Mercury – Quicksilver 5W Motorcycle Shock Oil | Suspension Fluid | Medium-Light Viscosity | 8M0128405

Overview

Anyone who rides regularly knows the difference a good suspension makes. It’s not just about smoothing out the bumps — it’s about feeling connected to the road or trail in a way that builds confidence. When your shocks are working the way they should, the bike feels steady beneath you, predictable in corners, and controlled even when the terrain gets rough. Quicksilver 5W Motorcycle Shock Oil is made for riders who want that level of consistency every time they head out, whether they’re carving pavement, tackling backroads, or leaning into a long day on the trail. It delivers stability you can feel and performance you can trust.

Key Features

• Medium-light viscosity 5W formula for high-performance shock applications
• Designed to reduce shock fade under heavy use
• Provides dependable protection for internal shock components
• Formulated to maintain consistent damping across temperature swings
• Recommended for all motorcycle makes and models
• Meets or exceeds manufacturer warranty requirements
• Packaged in a one-quart bottle for easy servicing

Engine & Boat Compatibility

(Suspension-specific — motorcycles only)

• Compatible with motorcycles using rebuildable or serviceable front or rear shock systems
• Suitable for sport bikes, adventure motorcycles, dirt bikes, touring bikes, and cruisers
• Works with aftermarket or OEM shock assemblies that require 5W shock oil
• Safe to use without affecting manufacturer warranties

Performance & Practical Benefits

What riders appreciate most about this oil is how steady and predictable their suspension feels after a service. Shock fade — that mushy, weak feeling that creeps in after long stretches of riding — is dramatically reduced thanks to Quicksilver’s stable 5W formula. Instead of your suspension softening as heat builds, the damping stays consistent. Corners feel tight instead of vague, and rough terrain becomes something you can glide over rather than fight through.

Temperature changes are another area where this shock oil shines. Early morning rides, high-elevation trails, or hot summer afternoons won’t drastically change the behavior of your suspension. The oil maintains its viscosity, preventing harshness in the cold or excessive softness in the heat. Over time, that consistency helps extend the life of your shock components by keeping friction under control and protecting internal seals from unnecessary wear. Whether you’re tuning for performance or simply maintaining your ride, this Mercury Marine part number gives you confidence in every mile.

Why Buy OEM

Suspension tuning is one of those areas where cutting corners can really hurt the riding experience. With Quicksilver, you’re getting a shock oil built from the same engineering mindset that protects high-load marine systems — environments where performance and reliability cannot be compromised. Aftermarket blends often fall short when temperatures rise or the miles start adding up. This OEM-trusted formulation stays stable, resists foaming, and delivers consistent damping far longer than cheaper alternatives. It’s a smart investment for riders who care about how their bike feels, not just how it runs.

FAQ

Q1: Which motorcycles does Quicksilver 5W Motorcycle Shock Oil fit?

It’s suitable for all motorcycles with serviceable shocks that specify a 5W suspension fluid.

Q2: What makes it different from other shock oils?

Its stable viscosity and fade-resistant formula offer consistent damping under heavy use — a key advantage for both on-road and off-road riding.

Q3: How do I know if this is the right oil for my setup?

Check your service manual. If your shock requires a medium-light 5W oil, this part number is an excellent match.

Q4: Can it handle extreme temperatures?

Yes. It’s designed to maintain smooth damping in both hot and cold conditions, giving your suspension a steady, reliable feel year-round.

Q5: Is installation straightforward?

If your shocks are rebuildable, adding or replacing shock oil is simple for experienced riders or any shop technician.