2009 Cobra CX50SR Dirt Bike Torque Specs
Shop parts for a 2009 Cobra CX50SR Dirt Bike.
The 2009 Cobra CX50SR continues the Standard Race 50cc competition platform with updated suspension settings and improved component specifications. The air-cooled 50cc two-stroke in the competition chassis delivers reliable performance for young racers competing in the 50cc class. Updated suspension calibration on the 2009 SR improves handling consistency across the track conditions and surface types that 50cc competition encompasses. Improved shock damping settings translate directly into faster, more consistent lap times for young competitors — shock mount bolt torque at 18 Nm maintains the geometry that the improved damping settings depend on through a full day of racing.
Engine Torque Values
| 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 |
Standard Race Notes
Premix two-stroke — no oil drain plug. Updated suspension makes shock mount verification especially important. A 1/4-inch drive wrench for engine hardware; 3/8-inch drive for 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 calibrated sizes maintain the complete Standard Race competition specification.
Related Shopping Categories
Shop Torque Wrenches for a 2009 Cobra CX50SR Dirt Bike.
Shop Wrenches and Sockets for a 2009 Cobra CX50SR Dirt Bike.
Shop Thread Locker for a 2009 Cobra CX50SR Dirt Bike.
Shop Additional Tools for a 2009 Cobra CX50SR Dirt Bike.
Shop Penetrating Oil for a 2009 Cobra CX50SR Dirt Bike.
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.
