BMC FM783/08 Air Filter for Royal Enfield Bullet 350, Classic 350 & Thunderbird 350 (Pre-J-Series)

Upgrade your Royal Enfield's breathing — without ever replacing the filter again.

The BMC FM783/08 is a premium washable and reusable performance air filter engineered for the Royal Enfield Bullet 350, Classic 350, and Thunderbird 350 (pre-J-Series / UCE engine). Built with BMC's signature multi-layered oiled cotton gauze, it flows significantly more air than the OEM paper filter while trapping fine particulates with precision — delivering measurably better throttle response and a crisper mid-range.

Unlike disposable OEM filters, the FM783/08 is designed to last the life of your motorcycle. Clean it, re-oil it, reinstall it. Zero compromise on protection, zero recurring cost.

Why riders choose BMC over OEM:

• Higher airflow: Oiled cotton gauze construction allows more air into the combustion chamber for a more responsive throttle
• Lifetime filter: Washable and re-oilable — no annual replacements
• Precision fit: Drop-in replacement for the stock airbox — no modifications needed
• Genuine BMC: Sourced directly from BMC Airfilters India Pvt Ltd — authorised Indian distributor
• Includes GST: MRP is inclusive of 18% GST

Compatible Motorcycles:

• Royal Enfield Bullet 350 (UCE engine)
• Royal Enfield Classic 350 (pre-J-Series / UCE engine, up to 2021)
• Royal Enfield Thunderbird 350

For the J-Series Classic 350, Meteor 350, and Hunter 350 (2021 onwards), please select the FM01138 variant.