It's refreshing to watch someone who gives absolutely no fucks about monetization and makes informative, well put together videos with scientific explanations to clarify everything. Cheers, mate.

dang, that was the most clear and concise explanation I've heard. excellent job sir!

Wrapped mine for looks. Never knew there was any other benefit. Loved the scientific explanation.

At first I was like “What?” Then I was like “huh!” And at the end I was ready to teach a class on the mechanics of exhaust systems. Well done sir, well done.

Clear, concise, informative and without the extra bullshit nobody ever asks for. Great vid

There is a 4th reason to do exhaust wraps - thermal control. I have an air cooled dirt bike where the header pipe is very close to the cylinder body and the carb bowl. Instead of making heat shields, a good wrap helped cut down the radiant heat soaking the bowl - and maybe helped keep a little heat out of the cylinder itself. It also helps with keeping my right leg from roasting, so bonus!

I am mechanic who fitted the exhaust wrap for customer bikes, now I can explain the reason. Thank you

because it covers a multitude of sins and rust

Best explanation so far.. scientific, but simple as well.. now, I don’t hesitate to wrap my motorcycle exhaust.. Thanks, Man...👍🏼👍🏼

*Pro Tip:* Before wrapping your headers, scuff them up, prime them with high temp primer, then paint them with high temp paint. This will protect them from moisture/corrosion.

My dad bought me that exact shirt back when i was in the 5th grade.

Wow just watch this as I am investigating wrapping my 1997 Kawasaki VN800 after converting to a bobber and wanted to understand the pro's and con's and watched other vids but yours was excellently presented easy to understand well done.

I wrapped the pipes on my scooter so I don't burn my leg

My thunderheaders are ceramic coated but still required shields to keep from frying my right leg. After a few years I removed the shields and wrapped them. I prefer the look and reduction of labor when I don't have to fool around with the shields. To those that worry about corrosion just don't let the wrap stay wet on the pipes any longer than needed. They dry out quickly with minimal steam production once the engine is running. Been running wrap for years now. Glad to hear that it helped performance a small bit. Thanks for the clear explanation.

This appears on my recommendations since weeks. Now that I opened it finally I hope youtube is being satisfied at last and stops recommending it to me.

By far, this was the most beneficial video on that matter. Would be great if other "explained" videos are done the same way!

omg you literally replied to every question in the comment. you are a good man

I enjoyed the exhaust scavenging explanation. You must be a scientist or engineer - much appreciated!

Thank you for boosting my confidence, I feel more intelligent, of greater interest, my looks improved, my speech ability stronger and my dress sense sharper than before, thank you.

Most comprehensive review of exhaust wrap

Reason most people wrap... Dented pipes! 😂🔰

Thanks Matt the only guy that did it that I have asked was on a v twin cruiser and he said it was to avoid burning his leg. I used to see a lot of two strokes with home made race pipes at club races and they were invariably black and metal. Didn't know it caused corrosion, thanks.

You're a cluey fella. Keep up the videos, perhaps one where you pull apart different 2stroke japanese power valves and explain each. I really enjoyed the Kx series.

Great video Matt, this series of Bike TEch is really good.

Thanks for such clear and precise explanation. I just bought my first 125cc and the previous owner had wrap around the exhaust. Made me curious about its puepose.

Going to wrap the exhausts on my Guzzi great explanation think it would look good on my V9 Bobber is it best to overlap by half or a third if sumone could reply ide be most grateful .😀

I had exhaust wrap on my 125, I painted the exhaust with VHT paint first and cured that, then I applied the wrap, after a very wet and horrible year I removed the wrap as it started to go white from heat and found my exhaust looked just as good as when I painted it. I think a lot of people forget to paint or protect the metal, as said the wrap will hold water when not running and so on.

I like the looks of the wrap and I think it's more appropriate for me than the ceramic, I do ride it on dirt/mud and rocks, so the protection is the most important for me.

Excellent video for those considering pros and cons of wrapping exhaust.

Hey Matt... probably a stupid question but, what about ceramic coating and wrapping? I ask cause I like the performance and anti corrosion aspect of the ceramic but wonder if the wrap would be good for protecting me and my gear from burns and in cars heat soaking the engine bay. Cheers

I just subscribed after watching a few vids, very knowledgeable and easy to understand and easy to listen to....well done....

P.S some RC boats with 2 strokes have water cooled exhausts some use a wrap. For an engine with crazy porting and a narrow power band presumably the wrap is too stop the pipe from detuning?

