BEL-RAY SKU: 840-0411

Bel-Ray Thumper Gear Saver Wet Clutch Transmission Oil - 1 Liter - Harley & Indian V-Twin

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About Bel-Ray

Bel-Ray has manufactured motorcycle lubricants since 1948, with V-twin specific engine, primary and transmission oils formulated for air-cooled operating temperatures.

Bel-Ray Thumper Gear Saver is a synthetic transmission oil specifically formulated for V-twin motorcycle wet clutches. It delivers maximum clutch performance and promotes smooth, consistent shifting. This oil is engineered for both air-cooled and liquid-cooled four-stroke engines, providing racing-duty wear protection that helps extend clutch life.

Why riders pick this

  • Synthetic blend for V-twin wet clutches
  • Maximizes clutch performance and smooth shifting
  • Racing-duty wear protection extends clutch life
  • Works in air-cooled and liquid-cooled 4T engines

When you're pushing your V-twin, the transmission fluid takes a beating. Bel-Ray Thumper Gear Saver is purpose-built to handle the demands of performance riding, ensuring your wet clutch engages cleanly and your shifts are precise. This synthetic blend minimizes wear and tear, keeping your drivetrain running strong whether you're on the street or the strip.

Engineered for Drivetrain Longevity

  • Specifically formulated for motorcycle racing transmissions
  • Delivers maximum clutch performance and smooth, confident shifting
  • Advanced wear protection helps extend the service life of your clutch
  • Compatible with both air-cooled and liquid-cooled four-stroke wet clutches

Optimal Performance for Your V-Twin

Choosing the right transmission fluid is critical for maintaining the performance and longevity of your Harley-Davidson or Indian Motorcycle. Thumper Gear Saver helps reduce heat and friction within the transmission, contributing to a more responsive ride and peace of mind. For best results, always consult your motorcycle's service manual for recommended fluid change intervals and capacities.

Specifications

  • Brand: Bel-Ray
  • Manufacturer Part #: 99510-B1LW
  • UPC: 690509200768
  • Volume: 1 liter
  • Dimensions: 8 in L x 4 in W x 2 in H
  • Weight: 2.17 lbs

Common questions

Will this work in my Harley-Davidson wet clutch transmission?

Yes, Bel-Ray Thumper Gear Saver is engineered for all V-twin Harley-Davidson and Indian Motorcycle wet-clutch transmissions in air-cooled and liquid-cooled four-stroke engines.

Is this oil suitable for both engine and transmission?

No, this product is specifically formulated as a transmission oil for wet clutch systems. It is not intended for use as engine oil.

How much oil do I need for a transmission fluid change?

Transmission fluid capacities vary by model. Please consult your motorcycle's owner's manual or service manual for the exact amount required for your specific Harley-Davidson or Indian Motorcycle.

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.
BRANDBel-Ray
TYPEChemicals
SKU840-0411
WEIGHT2.17 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
2 RATINGS
5★ 2
4★ 0
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Sep 15, 2024

smoother shifting and it last longer

So much smoother shifting and it last longer then the brand the OEM sugest.

— Anthony L
✓ VERIFIED
Apr 3, 2020

5 Stars

— Anonymous