Be future-ready with the genuine Royal Enfield RLT00240/A – BS29 Carburettor, the official superseding replacement for 576583/C on BS4 350 UCE models (Classic 350, Standard 350, Electra 350). RLT00240/A retains the trusted BS29 architecture and OE jet circuits yet is validated for both E10 and E20 fuels, ensuring consistent starting, stable idle, and clean throttle response even as petrol composition varies.

Installation is plug-and-play: it bolts to the stock intake manifold and air box and reuses the OE throttle & choke cables—no fabrication or guesswork. Every unit from Under The Hood is QC-checked, shipped in OE-labelled packaging, billed with a GST invoice, and packed securely to survive courier handling.

Part Chain: 576583/C → RLT00240/A (Dual-Fuel E10/E20)
Status: 576583/C is discontinued. Royal Enfield now supplies RLT00240/A for BS4 350 UCE.

Key Features

• Dual-fuel (E10/E20) compatible BS29 carb – RLT00240/A (genuine OE)

• Supersession: replaces 576583/C for BS4 350 UCE

• Factory OE jetting & float height for stock engines

• Direct bolt-on to OE manifold, air box, throttle/choke cables

• Stable idle, crisp mid-range, reliable cold & hot starts

• Precisely cast & machined passages for consistent atomization

• Under The Hood QC, GST invoice, safe packaging

Compatibility Table (confirmed only)

Exclusions: BS3 carb models, J-Series (Classic Reborn/Bullet 350 J), Meteor/Hunter.

Variants

• RLT00240/A – BS29 Carburettor (Dual-Fuel E10/E20) (this page)

• *576583/C – BS29 Carburettor (Legacy BS4 E10) — discontinued / superseded

FAQs

Q1. What changed from 576583/C to RLT00240/A?
RLT00240/A is the official successor with dual-fuel (E10/E20) validation, while keeping BS29 fit, jetting philosophy and OE feel.

Q2. Do I need new cables or a new manifold?
No—this is a direct replacement on BS4 350 UCE. Reuse OE manifold, air box, and throttle/choke cables.

Q3. Will I need to re-jet?
It ships to OE jetting. Most stock bikes won’t need changes; fine-tune only for altitude or intake/exhaust mods.

Q4. Is it okay to run only E10 with this carb?
Yes. It works perfectly with E10 and is ready for E20 whenever required.

Q5. What’s included in the box?
The carburettor assembly. Add manifold gasket/clamps if your existing ones are worn.