Quick one, do you damage your exhaust in some way with exhaust wrap ? (Long term use)

What effect would wrapping have on the sound/noise level on a n open (absorbing type ) silencer if any. BTW I like your new format

Just to toss in my 2 cents, in car applications it does a good job of keeping the temp down under the bonnet. I put in on my MG's header for this purpose. Also the protection from burns factor if I am adjusting carbs while the engine is hot.

on my husq 510 i just did a double layer 25 cm long next to my leg. no change in performance but now i dont cook myself when im stopped at a traffic light... 3 years later and i havent had any problems

Tbh I like the wraps on bobbers and didn’t know the purpose of them until now, thank you and now I might wrap mine when I build my bobber

Finally! I'm going to do the heat wrap. Awesome video man!

Clear explanation. Bon exposé, très professionnel !

Hi Matt, Is there a measurable difference to radiating heat on components near exhausts between exhaust wrap and ceramic coating? I am building a turbo bike at the moment and trying to decide what method is better at saving components near the exhaust.

Thanks for posting this useful video. I have a RE continental gt 535cc and was thinking about wrapping the exhaust mainly for enhancing my bike's looks. Would it effect the fuel efficiency and or has any other disadvantages apart from what you mentioned? Thanks in advance

Great video. Do exhaust reverson cones work?

Great video, i'm gonna mummify my exhaust it looks badass!

I wonder if the protection is as good or better than shields. Does the wrap keep the heat in the pipe and feel cooler on the legs than the shield ?? Thank you for your generous consideration, Sincerely ........................

I had a problem with wire harness melting from exhaust heat and the wrap did the trick. I did the exhaust with wrap and used spark plug heat shielding (same make as the wrap) and works great. The intake manifold stays cool as well witch doesn't help fuel milage but improves torque for when you have to hall 1000 pounds of tractor, rider, and equipment up steep hills👍

Really great video. I did wondered why people wrapped exhaust other than for looks. A brilliant explanation. I have to say I do like the look of exhaust wrap.

Excellent explanation thank you sir.

Done a wrap once on a Yamaha XT225 I had but just on the first portion of the exaust. It looked awesome and people thought I had modified the engine somewhat (which I hadn't). The plus side for me was that it eliminated the heat around my right foot which in a hot country like Brazil, it's a big gain. Cheers and excellent video mate! Can't stress this enough. Love your work.

Very Very well said

Thank you for the informative video that isn’t filled with bullshit blah blah, theatrics and annoying music. There are people who look into KZfaq for information and testing, or even instructions on how to use a product or want to know their experiences using it and the down sides. Sir, you have delivered, enough said....

It's been a while since you've done this video. Did you wrap and unwrap an exhaust, and make a film of it?

Always the best place to come for genuine practical info! What do you think about using this to reduce the average coolant temp on my R1? I’m conscious that the headers are really close to the radiator and it does run hot…. Failing that is it worth using it around the underseat exhaust pipes to cool me arse down?

Is there any great risk to keeping the exhaust gases hotter for long as far as the engine goes? Are the cylinders likely to get hotter and could it potenially damage internal parts?

you rocked it on the explanation buddy!

Would be a nice video for your bike tech series (exhaust flow). You say faster exhaust flow = better. But what about low rpm torque etc. My bandit has great top-end power without baffle but runs very rough at idle/low rpm. With baffle it's much better low but worse on top. Valve overlap, pressure waves..eetc?

Very well done, love the white board support

Wrapped today my RoyalEnfield look awesome

Amazing video, i got a question in my mind and I need to ask. Is the wrap changing something about the sound which is going out from the exhaust?

Exhaust scavenging 101. Thus why small header opening and exhaust getting bigger towards end to help speeds and hopefully create small vacuum before intake opens. Heat shields may work in some cases to block heat. My 360 has wrap so i don't burn my leg. Great video.

Awesome tutorial/explanation for folks like us Matt. Nice one. Ride safe mate.

Great explanation! But what happens if I wrap my 2 stroke exhaust with it?

I have a Triumph GT sprint which puts out a lot of heat from behind the fairings. I wonder if the heat wraps would nullify some of the heat to make it worth it?

Great for remote turbo setups on cars, keep that gas hot and spools faster, same with turbo blankets.

Here in Vegas it never rains so maybe nice here. I could see how on the coast with high humidity and frequent moisture that it could ruin pipes over time. Long live the Vegas riders!

Brilliant vid mate, glad I found this chanel

loved the explanation mate!

Excellent video! Very informative.

Does it benefits from engine heat

what will a trumpet shaped exhaust do to the scavenging?

