I'm 68, been riding since 1977. These two Gentlemen are awesome and their videos never waste your time. Thanks Guys!

Thanks for the video. I just ordered a breather system from you guys and I am looking forward to installing it. My bike is a 2019 Street Glide Special. I ordered some extra black hose clamps to aide in keeping my blacked out theme. Great videos and I am a new subscriber. Keep the awesome videos coming. P.S. I went with a catch-can.

Had the external filter on my Road Glide along with the 828 for 2 years now and love them both!

Thank you for your Honesty.

Just found this channel. Great content!

Thanks for this video. I now have the external breather installed in my bike. I chose the filter. I drilled the holes and installed the brass hose connectors into my SE Chisel air cleaner. I routed the hose up over the throttle body, under the tank, and over to the plastic shelf behind the right side cover. The filter sits in a small rubber made bowl. After a few hundred miles, I inspected it and logged some more miles after adding some sea foam to the tank and spraying some B-12 throttle body and carb cleaner into the throttle body. It's very gratifying to find the air filter dry as bone without any oil contamination. I checked the Breather Filter again and it was wet with a bit of oil in the bowl. A quick clean up and she is good to go again. I may end up getting the catch can but it all depends on how well the filter set up works. So far I'm a happy Harley Rider. Thanks again

i have the Catch-Can on my 01Road King. On the bike for around 700 miles so far so good not much in the can yet just a lil oily but the carb is staying clean and its not going in my engine. just FYI when new the fins on my Catch-Can were very sharp and easily cut my hand when I tried to open it the first time. And it just looks awesome...

I’ve got the breather filter installed on my 03 Heritage Softail and it runs amazing with the fresh air,no more garbage being blown back into the throttle body,simple to do

You Two guys are awesome always great videos

DK parts are awesome and they work.

I ran the hose to the chain and my rear wheel is well lubricated according to the dirt on it!

Well done.

Thanks for the video. I just ordered a breather set from you guys and am looking forward to installing it. My bike is a 2013 Fatboy with about 13k km (so, only about 8k miles). I’m wondering if any carbon that may have built up might eventually burn off, or do you think I need to consider mechanical or chemical solutions? I don’t have any noticeable tuning issues at the moment.

Thank You

First I just want to say you guys are the best when it comes to custom builds, more experience and knowledge than anyone else IMO and you share that with the world. My question is what are your opinions on running the hose near the chain? Would you suggest using a filter if my goal is to lubricate the chain?

I ride a 2018 Road King standard with the 107 M8. She has a stage 2 with a Fueling 465 cam, Bassani Road Rage exhaust and an Arlen Ness Big Sucker air intake. She’s a spitter! I suspected she was, so when I installed a DK external breather system half way through the summer, I installed it with 2 cans, hanging a can off of each cylinder out in the open just behind and below the air filter. They are out in the open easy to get at. I have to empty them every 600-800 miles. But I don’t mind because servicing the cans is a simple process. The crap that comes out of these is just amazing and I’m glad I’m not running it through the bike anymore. Why is she a spitter?......From an earlier video, I knew not to overfill the oil and I always run at or below the half way mark on the dipstick. I suspect the oil pump. She has an OEM pump that’s 1st or 2nd generation for the M8s. Harley is now on generation 4. To me, it’s just not worth it to put in a new pump because she’s never had a wet sumping issue where I’ve had a loss of power. In summary, I really like and recommend this product. Whether you buy the can or the filter depends on your installation. Mine’s right out in the open and the can looks good. If I did more of a hidden installation I probably consider the filter.

Back in the 70s used to run vent over to the drive chain, right where it came out of tranny. Dripped on the chain keep it lubed, relieving C.P. in the process.

Both, kind of... On my 98 Softail I run the breather bolt hoses to each end of a tee and from the middle leg I run that hose to another tee orientated so the side leg getting the hose from the breather nuts is horizontal. The inline ones on each end are now vertical, I run the bottom hose down to the bottom of the bike with a plug in it. The other end pointing up goes to a little filter. The bottom leg acts as a "catch can" and allows the air to go up and out the filter. My 91 FL is bottom breather EVO, that one I put a small actual catch can with a filter off that. She is getting older and the check valve in the pump will let about a tablespoon get by after a couple weeks. The can catches it all nice and neat, do not have that problem with the 98. The 74 ironhead is a whole different story...

thanks for your video. you both do a good job. do you have a video on how & where to hook up the hoses and what all i need. i have a 2002 softail. thanks much for any help

I have been running the catch can on my 2017 RGU for almost 15k miles. Yes, I noticed a difference from day one.

