RED LINE SKU: 57-6552

Red Line Suspension Fluid 5W 16 oz - Harley & Indian V-Twin

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About Red Line

Red Line parts and accessories are stocked at Vtwinbikers for Harley-Davidson and Indian Motorcycle applications. Every Red Line item we list is new and sourced through authorized distribution. If you are not certain a part matches your year and model, use Shop by Bike or email our team before you order and we will confirm fitment first.

Red Line 5W Suspension Fluid is a synthetic shock oil specifically engineered for V-twin motorcycle dampeners. Its advanced formulation is designed to reduce fade, lower operating temperatures, and extend shock life, ensuring consistent and reliable suspension performance. With superior shear stability, this fluid allows for the use of lower viscosities while maintaining optimal damping in demanding riding conditions.

Why riders pick this

  • Superior shear stability for consistent performance
  • Allows use of lower viscosities without sacrifice
  • Reduces shock fade and operating temperatures
  • Eliminates foaming with excellent seal lubricity
  • Mixable for custom viscosity tuning

For riders who demand precise control and consistent performance from their Harley-Davidson or Indian Motorcycle's suspension, Red Line 5W Suspension Fluid is an essential upgrade. This synthetic oil maintains its integrity under high stress, preventing the breakdown and foaming that can lead to inconsistent damping and a compromised ride. It's about giving you confidence in every corner and over every bump.

Consistent Damping, Enhanced Durability

  • Superior shear stability compared to conventional shock oils
  • Allows use of lower viscosities without sacrificing performance
  • Significantly reduces shock fade and operating temperatures
  • Eliminates foaming with excellent seal lubricity for predictable response
  • Anti-wear additives extend the service life of shock components

Customizable for Your Ride

Red Line 5W Suspension Fluid offers excellent flexibility for fine-tuning your V-twin's suspension. It is fully mixable with other Red Line suspension fluids, enabling you to create a custom viscosity tailored to your specific riding style, motorcycle setup, and weight. This personalized approach ensures your Harley-Davidson or Indian Motorcycle handles exactly as you want it to, whether you're chasing performance or comfort.

Specifications

  • Brand: Red Line
  • Manufacturer Part #: 91122
  • UPC: 083522911221
  • Viscosity: 5W
  • Size: 16 oz
  • Weight: 0.98 lbs
  • Dimensions: 2.6 in L × 2.6 in W × 9.4 in H

Common questions

Can I mix Red Line 5W suspension fluid with other Red Line viscosities?

Yes, Red Line suspension fluids are formulated to be fully mixable. This allows you to create custom viscosities to precisely tune your motorcycle's damping characteristics to your preference.

Will this fluid help reduce shock fade on my V-twin?

Absolutely. Red Line 5W's superior shear stability and advanced formulation are designed to significantly reduce shock fade and lower operating temperatures, ensuring more consistent and reliable damping performance.

Is this product suitable for both front forks and rear shocks?

Yes, Red Line 5W suspension fluid is engineered for use in both conventional fork dampeners and rear shocks on V-twin motorcycles, including Harley-Davidson and Indian Motorcycle models.

Ordering from Vtwinbikers

  • Brand new, sourced through authorized US distribution — never used, never grey-market.
  • Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
  • Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
BRANDRed Line
TYPEChemicals
SKU57-6552
WEIGHT0.98 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
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