What Are the Torque Specs for a 2019 Honda CRF450R?
Shop parts for a 2019 Honda CRF450R Dirt Bike.
The 2019 Honda CRF450R continued the unicam platform introduced in 2017 and refined in 2018, with targeted updates to the airbox design and fuel injection system for improved throttle response. A key practical change for 2019 was an updated electric starter system and revised ignition mapping that improved cold-start behavior. These refinements kept the 2019 CRF450R competitive at the top of the 450cc motocross class while maintaining the robust torque architecture established by the 2017–2018 generation.
Suspension Fasteners
The 2019 CRF450R runs Showa-sourced forks with updated spring rates calibrated for the refined 2019 chassis balance. A service detail specific to the 2019 model: the revised airbox mounting system introduced new airbox-to-frame fasteners that pass through the fork area—always remove and re-torque these fasteners if the airbox is serviced, as loose airbox mounts can introduce vibration that appears to originate from the front fork area.
| Suspension & Chassis Component | Torque Spec |
|---|---|
| Upper fork clamp bolts | 20–25 Nm (15–18 ft-lb) |
| Lower fork clamp bolts | 20–25 Nm (15–18 ft-lb) |
| Handlebar clamp bolts | 20–25 Nm (15–18 ft-lb) |
| Swingarm pivot nut | 88–108 Nm (65–80 ft-lb) |
| Rear shock upper mount | 40–50 Nm (30–37 ft-lb) |
| Rear shock linkage bolts | 40–50 Nm (30–37 ft-lb) |
Engine Torque
| Engine Component | Torque Spec |
|---|---|
| Spark plug | 18–22 Nm (13–16 ft-lb) |
| Oil drain plug | 29–35 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 bolt | 35–45 Nm (26–33 ft-lb) |
| Flywheel bolt | 85–100 Nm (63–74 ft-lb) |
| Clutch hub nut | 85–100 Nm (63–74 ft-lb) |
Drivetrain and Brake Torque Values
| Drivetrain Component | Torque Spec |
|---|---|
| Front axle nut | 59–69 Nm (44–51 ft-lb) |
| Rear axle nut | 88–108 Nm (65–80 ft-lb) |
| Rear sprocket nuts | 35–45 Nm (26–33 ft-lb) |
| Chain adjuster lock nuts | 22–26 Nm (16–19 ft-lb) |
| Brake Component | Torque Spec |
|---|---|
| Front caliper mounting bolts | 28–34 Nm (21–25 ft-lb) |
| Rear caliper mounting bolts | 22–26 Nm (16–19 ft-lb) |
| Front brake disc bolts | 20–24 Nm (15–17 ft-lb) |
| Rear brake disc bolts | 20–24 Nm (15–17 ft-lb) |
Related Shopping Categories
Shop Torque Wrenches for a 2019 Honda CRF450R Dirt Bike.
Shop Wrenches and Sockets for a 2019 Honda CRF450R Dirt Bike.
Shop Thread Locker for a 2019 Honda CRF450R Dirt Bike.
Shop Additional Tools for a 2019 Honda CRF450R Dirt Bike.
Shop Penetrating Oil for a 2019 Honda CRF450R 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.