Thank you for this informative video. this answers many questions i had in my mind. just got myself a buell and planning to do the breather mod.

DK! I'm sold on one! I have to have it!

Helpful video, ive got a small 105cc big bored cub *yamaha townmate* and because the crankcase is still small 50cc at prolonged high revs it just pukes out oil everywhere all over the center stand so i ordered a oil cap with a breather hole to add a second pressure releif point so if that dont fix it the oil catch can it is.. 🙏

Great video. Thanks for sharing.

Thanks for your time guys, I appreciate your help and your products. On my 06 Flhpi with a tc88 , how do you add an external breather with a big sucker air cleaner? The backing plate has two slots for the factory breather hoses that sit under the air filter, when relocating the breather hoses from the factory breather bolts to the y connector it leaves the two channels empty to let un filtered air in to the throttle body. Basically it looks like I need to use some type of filler to close them off or is there a different backing plate that doesn't have the gaps ? I appreciate any help you can give? I have a 06 RK flhpi TC88 w/ Delphi injection I have the basic A. N. Big sucker kit . Am using factory breather bolts with the nipple on them and 1/4 hose routed behind the plate and over the frame. Haven't finished the install yet and haven't heard back from A. N. About it. Probably because they don't think you need an external breather with they're A.C. setup?

I'm in favor of venting my trans top plate (DIY) , adding a check or pvc valve and a catch can to relieve the pressure/oil mist heading into the intake.

I did the filter option on my 07 Softy when I went to 110ci, clean it every oil change

Running your filter set up hanging under my AC, while I like the concept it does throw alot if gunk down the side of my '09 UC. Thinking of ordering a catch can or just getting a 'T' & more hose & placing it under the frame.

I had a 4 cylinder Suzuki with just a hose. My wife always complained that after a ride I smelled like gas or oil. I made a catch can, and that issue went away.

hey fellas i just ordered a breather system for my 2014 low rider. i decided on the filter instead of the catch can. my question is if the filter starts to fill up with oil, will the oil come out eventually through the filter? or just build up in the filter? i prefer it just come out instead of building up in there. thank you for the great products. i had ordered a catch can for more road glide and loved it by the way.

I have a catchcan with a breather filter on a bracket I made hanging on my road bar down in front of my oil cooler

My old man had one of these fords, I believe it was a 96. He let me and my brother drive it to school and I remember when we shut it off it would try restarting back up and act as if it was starving for fuel. Haven’t done no digging into it as it’s been sitting for years now. I’ll eventually be back wrenching it.

Could you do a video on an install on the hd heavy breather with a catch can for a twin cam

I have a 2016 dyna switchback with the HO 103, I get some seepage from both breather bolts onto the cylinders, not alot but enough to annoy me. Will this system fix the leaking completely?

not just a harley thing, recently installed a catch can to a yamaha fj1200 after spending hours cleaning that filthy airbox :D

Just made my arlin Ness filter vent out with a grinder and other air tools

I have a 22 LRS with a S & S stealth a/c. Shes a spitter. What product number should i use? I think i want to use a filter over catch can. I see a few thinks on your site....

I have a 2020 flhxs with a v&h cage fighter air cleaner which option on your web site would work best for me ?

Can this type of modification be done on a 2021 Honda CB500F? I just got the bike recently, pretty much brand new. It looks like there is a breather hose with a plug + clamp on the left side of the bike (which I’m assuming works like a catch can), but I don’t know if the bike is designed to recycle the oily hot blow-by gas back into the intake, or dispose of it into the tube.

I have an Arlen Ness big sucker that has the hoses going back into the air cleaner I don’t wish to change out the air cleaner all I want to do is redirect the oil into a catch can beneath the air cleaner what is your recommendations? My Arlen Ness big sucker is the large filter using the stock pier cleaner Cover.

I have a 08 Electra Glide Classic. I really want a catch can mount indiscreetly. Do you have a Air filter External breather system I can use the Stock air filter cover with ? Would that have negative results?

Wonder if any chain drive guys, route a hose directly over their chain, sure it probably wouldn't totally keep it lubed, maybe too much water to?

