Thoughts (and Sounds at 3:40mins in): Delkevic Exhaust / 225mm Oval - Royal Enfield Hunter 350

Exhaust sound WITH baffle (starts 3:40mins in)
The straight-through pipe with the 225mm Oval silencer / muffler is quite loud but not obnoxiously so. Apart from freeing up the engine, there has also been a significant improvement in terms of mileage and fuel economy.
When fitting the exhaust, I found this Video from Delkevic really helpful, as it showed how to get a good seal and what torque setting to use on the supplied nuts and bolts: Delkevic Sport Exhaust Muffler Kit Fitting Guide
• Delkevic Sport Exhaust...
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This Hunter 350 has the following performance modifications:
DNA stage 2 Air Filter,
Delkevic Exhaust System with 9" / 225mm Oval Silencer ( DeCAT ),
FuelX to modify Lambda Sensor Output and smooth out low speed performance,
PS, the freed up engine now spins up so eagerly that you can hear whenever the Hunter's rev limiter kicks in.
Mitas MC50 tyres
Hagon shock absorbers with progressive springs.
The original rear shocks were far to stiff, exaggerating every defect in the road, so I replaced them with Hagons. They give a much more pleasant and reassuring ride, but do occasionally bottom out on some of the extremely bumpy local roads of South West Ireland where I live.
Royal Enfield tall crash bars
Zana rack with grab rails (ebay)
Cheap and cheerful no-name side racks (ebay)
KettenMax 16t front sprocket (for the time being)
HNTR, Bantry, West Cork
A shout out to Sprocket and Hubs, Adare, Ireland, for supplying my machine. Our local Royal Enfield specialists, they are really friendly and look after you.
Video recorded on a cheap Samsung phone,
27th August, 2024, Sheeps Head, Co. Cork, Ireland

[@sayanbaishnab7711]

i just orderd one today. lets hope it sounds good.

[@alexugur]

Wonderful. I hope you enjoy it. It will certainly let the engine breath more easily and improve how lively the bike feels 🙂 I'd love to hear back from you how you get on with it.

[@pranitadas1837]

What about the ground clearance? When it bottoms out, does it hit the exhaust? Did you see any scuffs there?

[@alexugur]

The pipe will never scrape the ground on the straights, even when the rear shocks are bottoming out. As for lean angle, so far, I haven’t scraped the foot pegs on the ground, as the roads in my locality are very bad and most of the corners are blind bends. So I can't give a definitive answer. However, out of curiosity, I did a brief measurement: I took a long strip of 6mm plywood and laid it flat on the ground with one edge pushed up against both wheels where they touch the ground. Then, whilst sitting on the bike, I lifted the outer edge of the ply, tilting it against the bike. If one imagines the ply being representative of the ground when at lean, then the foot peg touches the ply first. The second pipe clip (with its screws hanging down) and the lowest corner of the silencer are then about 15 - 20 mm away from the ply. That clearance seems to stay roughly the same, even if I bounce my weight on the bike to compress the suspension a bit. So perhaps there is good ground clearance after all; it is certainly better than the original pipe.

[@sonakhuraijam7223]

How many kelometer Mileadge test 1 leter oil???

[@alexugur]

Average fuel consumption before the new exhaust (but with DNA stage 2 Air Filter: 85mpg (UK), 70mpg (US), 30km/l, 3.32 l/100km. First tank filled to the top after exhaust fitted: 97mpg (UK), 81mpg (US), 34.5km/l, 2.9 l/100km. Now, the values can be anywhere between those two extremes, depending on how I ride. In general, consumption has improved by 10 - 12 %.

[@japrdue]

Is it very much louder ? Can’t really tell on the video

[@alexugur]

Yes, it's a lot louder than the original. Delkevic's web page says it is not street legal in Britain. They say it is 103dB-105dB static with baffle @ 60% RPM (this is not Delkevic's loudest silencer). I don't like very loud pipes, but for me, this is just about bearable, in a pleasant way. Except for short spins just up the road, I always wear earplugs and then things are ok for long distances: the noise is never tiring. It's worth mentioning that the nearly open end can accentuates the nature of what is a long stroke engine in a very low state of tune. Plodding around at low revs is - to my ear - very pleasant: a kind of deep thudding like quality. On the other hand, hard acceleration under load is very loud (though there are plenty of exhausts/bikes that are much louder). Because the engine now spins up so easily, I think the roar under this kind of acceleration is very smooth and sporty, more like a low speed turbine engine: there is no hard edged bark to the sound. The engine sounds positively at ease holding on to higher revs, say 5000 to 6500 revs. Oddly, at cruising speed, say a constant 55 - 60 mph in top gear, the exhaust sounds quite mild and flubby, indeed a very respectable and mature sound, with most of the roar - if any - coming from the air box. And if you reduce throttle ever so slightly at this speed, the engine can barely be heard above the wind noise in the helmet. On heavy deceleration, the air box thrums gloriously whilst the exhaust sometimes pops and burbles in a rather mannered way. All of this is definitely a fair bit louder than the original exhaust. Personally, I love the character of this exhaust and how it emphasises the qualities of the Hunter.

[@japrdue]

@@alexugur thanks is it fine without the heat shield ?

[@alexugur]

@@japrdue if you look carefully, there is provision to mount the forward of the two original heat shields, the one that runs below the rider's foot peg. However, the original would likely need to be bent a little to optically match the pipe's curvature just under the rider's foot. Also, for optimal ground clearance, I have mounted the end can as high as the slot in the holding strap will allow. This means that the heat shield would need a tiny corner cut out of it. But if you don't intend to use the heat shield, little stainless steel blanking screws are provided to tidy things up. In normal use, when putting feet down, the rider's leg doesn't come anywhere near the pipe. Indeed, the brake lever stops you getting too close. However, if a pillion passenger were to put feet down, their calf muscle could touch the forward edge of the silencer or the silencer's pipe clamp. Even the front heat shield would not protect from this. However, the silencer and its pipe clamp are nowhere near as hot as the front end of the pipe. Indeed, most aftermarket silencers are fully exposed and burns don't seem to be too much of a problem.

[@japrdue]

@@alexugur thank you!

[@adityagaming7876]

how did u get that

[@alexugur]

Delkevic are a UK based company, but apparently they also have representation in the US, Australia, and Japan. You can either order from them direct, or, as I did, via the company's store on Ebay.

[@alexugur]

When fitting the exhaust, I found this Video from Delkevic really helpful, as it showed how to get a good seal and what torque setting to use on the supplied nuts and bolts: Delkevic Sport Exhaust Muffler Kit Fitting Guide kzbin.info/www/bejne/larcp4mXj7CUjLs&ab_channel=DelkevicExhausts