| Component | Specification |
|---|---|
| Model Series | RM17 (Euro 4) |
| Production Years | 2018 – 2020 |
| Engine Oil | SAE 10W-40 / 15W-50 (JASO MA) |
| Oil Volume | 2.6 L (with filter) |
| Tire Dimensions | F: 120/70 ZR 17 / R: 180/55 ZR 17 |
| Spark Plug | NGK LMAR8A-9 |
| Battery | YTZ10S |
The RM17 iteration of the Yamaha MT-07 represents a pivotal moment in the ‘Dark Side of Japan’ lineage. While many enthusiasts focus on its aggressive aesthetics, the true engineering highlight of the RM17 is the refinement of the Crossplane Concept (CP2) engine to meet Euro 4 standards without sacrificing its characteristic 270-degree crank ignition sequence. This specific firing order mimics the power delivery and inertial torque characteristics of a V-twin, providing the rider with exceptional linear throttle response in a lightweight parallel-twin configuration.
Engineering Overview: The RM17 Evolution
The 2018–2020 RM17 model introduced significant chassis refinements over its predecessor (the RM04). Engineers revised the suspension damping rates and increased the spring rate to address ‘softness’ reported in earlier models. The Moto Cage variant, though sharing the same mechanical heart, features stunt-inspired crash protection and unique aesthetics that demand specific attention during inspection for frame stress.
Lubrication and Cooling System
The CP2 engine is remarkably robust but sensitive to oil quality. For the RM17, Yamaha specifies SAE 10W-40 or 15W-50 meeting API SG or higher and JASO MA standards. The total capacity for a dry engine is 3.0 liters, but a standard oil and filter change requires exactly 2.6 liters. Using the correct JASO MA rated oil is critical to prevent wet-clutch slippage under high torque loads.
Electrical and Ignition
The ignition system utilizes long-reach NGK LMAR8A-9 spark plugs. Given the high-revving nature of the CP2, maintaining a precise gap of 0.8 – 0.9 mm is essential for fuel efficiency and smooth idling. The electrical system is anchored by the YTZ10S battery, which must be kept at a high state of charge to support the digital dash and EFI sensors.
Chassis and Contact Patch
The RM17 runs a standard supersport tire configuration. For optimal handling and tire longevity, pressures should be maintained at 2.25 bar (33 psi) front and 2.50 bar (36 psi) rear. If carrying a passenger or heavy luggage, the rear pressure should be increased to 2.90 bar (42 psi) to maintain carcass stability and prevent overheating.
MotoSpecsLab Editorial Verdict
The Yamaha MT-07 RM17 remains a gold standard in the middleweight naked category. Its balance of mechanical simplicity and engaging power delivery makes it a favorite for both novices and veterans. From a technician’s perspective, the RM17 is exceptionally easy to service, with most critical components easily accessible, ensuring that the ‘Dark Side of Japan’ stays on the road rather than on the lift.