| Component | Specification |
|---|---|
| Model Year | 2024–Present (RH16) |
| Engine Oil | SAE 10W-30 JASO MA (2.6 L) |
| Tire Size (F/R) | 120/70 ZR 17 / 180/55 ZR 17 |
| Tire Pressure (F/R) | 2.50 bar (36 psi) / 2.90 bar (42 psi) |
| Battery Type | YTZ10S |
| Spark Plug | NGK SILMAR9A9S |
The 2024 Honda CB 650 R (RH16) represents a milestone in motorcycle engineering as the first production multi-cylinder motorcycle to feature the Honda E-Clutch. This system combines elements of manual transmissions, Quickshifters, and Dual Clutch Transmission (DCT) technology into a compact 2kg actuator package, allowing riders to start, stop, and shift gears without ever touching the clutch lever, though a traditional lever remains for manual override.
Engineering Deep Dive: The RH16 Evolution
The RH16 generation continues the ‘Neo Sports Café’ design language but introduces significant electronic and structural refinements. The 649cc DOHC 16-valve inline-four engine remains a masterclass in linear power delivery, producing a distinctive intake howl through the updated twin air ducts. The RH16 chassis maintains its tuned rigidity balance, paired with 41mm Showa Separate Function Big Piston (SFF-BP) USD forks, providing high-precision feedback during aggressive cornering.
Maintenance Essentials
To maintain the high-performance standards of the RH16, strict adherence to the service schedule is paramount. The E-Clutch system, while robust, relies on the health of the electrical system and oil quality.
- Lubrication: Use only high-quality SAE 10W-30 JASO MA oil. The oil capacity is 2.6 liters. Given the high-revving nature of the inline-four, regular oil changes are critical for protecting the valvetrain and the E-Clutch actuators.
- Ignition: The RH16 utilizes NGK SILMAR9A9S laser-iridium plugs. These are designed for longevity and a stable spark even under high thermal loads.
- Electrical: The YTZ10S battery is the heart of the electronic suite. Ensure terminals are clean, as the E-Clutch actuators require consistent voltage for optimal performance.
Chassis and Handling
The tire setup remains standard for the middleweight class: a 120/70 front and 180/55 rear. However, the RH16 is sensitive to tire pressure. For optimal stability and tire life, maintain 2.50 bar (36 psi) in the front and 2.90 bar (42 psi) in the rear. These pressures are optimized for the bike’s 200+ kg curb weight and the torque-neutral handling characteristics of the Honda chassis.
Editorial Verdict
At MotoSpecsLab, we rate the CB 650 R (RH16) a 4.8/5. It successfully bridges the gap between traditional mechanical engagement and futuristic automation. The E-Clutch is not just a gimmick; it is a sophisticated performance tool that reduces rider fatigue without sacrificing the soul of a manual gearbox.
Frequently Asked Questions
Can I still use the clutch lever on the E-Clutch model?
Yes. The system allows for manual override at any time. If you pull the lever, the system temporarily disengages the electronic control.
Is the E-Clutch available as a retrofit for older models?
No. The E-Clutch requires specific engine casing modifications and integration with the ECU found on the RH16 generation.