Hot Sale Twin Disc MGX-6690 SC Marine Transmission Gear Vulcan Coupling Only US$28.000.00. Twin Disc MGX-6690 SC marine gear, 2.81:1 ratio, SAE Housing # 00, Flexible VULKAN coupling for 21″ flywheel with drive ring, Electric GP-valve with manual override, EC050 E-troll / profile module, Output shaft driven trailing pump, Live PTO and more.
- Maximum Input Rating: Up to 1174 kW (1574 HP) @ 1800 RPM (Medium Duty).
- Maximum Engine Speed: 2300 RPM standard (up to 2500 RPM for specific gear ratios like 2.47:1, 2.93:1, and 3.21:1).
- Housing Material: Lightweight, high-strength aluminum housing.
- Configuration: Vertical offset input/output shafts.
- Dry Weight: 1,001 kg (2,207 lbs) base weight including SAE No. 0 housing and standard coupling.
- Coupling Brand: VULKAN highly elastic natural rubber coupling.
- Flywheel Compatibility: Built to match SAE J620 size 530 (designed for a 21-inch engine flywheel) accompanied by a driving ring. An 18-inch (SAE 460) option is also available.
- Housing Fitment: SAE No. 00 or SAE No. 0 bell housing interface.
- Function: Absorbs shock impacts, protects the gear train, and accommodates radial, axial, and angular misalignments.Â
- QuickShift® System: Fully integrated electronic actuation package providing rapid, smooth clutch response and precision trolling capability.
- Valves & Actuators: Electric GP-valve equipped with a physical manual override.
- Profile Module: EC050 or EC600PC electronic interface for digital propulsion controls and engagement signaling.
- Filtration & Cooling: Features an integrated oil strainer, oil filter, and a raw-water mounted oil cooler


























Ethan Alex –
good condition and suitable for my machine..