Ultimate Yamaha Aerox Survival Bible
Ultimate Yamaha Aerox Survival Bible
The Complete Technical Guide to the 50cc 2-Stroke & 155cc VVA: Error 12 Fix, CVT Tuning, and Performance Secrets
This comprehensive technical data sheet provides the factory specifications for the Yamaha Aerox 155, known globally as the NVX 155 and GDR155. Designed for the 'Ultimate Survival' of your machine, this guide covers everything from the Blue Core VVA engine tolerances to the specific OBD-II electrical requirements.
STOP GUESSING. START TUNING.
In the Ultimate Yamaha Aerox Survival Bible, @cagmito76 breaks down years of teardowns, tuning sessions, and community-proven "hacks" into one essential 10-chapter guide.
What’s Inside the Bible:
The "Error 12" Permanent Fix: A step-by-step guide to bypassing the melted stator connector and saving your ECU.
CVT Transmission Masterclass: How to choose the perfect roller weights and belts for instant acceleration or higher top speed.
2-Stroke vs. 4-Stroke Maintenance: Specific specs for both the classic Minarelli and modern VVA engines.
The "Indonesian Suspension" Secret: How to get premium comfort using genuine OEM parts for a fraction of the cost of aftermarket shocks.
VVA & YECVT Troubleshooting: Keeping the Variable Valve Actuation and the 2026 Electric CVT systems running smoothly.
Electrical & Battery Gremlins: How to stop the "Y-Connect" module from draining your battery in under 3 days.
Note: These specifications apply to the Yamaha NVX 155 (Malaysia/Vietnam) and Aerox 155 (Indonesia/India/Philippines/Thailand)
BONUS: The 10-Point Aerox Buyer’s Checklist Don't buy a lemon. Use my professional inspection list to spot "hidden" crash damage, burnt LCD screens, and worn engine mounts before you hand over your cash.
By @cagmito76 — Built for the global scooter tuning community.
Engine Type: Liquid-cooled, 4-stroke, SOHC, 4-valve (VVA)
Displacement: 155cc
Max Power: 11.3 kW (15.4 PS) @ 8,000 RPM
Max Torque: 13.9 Nm (1.4 kgf-m) @ 6,500 RPM
Compression Ratio: 11.6 : 1
VVA Activation: 6,000 RPM
Transmission: V-Belt Automatic (CVT)
Engine Oil: 0.90 L (0.80 L for periodic change)
Recommended Oil: 10W-40 (Yamalube Full Synthetic)
Final Gear Oil: 0.15 L (0.10 L for periodic change)
Coolant Capacity: 0.46 L
Fuel Tank Capacity: 5.5 Litres
Spark Plug: NGK / CPR8EA-9
Spark Plug Gap: 0.8–0.9 mm
Battery: YTZ7V (12V, 6.0Ah)
Headlight: LED (High/Low)
Front Tyre: 110/80-14M/C 53P (Tubeless)
Rear Tyre: 140/70-14M/C 62P (Tubeless)
Front Tyre Pressure: 29 psi (200 kPa)
Rear Tyre Pressure: 33 psi (225 kPa)
Front Brake: 230mm Hydraulic Disc (Single Channel ABS)
Rear Brake: 130mm Mechanical Drum
V-Belt Case Filter: V-belt case air filter element cleaning interval (usually every 12,000 km).
Valve Clearances: This is a high-intent search for DIY mechanics.
Intake: 0.10–0.14 mm
Exhaust: 0.21–0.25 mm
Tightening Torques: Add a small table for "Common DIY Torques":
Oil Drain Bolt: 20 Nm (2.0 m·kgf)
Rear Axle Nut: 125 Nm (12.5 m·kgf)
Spark Plug: 13 Nm (1.3 m·kgf)