I have a 2014 Road King CVO after watching this video, I removed my Screaming Eagle air cleaner. It was full of oil. After looking closely at the engine breather bolts I'm not sure how it can be modified. The back plane has angled holes that lead to black spacer around my bolts to the heads. Can I replace my mounting hardware or drill a hole into them from the bottom and attach a hose, then tap and plug the back plane holes? Is there a kit for the CVO Screaming Eagle air cleaner?

I am a new 2021 HD Sportster owner, and do not want to replace the factory air cleaner at this time...but want to put this external breather on. Can it be done? Based on the look/feel of the factory air cleaner, it seems I'd have to drill a hole for the tee/hose to pass through, but am not 100% sure. Thoughts? I plan to order from you guys (would like a black catch can, but am not TOO picky). Much thanks in advance.

I love and want the black catch can breather kit, but the shipping cost of 71 to Netherlands is crazy.

I see from your pictures that on a 107 the catch can is attached next to the timer cover. What is it attached to ?

Here is my deal on my 21 street bob 114. I bought an aftermarket breather off of eBay. It is one that has the glass see through cover. There is no external breather. Instead the kit just caps it off completely. Is that bad? I did notice after only 10 miles of riding. The glass was covered in moisture. Water. Is it good to have the system blocked off like that?

Question when you add any kind of filter Will that not create a back pressure especially when the filter get slightly Plugged

Hi DK, I have a 2019 Street Glide with the SE 128ci stage 4 kit installed. They installed the new HD oil pump and since then, the bike burns oil (can smell it from time to time) and the filter/intake has oil inside. Even the spark plugs are dirty. She runs hot 🔥 320 to 340°F. Had to refill oil twice now in less than 2000 miles. I have the Trask Checkmate installed. I will install the Feuling oil pump and cam plate as soon as Michigan warms up a little, if the runout is good. Do you think, that a EBS will help with my issue? Or do you have an idea 💡 what could cause such an issue? Thank you in advance!!!

It's avaible for car too ? Cuz i own a turbo diesel car, and hesitate between catch can or just filter, any advices ?

On the filter any sediments when you wash it won't it just keep building up, like sludge plugging it up or is it all liquid that it catches

I have a 2020 Heritage Classic with the Screamin’ Eagle Round High-Flow Air Cleaner - Center Bolt which catch can system would fit my bike? I am getting blow by mostly when RPM's are high at highway speeds for longer runs.

I got 09 sportster 1200 custom i drilled 2 holes thru the air filter plate put 2 hoses to the vents thru the holes i drilled put a 3/8 TEE barley see my catch filter so far not one drip of oil mines right under the air filter

Two questions: What happens if the catch can fills and doesn't get emptied? Is their "noticeable/measurable" power change after installing either the catch can or filter?

I have a S&S stealth air cleaner n experiencing some oil visible at cleaner. Do you have parts for this cleaner and route it to catch can?

Any downside to running the hoses up above the air cleaner instead of below? I want to route the hose to the other side and going up will be easier. Not sure if the sitting oil there will increase backpressure too much or if it doesnt make a difference.

is it needed for a 2021 road glide special? 2021 and above have a difference oil pump.

i used a filter like the one in the video, no more hot dirty oil getting sucked into the TB and making carbon on the pistons and valves, my 16 RK runs better, also true duels, breeeeth much better.

Should I vent my dipstick as well as at the air cleaner? Or do I just need to vent at one location?

I have 08vtx1300c trying to create a vent port on rear cylinder covers are similar front ventilation port and rear stud which is solid aluminum is it agood thing to vent the rear cylinder similar to a harly motor from colorado Kevin Hill

Purchased the premium but went to an arlen ness monster sucker,just actually finished installing the barbs for the ebs All the other parts are usable

I vote for the cheapest solution….old school “vent to atmosphere” …. We don’t need no stinking filter/catch can😂

Good video is it bad to see small amounts of white smoke come out of the filter while starting sometimes more when hot

I want the breather setup without the filter or catch can. Do you offer that?

I used an in out catch can, filter on out side. What do you guys think of trask check m8

I am lost and have looked and tried everything I can find. I have a large amount of coolant leaking from my crank breather on my vtx 1800

I purchased a filter and placed it above the air cleaner. My only complaint is that I smell the oil now. I'm thinking about removing and replacing it with a can.

I used an old aluminum fuel filter and changed out the filter element with a small piece of sponge inside. Sponge soaks up most of the oily crap.

