- Royal Enfield offers E20 retrofit kits for older BS3 and BS4 models
- Prices start at approximately 48 euros / 50 US dollars
- The background is India’s gradual transition to E20 fuel
Royal Enfield is taking a practical step in response to India’s changing fuel landscape. The Chennai-based manufacturer has introduced official retrofit kits that allow older motorcycles in the 350 series to be converted for use with E20 fuel. E20 refers to gasoline with a 20 percent ethanol content, which is set to gradually become the standard in India as part of a government initiative.
Which Models Are Affected
The retrofit kits are aimed at owners of the Royal Enfield Classic 350, Bullet 350, and Thunderbird 350 that still comply with the older BS3 and BS4 emission standards. These motorcycles were originally designed to run on conventional gasoline or E10 fuel. With the increasing availability of E20 at Indian fuel stations, these older models can experience problems without modification, as ethanol in higher concentrations attacks certain materials in the fuel system.
Newer models that already meet the BS6 standard are designed for E20 fuel from the factory and do not require retrofitting.
What the Kits Include
The E20 retrofit kits comprise several components specifically designed for compatibility with the higher ethanol content. These include a modified carburetor, ethanol-resistant fuel lines, new seals, and other fuel system parts. The exact composition varies depending on the model and year of manufacture.
Prices and Availability
The costs for the retrofit kits start at 4,396 Indian rupees (approximately 48 euros / 50 US dollars) and vary depending on the model and the scope of the kit required. Installation is to be carried out through Royal Enfield’s authorized dealer and service network.
Background: India’s Path to E20 Fuel
The Indian government has been pursuing the goal of gradually increasing the ethanol content in fuel for several years. The nationwide introduction of E20, originally targeted for 2025, has already been brought forward. The Ministry of Road Transport and Highways had directed vehicle manufacturers by regulation to offer appropriate retrofit solutions for older existing vehicles so that they remain compatible with the new fuel standard.
Royal Enfield is complying with this directive with the kits now introduced. Since a large number of older Royal Enfield models are in daily use in India, the measure holds considerable practical significance for the owners of these motorcycles.
What This Means for Motorcyclists
For owners of older Royal Enfield 350 models in India, the news is relevant as E20 fuel is becoming available at an increasing number of fuel stations and is likely to become the standard in the long term. Without retrofitting, damage to the fuel system could occur. The comparatively affordable kits offer a straightforward way to future-proof the motorcycles without having to decommission or replace them. For the European market, the measure has no direct impact, but it does illustrate how Royal Enfield is handling its large fleet of older models.
