2019 Honda CRF250R Torque Specs: Fastener Reference for the Modern 250 Four-Stroke Racer
Shop parts for a 2019 Honda CRF250R Dirt Bike.
The 2019 Honda CRF250R received a major update with a new single-cam (SOHC) 249cc liquid-cooled engine design that improved low-to-mid power while significantly reducing engine weight. The new engine architecture also brought a revised cylinder head design and updated cam timing that changed key torque specifications compared to the previous DOHC configuration. If you're working on a 2019 CRF250R, note that engine fastener torque values reflect this new SOHC architecture. This guide covers all key fasteners on the updated 2019 Honda CRF250R.
Engine Fastener Torque (New SOHC Engine)
The 2019 CRF250R's transition from DOHC to SOHC brought a simpler valve train with a single cam shaft, revised head bolt pattern, and a lighter overall top end. Head bolt torque on the new SOHC architecture is particularly important during initial assembly—always retorque after the first heat cycle.
| Fastener | Torque (ft-lb) | Torque (Nm) |
|---|---|---|
| Spark plug | 9–11 | 12–15 |
| Oil drain bolt | 18–22 | 24–30 |
| Cylinder head bolts (10mm) | 29–33 | 39–45 |
| Cylinder head bolts (6mm) | 9–11 | 12–15 |
| Cam sprocket bolt | 14–18 | 19–24 |
| Clutch hub nut | 87–101 | 118–137 |
| Flywheel/rotor nut | 76–87 | 103–118 |
Suspension & Chassis Hardware
| Fastener | Torque (ft-lb) | Torque (Nm) |
|---|---|---|
| Fork pinch bolts (upper) | 15–19 | 20–26 |
| Fork pinch bolts (lower) | 15–19 | 20–26 |
| Steering stem nut | 72–87 | 98–118 |
| Handlebar clamp bolts | 14–18 | 19–24 |
| Swingarm pivot bolt | 87–101 | 118–137 |
| Rear shock upper mount | 33–40 | 45–54 |
| Rear shock lower mount | 33–40 | 45–54 |
| Linkage pivot bolts | 40–47 | 54–64 |
Wheels & Drivetrain Torque
| Fastener | Torque (ft-lb) | Torque (Nm) |
|---|---|---|
| Front axle nut | 36–43 | 49–58 |
| Rear axle nut | 76–87 | 103–118 |
| Rear sprocket nuts | 36–43 | 49–58 |
| Drive sprocket bolt | 25–29 | 34–39 |
| Chain adjuster lock nuts | 14–18 | 19–24 |
Brake Hardware
| Fastener | Torque (ft-lb) | Torque (Nm) |
|---|---|---|
| Front caliper mounting bolts | 20–25 | 27–34 |
| Front brake disc bolts | 14–17 | 19–23 |
| Rear caliper mounting bolts | 22–27 | 30–37 |
| Rear brake disc bolts | 14–17 | 19–23 |
The 2019 CRF250R's new SOHC engine is a significant departure from the DOHC architecture used since 2004—and it responds directly to precise top-end torque work. Apply head bolt torque carefully after any top-end service on the new engine, and maintain the same systematic pre-race discipline on axles, brakes, fork clamps, and handlebar hardware that the CRF250R has always demanded.
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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.