I used some braided hose and try to route it behind the exhaust to the catch can. Bad idea the hose touch the exhaust and the braids burned and left a burn mark on the exhaust. Lesson learned they are not head tolerant enough to touch the exhaust directly.

How will the filter do on rainy days?

I use the tiny filter on my TDI. Lol

mount your filters above your source and this will minimize the oil output. the vapor will escape as wanted and the majority of oil will run back down hose. the engine intake breather i just vent to the ground below frame with open hose. but i have very little blow-by. some of these aftermarket parts companys are making big $$$ on manufacturing venting parts, aka dipsticks and tranny plates. it's way easier than that. do your research. lots of info out there.

I got lucky and bought an 02 DYNA WIDE GLIDE W only 8k. On the clock. 88ci.Dyna. replaced the 16 " front wheel (still have a beautiful 16" for sale) with the stock 21". No leaks but for the u shaped hose atop the primary. The wind pushes up oil to the clutch cable adjuster. Minor deal but I hate parking at my bros house and finding drops. After bragging my bike doesn't Leak! How embarrassing. Only after a long hard ride. Any ideas guys? It's an 02 88ci.Dyna.

What about heavy breather system and vacuum? How do you do this and keep it in a vacuum state that’s needed?

How about the HPi alternative heavy breather

Which one is better

If i run the hoses up and over the engine instead of down, will the oil collect in the hoses and hinder the breathing of the engine?

Vented transmission cover to relieve pressure and lessen the amount that will make it to the intake in the first place…. Seems like we all should be doing both

I have had mine vented for years with custom tubing and fittings from jegs. Mine doesn't spray or mist out any oil any more at all really.

What about breather bolts? I have some from Lowbrow Customs and TC Bros that I've never had a problem with.

I put external breather bolts on my 2002 Fatboy barely anything comes out. Maybe a little get on the side of the bike.

In the automotive world (I'm a mechanic, but also a biker) we call it the Positive Crankcase Ventilation system (PCV for short) and generally on cars and trucks, any oil vapor coming thru the PCV is extremely minimal. It maybe amounts to a teaspoon every 10,000 miles. That said, I've personally installed a catch can on my Dodge Challenger. I digress. The PCV system that dumps back into the intake is required by law, as per the shitty EPA, to be a part of all vehicles produced now. Something worth noting is that crankcase ventilation is a vital part of ALL 4 stroke engines, but in the past, it used to vent to atmosphere instead of back into your intake. I've personally never known the issue too be as significant as it is on Harleys. To me, there's clearly a design flaw somewhere. There should not be that much oil coming out of the breather as it does on Harleys, M8's in particular and Twin Cams to a lesser extent.

I have a catch can from y'all i am having an issue with the bandeleros.

Catch can looks sharp.

does this violate the HD warranty?

Which is better a breather system or a vented dip stick other than price?

What is the part number for kit for M8

I'm considering it for my Road Glide but don't want to void the warranty. Will it shorten the engine life if I don't install this breather system?

i just bought the filter one from you for my trike after the rebuild of engine the pistons before rebuild carbon was really bad according to mechanic reason for rebuild on the 2018 flywheel bearings got destroyed reason unknown also oil pump was bad they said only thing they kept was the case for lower and heads everything else gone the only savior was it was under warranty still by some miracle. thanks for the products and videos for helpful tips

Bought it a few weeks ago with the catch can. I opened it up after 2 weeks of riding and the inside started rusting.

i would vent my pan & shovel wt a filter, never considered my twin-cam, tks.

What about water going into crankcase ?

how much will the catch can hold?

Why not a vented dip stick ??

Need a catch can how to order

Don't just run a hose! The oily deposit will attract dirt.....My situation: I put a catch can with a filter on, connected to my head breather hose, and clamped it to the left (primary) side front riser of my frame....Okay. When I checked/drained the can after a few hundred miles, there was a good amount of what looked like water, not oil, in the can. I collected it in a container, luckily. But I think this is from heated air that cooled and condensed. Anybody's thoughts?

Is there anyone that has info on the idea that the original configuration needs to be under vacume? And useing the breather config makes a free breathing type issue.. dunno? Just askin.

I have a HD SE air intake and DK Customs External Breather with Catch Can. The earlier version of your catch can. What’s the improvements with your new version?

Why not divert the blowby back to the oil reservoir?

Does an EBS void any warranties?