| Component | Specification |
|---|---|
| Model Generation | SC79B / 2020 Revision |
| Engine Oil | SAE 10W-30 JASO T 903: MA (4.6 L) |
| Front Tire | 130/70R18 M/C 63H (2.50 bar / 36 psi) |
| Rear Tire | 200/55R16 M/C 77H (2.80 bar / 41 psi) |
| Battery | GYZ20L |
| Spark Plug | NGK SIMR8T9 |
Engineering Highlight: The Double-Wishbone Revolution
The SC79 generation of the Honda Gold Wing represents the most significant engineering pivot in the model’s 40-year history. Moving away from traditional telescopic forks, Honda implemented a double-wishbone front suspension system. This configuration separates the steering function from the suspension damping, reducing friction by 30% and significantly decreasing the inertia of the front-end components. This allows for a more compact engine placement, moving the rider forward for better mass centralization and handling agility that belies the machine’s touring dimensions.
The DCT & Airbag Integration
As the ‘Tour’ flagship, this variant features the 3rd generation 7-speed Dual Clutch Transmission (DCT). Unlike standard gearboxes, the DCT uses two clutches—one for odd gears and one for even—allowing for seamless, millisecond-fast shifts that maintain torque delivery. The SC79B/20 iteration specifically refined the ‘Walking Mode’ and low-speed maneuverability logic.
Furthermore, the integrated Airbag system remains a Honda exclusive in the motorcycling world. Utilizing four sensors in the front forks, the system can detect a frontal impact and deploy the airbag in approximately 0.06 seconds, providing a critical energy-absorption buffer for the rider.
Maintenance Guide & Technical Specs
Lubrication System
The horizontally opposed six-cylinder engine requires high-quality SAE 10W-30 oil meeting the JASO T 903: MA standard. For a full change including the filter and DCT filters, the capacity is 4.6 Liters. Using the correct JASO MA specification is critical for the longevity of the DCT clutch packs.
Chassis and Contact Patch
To support the weight and torque of the Gold Wing, tire integrity is paramount. The front 18-inch wheel utilizes a 130/70R18 tire, while the rear 16-inch wheel carries a massive 200/55R16. Maintaining pressures at 36 psi (Front) and 41 psi (Rear) is essential for preventing irregular tread wear and ensuring the stability of the linked braking system.
Electrical & Ignition
The SC79 utilizes a high-output GYZ20L battery to manage the extensive electronics suite and the ISG (Integrated Starter Generator) system. Ignition is handled by NGK SIMR8T9 Iridium plugs, which offer the high-temperature stability required for the 1,833cc powerplant.
Frequently Asked Questions
Q: How often should the DCT filters be changed?
A: Honda recommends inspecting or replacing DCT filters during every major oil service to ensure hydraulic pressure remains consistent within the shift solenoids.
Q: Can I use 10W-40 oil instead?
A: While 10W-40 is common, Honda specifically optimizes the SC79’s DCT shift logic for 10W-30 viscosity. Deviating may result in slightly firmer or slower gear engagement.