RMI85PP R20 / HYDRAULIC 50CC

RMI85PP R20 Hydraulic 50cc | Genuine Marine | Muir Australia

The Muir RMI85PP R20 Hydraulic 50cc is a genuine factory replacement gearbox-motor unit designed for HR4000 Thor horizontal windlasses. This complete hydraulic drive unit combines a proven gearbox with a 50cc hydraulic motor, delivering the heavy, sustained torque needed for serious offshore anchoring on hydraulically-powered vessels.

Built for Marine Conditions

Hydraulic drive systems are the preferred choice for large yachts and commercial vessels thanks to their unmatched torque, smooth power delivery, and ability to operate continuously without overheating. This gearbox-motor assembly is precision-engineered to exact OEM specifications, ensuring perfect compatibility with the HR4000 Thor windlass and reliable performance under heavy chain and anchor loads.

Key Features

• Genuine Muir replacement hydraulic drive unit
• 50cc hydraulic motor with matched gearbox
• Designed specifically for HR4000 Thor windlasses
• Continuous-duty operation without overheating
• Built for harsh marine operating conditions
• Direct fit — no modifications required

Why Choose Genuine Muir Parts?

Choosing the authentic Muir replacement ensures perfect compatibility, optimal hydraulic performance, and long-term reliability. Aftermarket motor-gearbox units often use inferior components that wear quickly, leak, or fail under load — risking damage to your windlass and unsafe anchoring. Trust genuine Muir parts for dependable performance and full warranty support.

Order your replacement RMI85PP R20 hydraulic drive today from Muir Australia — trusted marine engineering since 1968.