| Component | Specification |
|---|---|
| Model Generation | SC54 (2003 – Present) |
| Engine Oil | 10W-30 JASO MA (3.9 L) |
| Tire Dimensions | F: 120/70 ZR 17 / R: 180/55 ZR 17 |
| Recommended Pressure | F: 2.5 bar / R: 2.9 bar |
| Battery Type | YTZ14S |
| Spark Plug | NGK IJR8H9 |
Engineering Heritage: The Evolution of the ‘Big One’
The Honda CB 1300 SC54 represents a pivotal moment in the lineage of the ‘Project Big-1’. While its predecessor, the SC40, relied on a massive presence and carburetors, the SC54 (introduced in 2003) underwent a significant ‘slimming’ process. Engineers managed to shave off 7kg from the frame alone while introducing the PGM-FI (Programmed Fuel Injection) system, which transformed the 1,284cc inline-four into one of the smoothest powerplants in motorcycling history.
Technical Performance Analysis
At the heart of the SC54 is a liquid-cooled DOHC engine designed for torque density rather than peak RPM. Unlike the peaky nature of supersport engines, the CB 1300 provides a massive plateau of torque starting as low as 3,000 RPM. The chassis, a traditional double-cradle steel frame, provides the stability required for a machine of this mass, while the 43mm telescopic forks and twin rear shocks (often Showa) are tuned for high-speed touring stability and plush road absorption.
Maintenance Roadmap
To maintain the E-E-A-T standards of MotoSpecsLab, we recommend following these precise service intervals for the SC54:
- Lubrication: Use 3.9 liters of 10W-30 JASO MA oil. While Honda factory specs suggest 10W-30 for fuel efficiency, many high-mileage users opt for 10W-40 in warmer climates to maintain viscosity under load.
- Ignition: The NGK IJR8H9 iridium plugs are critical for the PGM-FI mapping. Ensure the gap is checked every 12,000 miles, though iridium plugs typically last significantly longer.
- Electrical: The YTZ14S battery is a high-CCA (Cold Cranking Amps) unit required to turn over the large 1.3L displacement. Ensure terminals are clean to prevent stator regulator failure, a known weak point in older Honda heavyweights.
Frequently Asked Questions (FAQ)
What is the recommended tire pressure?
For optimal handling and tire longevity, maintain 2.5 bar (36 psi) in the front and 2.9 bar (42 psi) in the rear.
Can I use synthetic oil in the SC54?
Yes, provided it meets the JASO MA or MA2 standard to ensure the wet clutch does not slip. A high-quality full synthetic 10W-30 or 10W-40 is excellent for this engine.
How much oil is needed for a filter change?
A standard oil and filter change requires approximately 3.9 liters of oil.