What Are the Torque Specs for a 2017 Honda CRF450R?
Shop parts for a 2017 Honda CRF450R Dirt Bike.
The 2017 Honda CRF450R was a ground-up redesign—the most significant overhaul the platform had received since the 2006 aluminum frame introduction. Honda completely reworked the engine with a unicam layout (a return to a single overhead cam approach after years with DOHC), a new launch control system, an electric starter, and a substantially revised frame and subframe architecture. The 2017 CRF450R is effectively a new motorcycle, and its torque specifications reflect that.
Engine Fasteners
The 2017 CRF450R’s new unicam cylinder head uses a different bolt pattern and fastener architecture than the 2016 DOHC head. The unicam layout eliminates the separate exhaust cam cover and intake cam cover of the prior DOHC design, consolidating valve train access into a single cam cover. The cam cover bolts on the 2017 unicam head are a critical regular service point for valve clearance checks.
| 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) |
The 2017 CRF450R’s electric starter adds a starter motor mounting flange to the left crankcase. Starter motor bolts are a new service point on this generation that didn’t exist on kick-start-only predecessors. Loose starter motor mounts cause gear whine and eventual starter gear damage.
Chassis and Suspension
The 2017 CRF450R introduced a new steel perimeter frame with significantly revised geometry compared to the 2015–2016 aluminum platform. The new frame uses more traditional steel construction for improved flex characteristics, and the revised frame geometry changes the steering head angle, swingarm pivot location, and rear suspension mounting points relative to the prior generation.
| 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) |
Drivetrain and Brake Torque
| 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 2017 Honda CRF450R Dirt Bike.
Shop Wrenches and Sockets for a 2017 Honda CRF450R Dirt Bike.
Shop Thread Locker for a 2017 Honda CRF450R Dirt Bike.
Shop Additional Tools for a 2017 Honda CRF450R Dirt Bike.
Shop Penetrating Oil for a 2017 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.