SEK
NOKMotorcycle Suspension Oil – Optimize Fork & Shock Performance
Suspension oil is essential for stability, grip and rider confidence. It controls how your fork and shock absorb bumps and ensures your wheels stay planted on the road or trail.
Suspension Oils
Viscosity – The Key to Proper Damping
Suspension oils are rated in W values (2.5W, 5W, 10W, 15W). Lower numbers mean faster, lighter damping.
- Low viscosity (2.5W–5W): Fast response. Ideal for MX, enduro and modern sport bikes.
- Medium viscosity (7.5W–10W): Balanced comfort and stability for road and touring.
- High viscosity (15W–20W): Stiffer damping for older forks and heavy motorcycles.
Fork Oil vs Shock Oil
Fork Oil
Designed with anti‑foam and anti‑stick‑slip additives to reduce friction and prevent aeration.
Shock Oil
Built with a higher viscosity index (VI) to maintain damping under extreme heat and pressure.
Quick Guide – Choosing the Right Oil
| Riding Style | Viscosity | Characteristics | Examples |
|---|---|---|---|
| MX / Enduro | 2.5W – 5W | Fast response | KYB 02M / Putoline GP 5W |
| Road / Touring | 7.5W – 10W | Balanced comfort | Putoline HPX 7.5W / IPONE Fork 10W |
| Custom / Older Bikes | 15W – 20W | Stiffer damping | IPONE Fork 20W / Putoline Heavy 20W |
When Should Suspension Oil Be Changed?
- Road bikes: Every 2 years or 15,000–20,000 km.
- MX/Enduro: Every 10–20 hours for competitive riding.
- Warning signs: Harsh bottoming, excessive dive, or oil film on fork legs.
FAQ
Can I mix viscosities?
Yes, but only within the same brand and product line.
What if the oil level is wrong?
Too much oil makes the fork harsh. Too little causes bottoming. Always follow the manual.
Can I use engine oil?
No. It lacks the additives needed for suspension systems.