel/Rotor Nut | 25 | 18 |
| Clutch Hub Nut | 20 | 15 |
| Exhaust Flange Nuts | 8 | 6 |
Chassis & Suspension
| Fastener | Torque (Nm) | Torque (ft-lbs) |
|---|---|---|
| Swingarm Pivot Bolt | 22 | 16 |
| Fork Clamp Bolts | 8 | 6 |
| Handlebar Clamp Bolts | 8 | 6 |
| Shock Upper Mount | 18 | 13 |
| Shock Lower Mount | 18 | 13 |
| Subframe Bolts | 10 | 7 |
| Engine Mount Bolts | 15 | 11 |
Wheels & Drivetrain
| Fastener | Torque (Nm) | Torque (ft-lbs) |
|---|---|---|
| Front Axle Nut | 18 | 13 |
| Rear Axle Nut | 28 | 21 |
| Rear Sprocket Nuts | 12 | 9 |
| Chain Adjuster Lock Nuts | 8 | 6 |
Brakes
| Fastener | Torque (Nm) | Torque (ft-lbs) |
|---|---|---|
| Front Caliper Bolts | 10 | 7 |
| Rear Caliper Bolts | 10 | 7 |
| Disc Bolts | 6 | 4 |
Factory Works Notes
Premix two-stroke — no oil drain plug. Updated carburetion makes exhaust flange nut verification especially important. A 1/4-inch drive wrench for engine hardware; 3/8-inch drive for wheel and chassis fasteners.
Thread Locker Recommendations
- Rear sprocket nuts
- Disc bolts
- Subframe bolts
- Exhaust flange nuts
Torque Wrench Selection
A 1/4-inch drive click-type for engine fasteners and a 3/8-inch drive for chassis hardware. Two sizes maintain the complete competition specification of the 2018 CX50FWE.
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Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.