Unlock Your Bike's Power: Rear Suspension Upgrade

[@gekolizzard]

As always a quality “how to”. Nice work.

[@tinks43]

Always worth an upgrade, well demonstrated as always. Happy new year to you all!

[@MotoMirius]

Happy new year! And thanks as always!

[@rolan2dr]

Btw you really helped me out when I lost a piece of brake master cylinder one time. Thank you 👏🏻

[@MotoMirius]

Glad I could help and great stuff in sorting it!

[@marioedrozo1589]

Hello I just recently came across your videos and they’ve been incredibly helpful! I wanted to ask if you’d have any recommendations on getting my 2022 390 duke to pop wheelies , I know the new models can out of the dealer but mine has a slightly smaller displacement, if there’s any modifications you can recommend it’d be greatly appreciated!

[@MotoMirius]

Using power to make a wheelie is not the best or safest way to do it, so I recommend this video to show you the correct way to do it. Good luck and be brave! kzbin.info/www/bejne/bovVg4Z9a9GipqMsi=z3YHsSwkrDPflPUV

[@mohnishism]

Hi! Excellent video. Any idea if the new adventure 390 has softer monoshocks then duke 390 of 2019, maybe second gen. I wanted a more comfortable ride on roads.

[@MotoMirius]

I would imagine that the Adventure has a longer rear shock which would be an issue. This shock can be rebuilt so it would be possible to change the spring.

[@DeepThinkingSadness]

Always helpful sir ❤❤❤

[@MotoMirius]

Always welcome, thanks

[@chimmy7785]

hey mate did you get round to doing that sparkplug change video?

[@MotoMirius]

Ha! Thanks. There are a couple of videos that I knew I needed to do but hadn't got a note of - thanks for the reminder on that one, it has been bugging me.

[@chimmy7785]

@@MotoMirius No worries mate, funnily enough my duke service light come on so itll be handy to watch that before hand haha

[@pangtundure]

What the part number on this ? Is this the same one available on adv 390 ?? Edit : For the 200, can i use the one from adv 390 or duke 390 ??

[@shonith91]

Have you tried installing the shock upside down? I have a feeling it may fit if it does then you dont have to grind the rib on old gen models.

[@MotoMirius]

Doesn't fit, it is an easy job to file our grind out the web on that side so that you can access it with a screwdriver.

[@osamaaijaz4055]

Hi David, You have got off-road tyres out there with the new swing arms.. did I miss something?

[@MotoMirius]

Yeah, I'm a bit behind with videos as you may have noticed. I aim to catch you guys up soon - I'm just working out some ideas at the moment.

[@anok4u296]

i’ve just got myself a WP apex rear shock off a husky 401 for my Duke, instead of hacking the original swing arm to enable adjustment would a 2023 390 duke swing arm fit my 2018 model year?

[@MotoMirius]

As mentioned in the video I'm running a 2021 401 swinging arm in my 2017 Duke. The only part that changed was the swinging arm, so I see no reason why you would have issues. If you want to be absolutely sure then check the part numbers for the wheel, axle and swinging arm bolt etc - if they are the same for 2018 and 2023 then they will fit.

[@shonith91]

Can you please share the part number for the shock?

[@MotoMirius]

According the parts fiche it is 01585T32. I would recommend that you confirm before ordering.

[@theyellowjello5883]

Hello instead of lifting the bike and let the rear hang can I just remove the rear wheel?

[@MotoMirius]

You will need to lift the bike in order to remove the back wheel. To remove this there can be no weight on the suspension.

[@paulhills9167]

Hi David, I've just brought a duke 390, what mods do you recommend just to make it run better etc. I'm 40 so the face down ass you break neck speeds are not what I'm after, just happy with it sitting at the speed limit comfortably

[@MotoMirius]

Hi, ah just a youngster then! To be honest, the stock bike sits just fine at the speed limit. I've been doing some regular runs along the motorway recently so I'm running a 42 on the rear which just drops the revs a bit at 70 and helps my fuel economy since that is where my setup starts to dump fuel into the engine. Biggest mistake people make is to try and plod along in low revs - engine was not designed for that, so while you can alter the fuelling to make it better, best course is just not to do it - typically if I'm below 4k revs it's because I'm waiting at a junction. But the FuelX Lite will improve low speed running for most people because it's a bit over lean because of emissions. Otherwise mods are mostly personal preference on sound levels etc.

