Classic 350 BS3 silencer 591860/N, Classic 500 BS3 stock muffler (plated). Restore factory sound and back-pressure on your BS3 Classic with the genuine Royal Enfield Silencer Assembly — Part No. 591860/N. This is the complete plated OE muffler specified for Classic 350 UCE (BS3) and Classic 500 EFI (BS3) domestic models. Because it’s OEM, the canister volume, baffle path and inlet collar match BS3 calibration precisely, so fueling and low-rpm torque stay correct—no re-jet/re-map, no packing guesswork. Bracket angles, boss spacing and clamp land align with the stock BS3 header and rear stay for a true bolt-on install.

Use this when reverting from loud slip-ons to original exhaust, repairing crash/corrosion damage, or preparing for inspection/RTO. Supplied as a complete silencer can; reuse OE clamp and gasket if serviceable. BS3-ONLY fitment keeps returns at zero—do not use on BS4/BS6/J-Series.

Key Features

• OE identity: 591860/N — “SILENCER ASSY.” (plated, domestic)

• BS3-only compatibility: Classic 350 UCE BS3 & Classic 500 EFI BS3

• Restores OEM back-pressure & stock sound; highway-friendly noise levels

• Direct bolt-on: correct hanger geometry and joint position

• Factory plated finish for corrosion resistance and “showroom” look

• Ideal when replacing dented/corroded pipes or undoing aftermarket mods

Compatibility Table 

Exclusions: Not for BS4/BS6, not for Electra/Thunderbird, not for J-Series. Always match the part number on your VIN fiche or the label on your existing silencer.

Variants

• 591860/N — Silencer Assembly (Plated, BS3) (this product)

• Related (order by VIN): rear silencer bracket, clamp, gasket/hardware

FAQs

1) Will 591860/N fit BS4 Classics?
No. This is BS3-only. BS4/BS6 models use different mufflers and emissions calibration.

2) Do I need tuning or remap after installing this OEM exhaust?
No—stock BS3 fueling remains correct. This restores factory geometry and back-pressure.

3) What’s included in the box?
A complete plated silencer can with welded hangers (no clamp/gasket/bolts).

4) Is this quieter than aftermarket slip-ons?
Yes—returns the bike to OEM noise for comfortable touring and inspection compliance.

5) How do I verify before purchase?
Open your VIN-specific microfiche or check the old can’s label: it should show 591860/N.