Harley Touring 2-1 Exhaust Comparison - Dyno Runs & Review 

School in session..thank you for sharing your time. This was a good video explaining the how and whys. Keep up the good work!!!

Outstanding video as this took a lot of time and effort on your part. I have owned nothing but D$D on all four of my bikes. I've never been disappointed.

Love my D&D, pipes a beast. Sounds amazing too.

Excellent Video! This is by far the best Dyno tune video on the WEB.

Good video. Can’t wait to see the cam shoot out and the 2-1-2 shootout.

helpful video, I'm struggling with a pipe to put on my dyna 103 with S&S 551 cams and your 2 into 1 comparison was very helpful since I'm just learning to read the graphs. You simply have to look a the curve. Thanks

Great video as usual! Got the sidewinder when it first came out for my M8 Roadglide. In my opinion worst sounding pipe on a M8 I had ever heard. Even called S&S to ask if they even tested the sound before releasing it. They didnt have an answer for me. Called a few times and was told someone would call me back. Never got a call. Also at the time they didnt sell replacement end caps for example if you scraped it. Sold it as soon as I could.

Great video, thanks for putting the work in!! Any insight to Sidewinder race ready numbers?

You guys rocked it,this is probably the best side by side comparison test I've seen,Great job, I'm looking into Bassani 2 into 1,could you test that pipe for a M8,thanks

My pro pipe graph on my 124 looks exactly like yours. Peaks at 2800 with 142 torque and dips down to 140 and stays there till about 5000 rpm. It is a great pipe and sounds awesome!

Great job! For the$ I like the s&s without cat and decibel reducer

Thanks U guys are awesome and confirmed my thoughts and the power numbers and their range… also what about the old school Thunder header, and your thoughts on this shatkrosd 2 into 1

What a GREAT video! I wish someone would have done this 10 years ago. I would have saved allot of $$$ and time. Instead I had to learn this lesson the HARD way.

I'd have loved to see the stock config on a graph just to see. Do you guys have a video like this for a TC96? Also didn't mention which M8 you were testing?

Could you show the difference between a Bassani and TBR since they seem to be two big players in the 2:1 systems on either the Twin Cam or M8 engines, and also the best Torque making 2:2 systems. Would be great to see, cheers.

Not surprised at all by how much the cat exhaust robbed the power. This is a great video; it helped me out as i'm looking for something that looks different than what everybody else has but still want it to run right. The video showed me what I had already heard about the Razer. Im looking at the freedom and also wondering if anyone has seen anything on the Trask assault 2inta 1 for Touring . My 2017 Streetglide is going through a transformation and I am trying to get it right. I sure like the Yaffee Cult 45 Collector but cant find one now. They were made by Vance and hines but not tested by vance and hines. Anybody got any dyno runs with the trask or Yaffee? Thanks for the video

Wow this is an awesome video thank you love the pro pipe but can’t afford it at the moment !!!

Great video would like to see bassini and thunderheader. Really impressed with RCX. I’m wondering what the difference might be on twin cams

Great video. Do you have any dyno data on the Khrome Werks products?

Have you tested the new x series thunder header, with same S&S camshaft?

Great video. If you had to boil it down to the best all round system, which is it? Thank You.

has anyone done these tests with the 475c cam ? it would be nice to see what a 2-1 will do with the torque dip in a HP cam.

Have you all done any dyno run looks at the Trask Assault 2 into 1? If so, any comparisons? Especially interested in compared to the RCX.

When testing the V&H Propipe, which baffle was used and how much difference/variance will that cause based on backpressure? Also, I live at altitude, avg riding is 5800' above sea level. Is there a tuner that will compensate or do I just dyno-tune and call it good?

Thank you for the nuts n bolts up front.

Any testing done with the Thunderheader?

The S&S pipe numbers are incorrect. Hp and torque always cross at 5252.

Wicked video. Very explanatory I’d be keen to know how the Supertrapp 2-1 supermeg 20 discs and open end cap, would perform in comparison. I interested because I had my 107” TC put out 129hp/114tq. Then when I had it taken to 117” TC ( same pipe same dyno and tuner)put out 129hp/125tq. I was expecting more of both from the 117” and wonder if the Supertrapp is restrictive in any way. On a side note, interesting to see I did A Dyno run with a set of V&H bigshot staggered while it was an107” and I lost 10hp.cheers always enjoy your videos. 🌑👊

Would like to see the thunderheader x series

Hey I like the specs on that RCX 2-1 your using but when I follow the link it just goes to their homepage. Do you have more info on it like a mode number or anything I could reference their site with or to ask them what their comparable today is that they have?