[@jisoopark5021]

I recommend swapping the oem spark plug for iridium, sorted out the frequent stalling issue on my 390 ADV. The copper electrode on the OEM plug had mostly gone by 9k miles and the gap was 1.4mm!

[@DeepThinkingSadness]

Sir does this fit with 2019 duke 390?

[@MotoMirius]

Yes, your Duke is the same as the one you saw it fitted to in the video, which is a 2017. You will need to slightly modify the ribs on your swinging arm mount as I showed in the video - you can use a file to do this if you don't have anything else. You could get away with a small bent screwdriver which you can buy but easier just to make a small adjustment.

[@DeepThinkingSadness]

​@@MotoMiriushi sir I didn't notice this reply 😅 till now yeah it fits perfectly and also I need to do something about that screw . Thank you .

[@rolan2dr]

How many miles does your bike have? I want to get the Duke 390 2024 and I have a 2020 390 Adventure which is not as fun to ride as regular Duke.

[@MotoMirius]

My bike is mostly used for short trips so it's only about 10k. Really depends what you want from a bike. 2024 Duke looks interesting, adventure is a different beast for a different purpose.

[@ipostuplenie]

I would defenetly throw away a progressive spring on a rear shock...

[@MotoMirius]

I don't remember the last time I saw a road bike that didn't come from the factory with a progressive spring.

[@AlaapHasan]

I have a first gen 2012 duke thinking of changing up the suspension with the gen 3 suspension on the 390 What would you recommend as a direct fit Or will i have ro make alterations?

[@MotoMirius]

If you mean the new 2024 Duke by gen 3, then no - the rear shock is very different and as far as I know will not fit.

[@AlaapHasan]

@@MotoMirius yeah meant the gen 3 one Rear shock looks dope but also looked like it has a different construction Thanks man Still on my quest for a beginner upgrade so i may tune up

[@MotoMirius]

@@AlaapHasan Some people refer to the BS6 as the gen3 and the 2024 as the gen4, so always worth double checking! Good luck.

[@AlaapHasan]

@@MotoMirius I’m still looking for lighter wheels and disc breaks for the first edition duke Along with tunable suspension If anyone has suggestions Id love to take some

[@MotoMirius]

@@AlaapHasan Inserts are normally the answer for the gen1 forks - Andreani for example. You can buy adjustable shocks, say from Nitron who can set them up for your weight.

[@dujeklanac1639]

Hey what are some mods i can do to my ktm duke 125 to get more power, i decided nkt to go whit difrent sprocket because it is not big difrence but i will be getting pigiback and air filter what shoud i do more, thanks in advance

[@MotoMirius]

It's difficult to generate more power with the 125 because it is such a small engine - even a 50% power increase doesn't make a huge difference in the real world. The best recommendation I can give is to invest into getting the larger engine version unless you cannot do that because you are age restricted. The most effective difference is the one you don't want to do which is to put a larger sprocket on the back - this helps to overcome the lack of torque made by the small engine - so this would be the starting point.

[@dujeklanac1639]

@@MotoMirius well i cant go biger for 2 years bc of the law but i consider buying some bike bigger in a year so dont know is it worth it

[@MotoMirius]

It is a really difficult position to be in. I wouldn't spend too much money on the bike because the performance upgrades won't do a lot for the money - but consider the bigger rear sprocket. Invest instead in becoming a better rider so you can maximise what you can get out of the bike and so you can breeze through the tests once you are old enough@@dujeklanac1639

[@dujeklanac1639]

@@MotoMirius hey i decided to do all mods, so i am.buying: full sistem exaughst, air filter, pigyback acu, biger sprocket and new cahain but how mutch bigger sprocket do i put? Original one is 45t and i was looking at 48, what do you think whitch one to put and what chain do i need? And are ghere any more mods to do? Thanks buddy you alwais answer

[@MotoMirius]

I would do the mods then see if you want a bigger sprocket. If you do then I'd suggest trying a 48. You will need a longer chain - likely 114-116 links but typically the next size up if often 120 and you just remove the links you don't need. @@dujeklanac1639

[@zever84]

Sir does this fit to a 2013 1st gen model?

[@MotoMirius]

I can't gaurantee that it does. Gen1 and Gen2 use different shocks. I think it will fit, but as I've not tested it, I can't guarantee.