TWIN GEAR 75W-90

TWIN GEAR 75W-90

$30.51
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SKU 114634

TWIN GEAR 75W-90

TWIN GEAR 75W-90

MOTUL TWIN GEAR 75W-90 is a high-performance, fully synthetic ester-based transmission fluid designed to withstand extreme heat and heavy shock loads commonly encountered in Big Twin, 4-speed, 5-speed, and 6-speed transmissions. It is suitable for both helical and straight-cut gears and is recommended for Harley-Davidson® motorcycles as well as other manufacturers' models.

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Person holding a Motul Twin oil bottle in front of a motorcycle

The original Syn.

We didn’t just put “Syn” on the label—we pioneered it and refined it through decades of racing. That’s why our 20W-50 TWIN Motor Oil is engineered for the demands of a modern V-Twin engine. Its advanced ester-based formula delivers stable viscosity, stronger film retention, and superior thermal resistance. And 
for riders who prefer a simplified maintenance routine, its robust formulation 
is versatile enough to perform in the engine, primary, or gearbox—without sacrificing protection.

Reliable protection in high-heat, high-load engines

Engineered to handle the elevated temperatures and stresses found in large-displacement, air- and water-cooled twin engines.

Reduced wear from start-up to sustained riding

Advanced Ester technology with molecular polar bonding helps oil cling to metal surfaces, providing a protective film that reduces wear, especially at start-up.

Strong defense for high-torque engine components

A high level of ZDDP extreme-pressure additives supports durability and extended engine life under demanding operating conditions.

Smooth, consistent wet-clutch performance

JASO MA2 certification ensures proper clutch grip, helping prevent slippage, chatter, and premature wear.