| Specification | Value |
|---|---|
| Model Range | Yamaha MT-09 ABS / Street Rally / Sport Tracker (RN29) |
| Production Years | 2013–2016 |
| Engine Oil | SAE 10W-40, API SG+, JASO MA (2.7 L) |
| Tire Dimensions | F: 120/70 ZR 17 / R: 180/55 ZR 17 |
| Tire Pressure | F: 2.5 bar (36 psi) / R: 2.9 bar (42 psi) |
| Battery Type | YTZ10S |
| Spark Plug | NGK CPR9EA-9 |
Historical Engineering Highlight: The RN29 MT-09 marked a pivotal moment in Yamaha’s history, debuting the “Crossplane Concept” (CP3) three-cylinder engine. This unit featured a unique 120-degree crank pin orientation and unequal firing intervals (0°, 240°, 480°), designed specifically to eliminate inertial torque and provide a direct connection between the rider’s throttle hand and the rear tire—a philosophy Yamaha calls “Jin-Ki Kanno.”
Technical Analysis: The CP3 Architecture
The 847cc inline-triple was a masterclass in mass centralization. By utilizing fracture-split connecting rods and integrated oil and water pipes, Yamaha reduced the engine’s weight significantly compared to the FZ8 predecessor. However, early RN29 models were known for their aggressive Yamaha Chip Controlled Throttle (YCC-T) mapping, which many riders found “snatchy” in A-mode, leading to the 2014-2015 ECU re-flash updates.
Variant Distinctions: Street Rally & Sport Tracker
While the core RN29 platform remained consistent, the Street Rally variant introduced motard-inspired ergonomics with knuckle guards, side number plates, and a flatter seat. The Sport Tracker leaned into the flat-track aesthetic, featuring aluminum number plates, carbon front fenders, and knee grips on the tank. Mechanically, these shared the same high-tensile steel frame and adjustable (though soft-sprung) 41mm inverted forks.
Maintenance Guide & Technical Specifications
To maintain the high-performance nature of the CP3 engine, adherence to the following service parameters is critical:
- Lubrication: Use 2.7 liters of high-quality 10W-40 JASO MA oil. The triple-cylinder design is sensitive to oil levels; ensure the bike is vertical when checking the sight glass.
- Ignition: The NGK CPR9EA-9 plugs should be checked for fouling, as the early fuel mapping could occasionally cause rich conditions.
- Electrical: The YTZ10S battery is compact; if the bike is stored, a smart charger is recommended to prevent ECU voltage drop errors.
Verdict
The MT-09 RN29 remains a benchmark for “bang-for-buck” performance. While the suspension requires upgrading for track use, the engine’s torque delivery and mechanical reliability are exemplary. It is the purest expression of Yamaha’s “Dark Side of Japan” ethos.