My pipes on my 2012 HD Fatboy lo burns the inside of my upper right thigh during the warmer months. I ONLY want to wrap the part that is near my upper right thigh. If I only wrap [and spray] that 8-9 inch part of the exhaust from the header down, will it hurt to NOT wrap BOTH pipes? Again, this is not for power or looks, just for protecting my upper right thigh and the bottom of my right saddlebag [over the top muffler]. What would you suggest?

Clear and well presented. Thanks.

A little off topic, but if you're wrapping exhaust on a car would an added benefit be reducing under hood temp and therefor increased power from a cooler air intake charge? or would the difference be negligible? Thanks

Excellent description...could you continue the explanation about speed of the sound wave/efficiency of scavenging, with respect to other aspects of the exhaust...mainly the impact on scavenging of removing or downsizing the cat, and the impact of pipe diameter? That’s the age old problem many people try to solve to increase power (along with tuning the length of the exhaust). As it’s possible to buy E marked cats that are much smaller than OEM, and which fit inside the diameter of the header pipe, it’d be interesting to know the impact of removal or downsizing on scavenging : )

I was waiting to hear you mention something about tuning after a wrap, because i would think the engineers knew there was 10% exhaust gasses left and if you change that ratio by wrapping, wouldn't you need to re-jet or at least adjust air-fuel mix accordingly ?

Thanks for the explanation! Great presentation.

great video matt! well said.

Very well explained. Thank you

wonderful vid dude, I don't know if I want to do it now? never thought of the water retention thing before.

Very well detailed explanations! Thx u

Very well explained. I had a 500cc Scooter where the frame would get incredibly hot in summer on long rides. Suddenly you would loose power and had to wait for it to cool down again. I found out that the exhaust was heating the frame and the frame heated the ignition coil. Wrapped the exhaust and the problem went away.

Did you ever do the exzost wrap? And the 6 months later takeoff? If so can you give the links?

Very good explanation and subbed.

Will wrapping the exhaust hurt or change the chrome finish on the pipes for if you may want to remove it one day?

Another good reason for exhaust wraps in this day and age is that the catalytic converter is more efficient at higher temperatures, so you want the exhaust gases delivered to the cat to be maintained to (as far as I remember) about 375 degrees C.

A wrapped exhaust system may have more back pressure due to the fact that the exhaust gases remain hot longer. As the gases cool, the exhaust gas contracts, flowing more freely out the pipe. Exhaust pipes on turbo systems are rarely wrapped because it causes too much heat to be retained in the exhaust system, causing the turbocharger center section bearing to fail or the oil to coke up.

Hello, after wraping the exhaust.. does it cause any issues if motocycle goes for wash?

Great video. I'm doing a ground up rebuild on my Vstar after laying it down and exhaust decision was in the air.. Gonna wrap for looks and I don't wanna drop half a K on some new V & H shortpipes ATM. Plus that whole cruiser with hot melty pipes thing does suck..

So in turn of the insulation of the pipe, does it make it louder?

I late for the party but im thinking of getting wraps for my Triumph street twin and im worried it could change the pipes over while being under the wraps specially after months or years. Would the wraps change the physical state of my pipes under wraps?

Would wrapping my pipes prevent from burning my leg again? My calf tends to lean on the exhaust pipe while riding.

Beautifully said thank you

This was super helpful, thanks pal.

My gran suffers from chilblains. She often wears surgical stockings during a cold snap. Would there be any benefit to wrapping her legs from say September onwards? Also, would you recommend binding each leg in the same direction or should you alternate ie. one leg clockwise the other leg anticlockwise, like you do with racer handlebars? We live in the northern hemisphere, but below Barnsley, if this makes a difference. One last question. I went to a classic bike show in Cleckheaton last Sunday and there was a man selling a device that uses magnets to improve fuel consumption by realigning the electrons or something like that. They obviously work or else he wouldn't be selling them for £40. My gran has some magnetic ankle bands for her circulation but she said they did nothing. Would it be possible to repurpose them to make a fuel conditioner, and if so, could you do one of those 'how to' videos, (without any swearing) in case my gran watches it?

Excellent explanation

So no problem if I apply it on a expansion chamber of a 2 stroke??

I'm planning to wrap my xmax 300 scooter cause the exhaust pipe produce so much heat that it could warm up my bottle water in it, does it have any bad effect?

Points taken Sir..thanks for the thought..Cheers..

I have one qus.?? Is the exhaust going to get rust after removing it? Coz i got wrap it today,, I'm worried bout it ..if it get rust??

Awsome vid man! Great explanation, keep it up!

How about if you ceramic coat for corrosion protection then wrap for the look??