Maxima Racing Shock Fluid Light 75/390 3wt - 1 Liter - 58901L

The Maxima Racing Shock Fluid Light 75/390 3wt (Part # 58901L) is a premium mineral-based shock fluid engineered specifically for high-performance shocks across powersports and motorsports applications. Whether you're servicing late-model motorcycle rear shocks, micro sprint car shocks, or other high-performance suspension components, this 1-liter bottle of Maxima 3wt shock oil delivers the consistent, reliable damping characteristics that serious racers and performance riders demand. It's a go-to choice among riders and tuners who need predictable suspension behavior lap after lap.

Key Features & Benefits

• Mineral-Based Formula for High-Performance Use: Designed specifically for use in high-performance shocks — not a general-purpose oil — so you can trust it to meet the demands of race and sport applications.
• Shear-Stable, High Viscosity Index (300+): The shear-stable formulation with a viscosity index exceeding 300 maintains consistent viscosity and film strength under sustained use, meaning your damping characteristics stay predictable even after extended runs.
• Advanced Additive System Reduces Friction & Stiction: The additive package is engineered to minimize stiction (static friction that causes harsh initial shock movement) and reduce running friction, contributing to a smoother, more responsive suspension feel.
• Minimizes Foaming & Air Entrainment: Foam and entrained air degrade damping consistency. Maxima's formulation actively works to keep the fluid free of air bubbles, maintaining optimal damping performance throughout your ride or race.
• Ultra-Clean Formula Protects Internals: The ultra-clean formulation helps eliminate corrosion, conditions seals, and extends the service life of both steel and aluminum-bodied suspension components — protecting your investment in quality shocks.
• Compatible with Steel and Aluminum Shock Bodies: Formulated to work safely with both steel and aluminum suspension components, making it a versatile choice across a wide range of shock designs.
• 3wt (Light) Viscosity for Broad Application: The 3wt light viscosity is recommended for all late-model motorcycle shocks and micro sprint/late model car shocks where light damping fluid is specified. It offers a solid baseline before stepping up to 7wt or 10wt for heavier damping needs.

Specifications

• Brand: Maxima Racing Oils
• Part Number: 58901L
• SKU: MXA58901L
• Fluid Type: Mineral-based shock fluid
• Viscosity: 3wt (Light) — viscosity range 75/390
• Viscosity Index: 300+ (high, shear-stable)
• Volume: 1 Liter (approximately 964 mL)
• Application Category: Powersports / High-Performance Shocks / Motorsports

Fitment & Application

The Maxima 3wt Racing Shock Fluid is designed for all high-performance shocks in powersports and motorsport applications. Specific recommended uses based on manufacturer guidance include:

• Late-model motorcycle rear and suspension shocks — the 3wt light viscosity is suitable for all late-model motorcycle shocks as a standard fill.
• Micro sprint car shocks and late model race car shocks — widely used in oval racing circles for micro sprint and late model chassis shock maintenance.
• Steel and aluminum-bodied suspension components — safe for use with both body materials.

Viscosity Selection Guidance (from Maxima): Use 3wt (Light) as the standard starting point for most motorcycle and micro sprint shocks. Step up to 7wt (Medium) where additional damping is needed. Use 10wt (Heavy) for shocks from brands such as Öhlins and Fox that specify a heavier fluid. If you're unsure which weight your shock requires, consult your shock manufacturer's service manual or contact our team — we're happy to help.

What's in the Box

• 1 x Maxima Racing Shock Fluid Light 75/390 3wt — 1 Liter bottle (Part # 58901L)

Why Buy from ThreePiece.us

• Free Shipping on Every Order: No minimums, no surprises — every order ships free.
• Affirm Financing Available: Split your purchase into manageable payments with Affirm financing at checkout, so you can keep your suspension serviced without budget stress.
• Expert Fitment Help: Not sure if 3wt is the right viscosity for your specific shock or application? Our team can help you select the correct fluid weight so you get the damping performance your setup requires.

Frequently Asked Questions

Q: What is the difference between Maxima 3wt, 7wt, and 10wt shock fluid?
A: Viscosity weight determines how resistant the fluid is to flow, which directly affects damping. Maxima's 3wt (Light) is suitable for all late-model motorcycle shocks and micro sprint/late model car shocks as a standard fill. The 7wt (Medium) is recommended when additional damping is needed. The 10wt (Heavy) is specified for shocks from brands like Öhlins and Fox that require a heavier fluid. Always consult your shock's service documentation if you're unsure.

Q: Is this a synthetic or mineral-based shock fluid?
A: The Maxima 58901L is a mineral-based shock fluid. It features an advanced additive system and a high viscosity index (300+) shear-stable formulation to deliver performance and protection without a full synthetic base.

Q: Can this fluid be used in aluminum-bodied shocks?
A: Yes. Maxima specifically states that this shock fluid is designed for both steel and aluminum-bodied suspension components, so it is safe for use across a wide range of modern shock construction types.

Q: How much fluid does this bottle contain?
A: This listing is for the 1 Liter size (approximately 964 mL), identified by part number 58901L. This is the standard service size for most shock rebuilds and top-offs.