SHIMANO Motorex Racing Fork Oil 4W 1L — low-foaming, corrosion-resistant suspension fluid

SHIMANO Motorex Racing Fork Oil 4W is a purpose-formulated suspension fluid that delivers consistent damping, strong corrosion resistance, and anti-foaming performance across a wide temperature range.

Engineered for riders and technicians who demand reliable fork behavior, this 1-liter Racing Fork Oil (4W) from Motorex offers predictable absorption characteristics whether the fork is cold or hot. The formula helps maintain stable damping, reduces aeration inside the fork assembly, and includes a maintenance pack to service seals and gaskets for a clean rebuild. Sold in sets of six, each unit is priced individually for easy inventory control.

How does this fork oil affect suspension feel in varying temperatures?

The 4W viscosity is chosen to balance low-temperature responsiveness with high-temperature control. It preserves supple initial action when cold while resisting thinning during extended, hard use so the damping curve stays predictable.

• Viscosity grade: 4W to support a wide operating range
• Stable shear characteristics reduce viscosity change from heat
• Improved initial stroke and mid-stroke support for consistent travel

What protections does it provide inside the fork?

This oil includes additives to minimize foaming and protect metal surfaces from corrosion, extending service intervals and preserving internal components. Reduced aeration leads to crisper damping and fewer unpredictable rebounds or packing effects.

• Anti-foaming agents to cut aeration under rapid cycling
• Corrosion inhibitors to protect stanchions and damping cartridges
• Clean, low-deposit formulation to limit wear and sludge

What comes in the package and how does it help maintenance?

Each 1L bottle is supplied with a maintenance pack of gaskets and seals to facilitate a proper fork service. Having fresh sealing components on hand reduces the risk of leaks and contamination when changing oil or rebuilding forks.

• 1 x 1L bottle of Motorex Racing Fork Oil 4W per unit
• Maintenance pack containing new gaskets/seals for a clean rebuild
• Sold in cartons of six bottles; priced individually for single-unit purchases

Is this oil compatible with my fork model and service routine?

Motorex Racing Fork Oil is suitable for most modern suspension forks that specify a mineral or conventional fork oil with a similar viscosity. Always consult your fork manufacturer’s service manual for recommended viscosity and whether additives are compatible with internal cartridge materials.

• Check your fork manual for recommended viscosity (4W equivalence)
• Confirm compatibility with cartridge seals and damping materials
• Use the included maintenance pack for replacement seals during service

Who is this for: cyclists, racers, and professional bike mechanics seeking a durable, well-balanced fork oil that maintains consistent damping across temperature extremes. It’s ideal for performance-oriented riders who rebuild forks regularly and want anti-foaming protection plus corrosion resistance. Suitable for race teams, repair shops, and serious enthusiasts keeping spares on hand.