SHIMANO Motorex Racing Fork Oil 4W — 1L bottle, anti-foaming & corrosion protection for suspension

SHIMANO Motorex Racing Fork Oil 4W is a high-performance suspension fluid formulated for consistent damping, foam control, and corrosion protection across a wide temperature range.

Designed for competitive and demanding riding, this 1-liter fork oil delivers predictable fork action by maintaining stable viscosity and quick absorption into seals and internals. The formula minimizes foaming and provides a protective film that helps reduce corrosion, extending component life. Each unit includes a maintenance pack of gaskets for service tasks and is sold in sets of six, priced per each.

How does this fork oil improve suspension performance?

The low-viscosity 4W grade provides responsive damping that preserves sensitivity on small bumps while still offering mid-stroke support. Its stable rheology helps maintain consistent fork feel from cold mornings to hot afternoons, avoiding sluggish or overly harsh responses.

• 4W viscosity tuned for balanced compression and rebound response
• Rapid absorption for smooth initial travel and small-bump sensitivity
• Maintains consistent damping across a broad temperature range

What protection does the oil offer for fork internals?

This racing-grade fluid contains additives to limit foam formation and to form a protective layer on metal surfaces. That reduces wear and lowers the chance of corrosion when forks are exposed to moisture or long service intervals.

• Anti-foaming agents to preserve damping consistency
• Corrosion-inhibiting components for long-term metal protection
• Compatible with common fork materials and seals when used per manufacturer guidance

What’s included and how is it packaged for workshops?

Each 1 L bottle is supplied with a maintenance pack containing replacement gaskets suitable for routine fork servicing. Products are sold in sets of six bottles to supply shops or teams, with pricing listed per each bottle.

• 1 L bottle of Motorex Racing Fork Oil, 4W grade
• Maintenance pack with gaskets for seal servicing
• Packaged and sold per set of six; unit price shown per bottle

How should I use this oil during fork maintenance?

Follow your fork manufacturer’s service intervals and fill volumes when refilling or replacing oil. Use the included gaskets during reassembly and dispose of old oil responsibly. Avoid mixing with unknown fluids to preserve performance and component compatibility.

• Drain and replace oil according to fork maker instructions
• Install supplied gaskets during reassembly for proper sealing
• Store bottles upright and keep away from extreme heat or direct sunlight

Who this is for: Riders and workshops seeking reliable, race-oriented fork fluid will value the SHIMANO Motorex Racing Fork Oil 4W. It’s ideal for racers, advanced mountain bikers, and professional service centers that need consistent damping, anti-foam protection, and corrosion resistance in a conveniently bundled 1 L format—with maintenance gaskets included and sold in bulk sets for efficient servicing.