2016 Cobra CX50SR Dirt Bike Torque Specs

Shop parts for a 2016 Cobra CX50SR Dirt Bike.

The 2016 Cobra CX50SR continues the Standard Race 50cc competition platform with updated suspension components and revised bodywork in its ninth year. The air-cooled 50cc two-stroke in the competition chassis serves young racers at the entry level of the 50cc class with nine years of proven reliability. Updated bodywork improves rider ergonomics for the current generation of young competitors. Subframe bolt torque at 10 Nm anchors the updated panel mounting system — verify these during break-in as new bodywork settles against chassis mounting points. The SR’s ninth year of development produces the most refined Standard Race specification Cobra has assembled.

Engine Torque Values

FastenerTorque (Nm)Torque (ft-lbs)
Spark Plug129
Cylinder Head Nuts86
Cylinder Base Nuts86
Flywheel/Rotor Nut2518
Clutch Hub Nut2015
Exhaust Flange Nuts86

Chassis & Suspension

FastenerTorque (Nm)Torque (ft-lbs)
Swingarm Pivot Bolt2216
Fork Clamp Bolts86
Handlebar Clamp Bolts86
Shock Upper Mount1813
Shock Lower Mount1813
Subframe Bolts107
Engine Mount Bolts1511

Wheels & Drivetrain

FastenerTorque (Nm)Torque (ft-lbs)
Front Axle Nut1813
Rear Axle Nut2821
Rear Sprocket Nuts129
Chain Adjuster Lock Nuts86

Brakes

FastenerTorque (Nm)Torque (ft-lbs)
Front Caliper Bolts107
Rear Caliper Bolts107
Disc Bolts64

Ninth-Year SR Notes

Premix two-stroke — no oil drain plug. Updated bodywork makes post-break-in subframe bolt verification especially important. A 1/4-inch drive wrench for engine hardware; 3/8-inch drive for chassis fasteners.

Thread Locker Guide

  • 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. Nine years of proven Standard Race performance is preserved by consistent calibrated maintenance.

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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.