In your video you mention one of the pipes coming with two baffles a competition and a quieter baffle. Which pipe was that?

Is this setup making more power than the 2-1-2 setup? like your typical tormentors headers with a slipon on your other videos? I’m surprised it’s making this much power without the back pressure everybody says the m8 motor needs

Need to see the graph

If you guys could do the same thing for the most popular headpipes that would be awesome. S&s power tune, rcx tormentor, Vance and Hines, fuel Moto jackpot, and bassani true duals. I'd love to see that shootout

Can you do a 103 or 110 twin cam test please?

Question... '17 roadglide ultra, having the stage 4 128 kit installed, currently have RCX 4.5 inch mufflers and headpipe WITHOUT cat. Im looking for your opinion, roll with this setup or a suggested alternate. Thank you for your insight.

Mike, thanks for the video. I've always run 2-1's on my previous TC's, but there isn't a ton of objective feedback on them for the M8. I've been eyeing the Non Catalyst Sidewinder, mostly because I think it'll be a quieter 2-1 compared to others. In your opinion, would the Non Cat Sidewinder be comparable power-wise to the RCX while also a bit quieter? I know the S&S has the decibel killer, but I have never heard one in person. I just assume it's quieter. Again, thanks for the video. You guys' reviews are great.

Can you explain why the tests for S&S do not appear correct? The torque and HP should always cross at 5252 RPM.

Link to website says 09-16 on all rcx 2 into 1 options, no 17-20?

So which one do you recommend

Corbra el Diablo 2 in to 1 any info on it

Fab28 2into 1 and the TBR 2into 1for the 114 m8?

What IS the industry average?

Did you dyno the stock exhaust to establish a baseline?

The rcx sounds great,does it some what have that harley sound,i got cfr megaphones and I think it sounds like a Subaru lol,I be looking you up for rcx

On the chart for the S&S Sidewinder pipe, why don't the torque/hp lines intersect @ 5252 rpm like they're supposed to???

Tricky one because SS says you don't loose performance with the cat, dunno who or what to beleive anymore

I'd like to see the dyno on rhe 2 into 1 Cobras, long length and turnouts.

Unrelated, but what seat is on that bike?

That D&D would walk every single other pipe and the Vance and Hines pro Pipe would be a close second.

Would be interesting to see the stats on a true dual system. Just to see how far off it is

I see some torque curves don't even start till 2,300 rpm while others are around 100 ft. lbs. at 2,000 rpm. I'm all about low end torque, what rpm would I be engaging the clutch from an initial launch? I don't have a tach on my current bike.

Can you do this on 2 into 1 into 2? With the most common mufflers? Or have you done this before?

Have you ever compared the RCX 2 into 1 vs fuel Moto 2 into 1 road & track ?

How would these results change if tuned with wideband O2 sensors.

Just got the sidewinder, hopefully without the catalytic converter since it was $120 or so cheaper than the "49-state" version. Can't wait to test it! Got the Arlen Ness monster sucker on and already got bigger cams in. Once I get her bored out and dyno tuned my buddies will always be in the mirror :)

How about a Fuel Moto RTX 2:1

So put pretty much any exhaust on and it will be excellent.

how do these compare to rinehart stepped pipe true duals?

I don't quite understand why 2 to 1 setups are higher performance than slip ons for example. Unless it has to do with back pressure. Anyways I got some cobra power pro hp 2 to 1s for my v star opting for performance over that slip on sound and they sound pretty good. Got them from your website.

So the RCX 2-1 are no longer available?

Didn’t hear. Did u use any tuner.

What about krome works 😮

Why no ghost pipe for the RCX?

Your lines intersect early on the S&S graphs. Like at 4,300. Why?

Video starts at @5:20 1.5X

Congratulations on a VERY informative video! All you dunderheads, take notice. Nobody wants to hear you rev your bike. Have you tested the new x series Thunderheader,?

I wish this guy would just shut up and get to the point