MAXIMA SKU: 78-9921

Maxima Racing Fork Fluid - 10w 5gal

$299.99
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NOT SURE ABOUT FITMENT?

Maxima Racing 10w fork fluid in a 5-gallon container, formulated for V-twin motorcycle suspension systems. This mineral-based racing fluid reduces friction and stiction while maintaining damping performance and protecting fork internals from corrosion and wear.

Features

  • Mineral-based racing fork fluid
  • Reduces friction and prevents stiction
  • Shear-stable, high viscosity index formula
  • Minimizes foaming and air entrainment
  • Conditions seals and eliminates corrosion

Specifications

  • Brand: Maxima
  • Manufacturer Part #: 59505-10
  • UPC: 851211006271
  • Viscosity: 10w
  • Container Size: 5 gallons
  • Weight: 40.9344 lbs
  • Dimensions (L x W x H): 12 in x 12 in x 15 in

Fitment

Designed for V-twin motorcycles, including Harley-Davidson and Indian Motorcycle models.

Frequently Asked Questions

How much fork fluid does my bike need?

Most V-twin fork tubes hold 5-10 ounces per leg. A 5-gallon container will service many bikes or keep shop stock well-stocked.

Can I mix this with other fork fluids?

No — flush the fork completely with fresh fluid before switching brands or weights to avoid performance degradation.

Is this suitable for both compression and damping circuits?

Yes — Maxima 10w racing fluid works in standard fork damping and compression circuits on V-twin applications.

Do I need to change fork fluid regularly?

Fork fluid degrades over time and absorbs moisture. Most riders service forks every 2-3 years or 10,000-15,000 miles for optimal damping.

Will this improve my fork performance?

Quality racing fork fluid reduces stiction and foaming, which can improve ride feel and damping response compared to degraded OEM fluid.

BRANDMaxima
TYPEChemicals
SKU78-9921
WEIGHT40.94 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.88
8 RATINGS
5★ 7
4★ 1
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Apr 30, 2026

Perfect for the track

Quality product.

— Derek S
✓ VERIFIED
Nov 6, 2025

Fork Oil

Great product for the price, that works as it should.

— Darrell P
✓ VERIFIED
Mar 14, 2025

Fork oil

Fork oil. It goes in the forks. Easy to use.

— Ross O
✓ VERIFIED
May 16, 2022

A good quality fluid and I like the convenience of the container.

— Anonymous
✓ VERIFIED
May 4, 2019

Just the right amount of fluid to fill both forks.

— Anonymous
✓ VERIFIED
Mar 5, 2015

Put in my KYB fork

Bled my damper with this stuff, and it worked just as it should.

— K6000 K