Maxima Racing Fork Fluid 5WT — 1L Low-Stiction, Shear-Stable Suspension Oil for Motocross Forks

Developed for motocross and high-performance front forks, this 1-liter bottle of Maxima (59901-5) racing fork fluid balances friction reduction, oxidation resistance, and seal conditioning to keep modern cartridge and standard suspensions working smoothly. The formula includes advanced friction modifiers, anti-foam agents, rust inhibitors, and shear-stable polymers to preserve damping characteristics under heavy use. Its high viscosity index (190+) limits viscosity change with temperature, while rust and seal conditioners extend component life without compromising responsiveness.

What improvements will I notice after switching to Maxima 5WT fork fluid?

Expect reduced stiction at initial travel, more consistent damping through repeated strokes, and improved fork responsiveness on technical terrain. The combination of friction reducers and seal conditioners helps forks feel smoother off-center and during small-bump compliance.

• Lower initial resistance for better small-bump sensitivity.
• Stable damping through repeated compression-rebound cycles.
• Enhanced seal lubrication to reduce binding and wear.

Is this fluid compatible with my cartridge or standard fork system?

Yes — the Maxima Racing Fork Fluid is formulated for both standard and cartridge forks and is compatible with most late-model motocross forks. Its 5WT grade is comparable to many OEM 01/SS7 and standard KYB fluids, making it a straightforward replacement in most applications.

• Suitable for cartridge and conventional fork designs.
• 5WT viscosity aligns with common OEM specifications (01, SS7, KYB std).
• Can be blended with other grades to achieve intermediate viscosities.

How does this oil perform under temperature and prolonged use?

The elevated viscosity index (190+) and oxidation-resistant additives minimize viscosity drift when temperatures change and under sustained use. Anti-foam and shear-stable polymers help maintain consistent damping and reduce the risk of aeration or thinning during heavy riding.

• High viscosity index for steady performance in varying climates.
• Anti-foam agents to prevent cavitation and inconsistent damping.
• Shear-stable polymers preserve viscosity and damping over time.

How should I choose between 5WT and heavier grades like 7WT, 10WT, or 15WT?

Choose 5WT for quicker initial response and lighter damping typical of late-model motocross forks. Move to 7WT, 10WT, or 15WT if you need stronger damping, reduced dive under braking, or heavier fork feel for big hits. You can also blend grades to reach a specific intermediate viscosity for fine-tuning.

• 5WT: quicker rebound and lighter damping for agile handling.
• 7–15WT: increased damping for heavier setups or more aggressive tracks.
• Blendable to create custom viscosity for precise suspension tuning.

Who this product is for: Riders, mechanics, and race teams who demand stable, low-friction front suspension performance will benefit from Maxima 5WT Racing Fork Fluid. It’s aimed at motocross, off-road, and sport riders using modern cartridge or standard forks who want consistent damping, reduced stiction, and protection against oxidation and corrosion without changing fork internals. Use it when rebuilding forks, refreshing old oil, or fine-tuning damping characteristics to match riding style and track conditions.