RCB E2 SERIES BRAKING SYSTEM
RCB S1 SERIES BRAKING SYSTEM
RCB Brake Disc E2 Series (230mm, Rear) is a high-performance aftermarket brake rotor engineered by RCB specifically for Yamaha NMAX 155 and rear-disc converted Aerox 155 scooter platforms. Crafted from heat-treated, high-grade stainless steel, this rear rotor delivers exceptional thermal stability, elevated pad friction, and extended service life under heavy daily commuting and spirited riding.
Featuring an optimized wave pattern and diagonal ventilation slots, the E2 Series rotor rapidly evacuates heat, water, and friction dust, drastically reducing thermal brake fade and maintaining crisp, consistent rear lever feel.
Key Features
Heat-Treated Stainless Steel: Manufactured from specialized stainless steel alloy treated for high tensile strength, preventing warping and surface discoloration under extreme operating temperatures.
Performance Wave & Slotted Profile: Machined wave perimeter and ventilation slots continuously clean the brake pad surface, purge water/debris, and maximize airflow for rapid cooling.
Anti-Fade Braking Power: Delivers reliable, fade-free rear braking performance during steep downhill descents, heavy two-up riding, or spirited urban commuting.
Lightweight Structural Design: Removes unnecessary material along the outer profile to lower unsprung weight, improving rear suspension absorption and chassis responsiveness.
Direct Bolt-On Compatibility: Precision 230 mm outer diameter with exact hub-centering and 3-bolt mounting dimensions for seamless installation.
Exact Vehicle Compatibility
This RCB E2 Series 230mm Rear Rotor is engineered for direct installation on the rear wheel assembly of the following models:
Yamaha NMAX Series (Rear Wheel Fitment):
Yamaha NMAX 155 V1 (2015–2019)
Yamaha NMAX 155 V2 / Connected (2020+)
Yamaha Aerox / NVX Series (Rear Wheel Fitment):
Yamaha Aerox 155 / NVX 155 (All years equipped with Rear Disc Conversion Kits or aftermarket rear disc hub setups)
Technical Specifications
| Feature | RCB Brake Disc E2 Series Details |
| Brand Origin | RCB |
| Product Series | E2 Series Steel Brake Disc |
| Position / Side | Rear (RR) Wheel Assembly |
| Outer Diameter | 230 mm |
| Material Construction | Heat-Treated High-Grade Stainless Steel |
| Design Style | Wave Contour with Diagonal Ventilation Slots |
| Mounting Pattern | Standard 3-Hole Bolt Pattern (Yamaha Rear Hub Spec) |
| Fitment System | Direct OEM Bolt-On (NMAX) / Custom Disc Hub Fitment (Aerox) |
Product Structural Form
The E2 Series rear disc consists of a solid, single-piece heat-treated stainless steel plate precision-cut via high-energy lasers. The outer braking track features smooth wave-contoured edges and strategically angled ventilation channels to disrupt thermal buildup. The center mounting hub is machined to mirror factory tolerances, ensuring zero lateral runout and elimination of rear brake lever pulsation.
Operational Safety Notice: Always apply medium-strength thread-locking compound to disc rotor mounting bolts before final torquing. Never contaminate the new rotor friction track with grease or oil during installation. Clean the disc surface with solvent-free brake cleaner prior to riding, and allow 50 km to 100 km for full friction pad bedding.
