1991 Honda CR125 Torque Specs: MX Fastener Reference
Shop parts for a 1991 Honda CR125 Dirt Bike.
The 1991 Honda CR125 arrived with significant updates, including a new frame design that improved handling and a revised engine that delivered more usable power. The 1991 model is well-regarded as one of the more capable CR125s of the early 1990s, and it remains competitive in vintage class racing. Keeping the fasteners correctly torqued on the 1991 CR125 ensures the chassis geometry and engine sealing remain intact through years of use.
Suspension & Frame
The 1991 CR125 features a revised frame with updated suspension geometry. The fork travel and shock linkage were both updated for this model year, reflecting Honda’s ongoing chassis development.
| Fastener | Torque |
|---|---|
| Fork clamp bolts (upper) | 20–25 Nm (15–18 ft-lb) |
| Fork clamp bolts (lower) | 20–25 Nm (15–18 ft-lb) |
| Handlebar clamp bolts | 20–25 Nm (15–18 ft-lb) |
| Swingarm pivot bolt/nut | 60–70 Nm (44–52 ft-lb) |
| Rear shock upper mount | 35–45 Nm (26–33 ft-lb) |
| Rear shock lower mount | 35–45 Nm (26–33 ft-lb) |
| Linkage pivot bolts | 30–38 Nm (22–28 ft-lb) |
Engine Fasteners
Two-stroke premix, no oil drain plug. 1991 CR125 engine hardware:
| Fastener | Torque |
|---|---|
| Spark plug | 20–25 Nm (15–18 ft-lb) |
| Cylinder head bolts | 22–28 Nm (16–21 ft-lb) |
| Cylinder base bolts/nuts | 15–20 Nm (11–15 ft-lb) |
| Flywheel/rotor nut | 45–55 Nm (33–41 ft-lb) |
| Clutch hub nut | 45–55 Nm (33–41 ft-lb) |
Wheels & Drivetrain
| Fastener | Torque |
|---|---|
| Front axle nut | 40–50 Nm (30–37 ft-lb) |
| Rear axle nut | 65–75 Nm (48–55 ft-lb) |
| Rear sprocket nuts | 22–28 Nm (16–21 ft-lb) |
Brakes
Front disc and rear drum on the 1991 CR125.
| Fastener | Torque |
|---|---|
| Front caliper mounting bolts | 22–28 Nm (16–21 ft-lb) |
| Front disc bolts | 8–12 Nm (6–9 ft-lb) |
| Rear brake anchor bolt | 20–25 Nm (15–18 ft-lb) |
Top-End Service Notes
For the 1991 CR125, a top-end service interval of 10–15 hours of riding is typical for motocross use. During top-end service, always check the cylinder head bolt torque after the engine cools following the first heat cycle post-reassembly. This re-torque step compensates for any gasket settling and ensures consistent cylinder sealing through the rest of the service interval. The 1991 CR125 engine responds well to proper maintenance with strong, consistent power output.
Related Shopping Categories
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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.
