Types of exhaust (Silencer) for 350 / 500CC

First & Foremost question which comes in all the Bull (Royal Enfield) Rider’s mind is “Which are the types of Exhaust Silencers (Mufflers) available in the market? And which is the best Exhaust Silencer for My Royal Enfield Model? Let it be Thunderbird, Classic, Standard or 350 CC / 500 CC.

Firstly let me make you understand “What Exhaust Silencer is?” And then we would classify all the after stock exhaust silencers in the board 3 categories along with pros and cons.

An Exhaust Silencer 

An exhaust is a series of pipes that links the engine to a silencer and a catalytic converter leading the burnt gas from the combustion chamber of the engine to outside. Exhausts have four main functions: to control noise, to direct exhaust fumes away from passengers, to improve the performance of the engine and to improve fuel consumption. 

Catalytic converter 

It is a vessel in the exhaust system containing catalysts like platinum, palladium, and rhodium; platinum and palladium convert harmful exhaust gasses by further oxidation of carbon monoxide and unburned hydrocarbons into water and carbon dioxide, and rhodium breaks the nitrogen oxides into nitrogen and oxygen. 

Types of Exhaust Silencers 

Absorption Type: The noise is absorbed by specific acoustical fibre inside the silencer. The Absorption Type silencer is most effective in the middle and high frequency range. These silencers are the least effective in reducing the thumps given off by the engine, which is what all of the Royal Enfield Bull Riders wants… Most of the after stock market silencers Goldie, Punjab, Indore, Rockets, Wild Boar falls into this category. 

Reflection Type: The noise is reduced by creating a gas flow through separate chambers in the silencer. This category includes aftermarket silencers made by Royal Enfield themselves for off-road riding (Upswept Exhaust) 

Reflection / Absorption Type: Silencers are based on a combination of absorption and reflection damping techniques in order to reduce the noise in the complete frequency range. This includes Exhaust Silencers used by the Royal Enfield in there new models (Company fitted) 

Details about Exhaust Silencers (Mufflers) available in Market for Royal Enfield

1. Upswept Exhaust: Designed for the classic 350 and the classic 500. It’s an after-market exhaust supplied by RE itself for off-roading purposes. Cost : NRI 2900 Approx
2. Goldstar Exhaust: A design made popular by BSA goldstar motor cycles. These exhausts also called Godie offer a deeper bass and better thumb. There are many varieties to choose from and even shorter versions are available. Cost : NRI 3500 Approx
3. Megaphone Exhaust: Megaphone exhausts are performance exhaust, which were initially made for the café racer .They are really loud but are not suitable for uphill or highway runs due to lesser torque provided. Cost : NRI 2500 Approx
4. Punjab Exhaust: Cheapest and loudest of all Exhaust, build based on the Absorption Type Silencers. An Indian made exhaust which tries to imitate the classic thumb almost to perfection. You almost can’t tell the difference. Cost : NRI 1800 Approx
5. Indori Exhaust: Another Indian made exhaust which tries to imitate the classic thumb almost to perfection. You almost can’t tell the difference. Cost : NRI 2300 Approx

Hope you would like the information on the different types of the Exhaust Silencers available for your Royal Enfield (Bull)

Happy Thumping