What Are the Torque Specs for a 2013 Honda CRF450R?

Shop parts for a 2013 Honda CRF450R Dirt Bike.

The 2013 Honda CRF450R was one of the most comprehensively redesigned versions of the platform in years—featuring a new cylinder head, a revised intake airbox, and substantially updated suspension tuning across both the Showa forks and shock. The 449cc DOHC engine received revised port geometry and a new combustion chamber that improved mid-range power and throttle responsiveness. These updates introduced several torque specification changes from the 2012 model that owners and mechanics should account for.

Engine Torque Specs

The 2013 CRF450R’s revised cylinder head uses an updated bolt pattern on the cam cover that differs from the 2012 design. The cam cover bolts are a routine service item whenever valve clearances are checked—and clearance checks are required more frequently on the 2013 competition engine than on trail bikes due to the high compression and aggressive cam profiles.

Engine ComponentTorque Spec
Spark plug18–22 Nm (13–16 ft-lb)
Oil drain plug29–35 Nm (21–26 ft-lb)
Cylinder head bolts (8mm)40–48 Nm (30–35 ft-lb)
Cylinder head bolts (6mm)12–15 Nm (9–11 ft-lb)
Cam sprocket bolts20–25 Nm (15–18 ft-lb)
Flywheel bolt85–100 Nm (63–74 ft-lb)
Clutch hub nut85–100 Nm (63–74 ft-lb)

Suspension and Chassis Torque

The extensively revised Showa fork setup on the 2013 CRF450R requires careful fork clamp torque management. The 2013 model introduced a lighter fork casting compared to prior years, and the reduced wall thickness means fork clamp bolt torque has a more direct effect on fork tube deformation under clamping load.

Suspension & Chassis ComponentTorque Spec
Upper fork clamp bolts20–25 Nm (15–18 ft-lb)
Lower fork clamp bolts20–25 Nm (15–18 ft-lb)
Handlebar clamp bolts20–25 Nm (15–18 ft-lb)
Swingarm pivot nut88–108 Nm (65–80 ft-lb)
Rear shock upper mount40–50 Nm (30–37 ft-lb)
Rear shock linkage bolts40–50 Nm (30–37 ft-lb)

Drivetrain and Brake Values

Drivetrain ComponentTorque Spec
Front axle nut59–69 Nm (44–51 ft-lb)
Rear axle nut88–108 Nm (65–80 ft-lb)
Rear sprocket nuts35–45 Nm (26–33 ft-lb)
Chain adjuster lock nuts22–26 Nm (16–19 ft-lb)
Brake ComponentTorque Spec
Front caliper mounting bolts28–34 Nm (21–25 ft-lb)
Rear caliper mounting bolts22–26 Nm (16–19 ft-lb)
Front brake disc bolts20–24 Nm (15–17 ft-lb)
Rear brake disc bolts20–24 Nm (15–17 ft-lb)

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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.