Royal Enfield launches E20 conversion kit for BS3 & BS4 motorcycles
Royal Enfield has rolled out the E20 conversion kit, a bolt‑on solution that upgrades 350cc and select 500cc models to meet BS3 and BS4 emission standards.

Royal Enfield E20 Conversion Kit Launch – Price, Design, and Mileage Details
Image: Royal Enfield E20 Conversion Kit Launch – Price, Design, and Mileage Details – Performance Comparison and Specifications

Design & Looks
The kit keeps the classic Royal Enfield silhouette intact. It replaces the old carburetor with a compact fuel‑injection module that fits into the existing engine cradle. The new air‑intake housing has a matte black finish, matching the bike’s rugged styling. Installation requires no major bodywork, so riders retain the bike’s iconic look.
- Fuel‑injection module: sleek black housing, easy fit.
- ECU upgrade: pre‑programmed for BS3/BS4 compliance.
- Exhaust adaptor: retains original exhaust tone.
Performance & Mileage
Beyond meeting emission rules, the E20 kit promises smoother throttle response and a modest gain in fuel efficiency. Royal Enfield claims a 5‑7% improvement in mileage compared with the stock carbureted engine.
- Estimated mileage: 45‑50 km/l for 350cc models.
- Power delivery feels more linear, especially at low revs.
- Reduced engine noise during idle.
Price & Rivals
The conversion kit is priced at INR 12,995 for 350cc bikes and INR 14,995 for the 500cc variants. This positions it competitively against aftermarket fuel‑injection kits, which often cost upwards of INR 20,000 and require extensive tuning.
- Factory‑approved warranty of 12 months.
- Installation can be done at any authorized Royal Enfield service center.
- Comparable to Honda’s BS4 kits, but at a lower price point.
| Engine | Mileage | Price (INR) | Top Features |
|---|---|---|---|
| 350cc | 45‑50 km/l | 12,995 | Fuel‑injection, BS3/BS4 compliant, 12‑month warranty |
| 500cc | 40‑45 km/l | 14,995 | Fuel‑injection, BS3/BS4 compliant, 12‑month warranty |
FAQ
- What is the mileage after installing the E20 kit? Royal Enfield estimates 45‑50 km/l for the 350cc and 40‑45 km/l for the 500cc model.
- Can the kit be used on any Royal Enfield bike? It is designed for 350cc models, but many parts are compatible with 500cc variants.
- Is the conversion worth the cost? At under INR 15,000, the kit offers factory support, improved fuel economy, and emission compliance, making it a strong value.
What’s next?
If you own a BS3 bike and are looking for a clean, cost‑effective upgrade, the E20 kit is worth a closer look. Share your thoughts or ask questions in the comments below – we’d love to hear your experience.
Source: Read Official News