Bel-Ray Thumper Gear Saver Transmission - Trans OIL 1l (12/Case Sold Ea)

Bel-Ray Thumper Gear Saver is a synthetic transmission oil formulated for V-twin motorcycle wet clutches, delivering maximum clutch performance and smooth shifting. Engineered for air-cooled and liquid-cooled four-stroke engines with racing-duty wear protection that extends clutch life.

Features

• Formulated for motorcycle racing transmissions
• Maximum clutch performance and smooth shifting
• Wear protection extends clutch life
• Compatible with air-cooled and liquid-cooled 4T wet clutches
• Sold individually (1L bottle); case quantities available

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

Fitment

For V-twin motorcycles with wet clutch transmissions, including Harley-Davidson and Indian Motorcycle models with air-cooled or liquid-cooled four-stroke engines.

Frequently Asked Questions

Will this work in my Harley transmission?

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

Is this a synthetic or mineral oil?

Bel-Ray Thumper Gear Saver is a full synthetic formulation designed for racing and extended wear protection.

How much transmission fluid does my bike need?

Most V-twin transmissions require 24-48 oz (approximately 0.7-1.4 liters). Check your owner's manual for the exact capacity of your model.

Can I mix this with my current transmission oil?

Mixing different transmission oils is not recommended. Drain the old fluid completely before adding Thumper Gear Saver for best results.

What's the difference between transmission and engine oil?

Transmission oil is formulated for wet clutches and gear protection at lower temperatures. Engine oil operates at higher heat and different viscosity — use the product specified for your component.