Derestrict The Aprilia RS125 - Full Power 2 Stroke Powervalve

Following official Aprilia notes for derestricting the RS125!
Comparison ride video coming soon.
The mountain incident: • Near Death For The Apr...
The Facebook page: / unrestrictedisle
Instagram: @unrestrictedisle

[@bb-ballistics1706]

Great content. Having 4 different aprilia 125's over ten years it's about time someone made this video.

[@seshelbow336]

One day in 1996, at the time a proud 16 yr old owner of an AR50, i was having a little wander around the local car dealers forecourt......having always had a thing for remembering numbers.....i noticed a sign in the window of a 'Rover Metro', priced at £2900......"you can own this car for only £20 per week !"......i thought even i could afford that on paper round and dog walking money.....not that i wanted or could drive a Metro. A few days later, going past the showroom, i notice what looks like a Brand new Aprilia RS125 Chesterfield Max Biaggi rep in the front window of this local car showroom......priced at £2900.....and being into bikes i pulled in for a look. so i'm in this showroom drooling over this bike.....It has 400 miles, is P reg, which in the new reg only 2 months old max.....and looks just as brand new close up as it should. The salesman (was a small garage owned by 2 brothers, who i'd spoke to loads of times being local and a big car fan) cant remember which brother it was, but he came over and started telling me he had taken it in part ex....against the Metro id seen a few days before, and had no idea about it or what it was worth....I knew brand new they were £4300 and there was a decent wait....we chatted for a while.....me dreaming about owning it....but knowing there was no way....then all of a sudden a thought popped into my head..... I said to the guy.....see that metro that was outside last week....for £2900....It had a sign in the window saying i could own it for £20 a week.....see this bike for £2900? could i own that for £20 a week? he said how old are you? im 16. He said if you can get your dad to come in and sign a piece of paper you can have it for £20 a week.......i was on the AR50 flying home as fast as i could. I'm not sure how, but my dad was easily convinced (as long as he could use it too).....so i dragged him to the garage. Got there, and apparently some bike dealer from miles away was trying to buy it, and offering a lot more, but coz he knew me and saw how much i wanted it he said if we promised him we wanted it we could have it........needless to say, 20 mins later 16 yr old me is driving my new 12hp RS125 home. The guy gave us the paperwork, and a plastic bag with a thing in it with masking tape on that said 'Rave Valve'. So me and me dad are at home looking thru the paperwork, and find the Rave valve fitting instructions.....apparently if we take out 2 bolts.....fit the thing in the bag.....and plug it in....we go from 12bhp to 33bhp.......we werent supposed to do it til 500 miles.....but were at over 400 miles so just went for it....quick test drive up the local dual carriageway showed a 110mph top end....hardest 3 months of my life waiting to turn 17 to ride it....put 4000 miles on it and sold it for more than i paid

[@simo9713]

you oriented the blade of the powervalve wrong. the chamfered part goes to the other side, so when its opened it sits flush with the exaust port wall.

[@maxpaine30591]

What a 🍩

[@davetrousers]

orientated

[@filip_bercik]

@@davetrousers who cares?

[@simongershenson284]

Yup I saw that

[@bishoymikheal]

One of the better tutorials for the rs 125 I have seen, good stuff

[@UnrestrictedIsle]

Glad to hear that! Thanks for watching 😁

[@magnumllama400]

@@UnrestrictedIsle where did you find tha Manual

[@neilhigh129]

Deserves a like just for the detail 👍

[@Quickdraw_Punslinger]

My favourite intro yet.

[@ventisette.]

Get a 34mm carb in there mate

[@lio8la]

What size main jet, idle jet and choke? How ypur needle is set up?

[@funnyfudgeman16]

Awesome guide. Thanks 👍

[@damodaraomalley3974]

Great vid, would be nice to see a before and after test ride

[@daneayers7483]

Hey mate thanks for the video it was very informative and well shot could see everything perfectly 👍 I have a 2002 Aprilia with a modified cdi and the valve installed. It was a track bike but I'm trying to get it road registered again. The start was interesting I'm just wondering where you got the actual Aprilia rs125 documentation from as I'd like to read it and see what parts etc that Aprilia recommends to use for De restriction. Please 😁

[@craigmarshall6682]

Rave valve fitted the Australian way mate ! Never saw any further comments !

[@shahridz]

Valve blade is positioned at the wrong side up.. check the manual again mate.. nonetheless, good effort on the video tutorial.. 👍😁

[@mariuscut9492]

If u know doesn’t matter to put the secondary ecu 7800?

[@shahridz]

@@mariuscut9492 I dont get your question.

[@mariuscut9492]

@@shahridz aprilia have 2 ecu, first is on the video this guy do it a hole, and for full power is a second ecu named 7800ducati and that means the 7800 ecu open the power valve at 7800 rpm

[@Benadamsevo]

An updated Video is needed now the mountain section !!

[@UnrestrictedIsle]

It’s coming 😁

[@helseth96]

This is exactly what ive been lookin for!! Thank you very much,! Greetings from norway!! Did you get a red warning light in the dashboard after drilling the cdi? I would apresheate updatevideos on how she runs😁😁

[@UnrestrictedIsle]

Fantastic to hear 😁 hello! We did have a warning light before we got the power valve. There isn’t one now though. Battery was charged and fresh fuel in, its running (will be seen in my next track bike video) Waiting on some better weather and it’ll have an update 😁

[@flagman9000]

If you install a 34 mm carb then you will get a red EFI light as there is no place to attach the TPS (throttle position sensor) onto the new 34 carb from the 28 carb (the TPS attached to top of old carb via the loom) and the CDI wonders what's going on so throws up a red light. Take the whole top part (black plastic) from the top of old 28 carb and ensure this is attached to the loom/cable as it was before and cable tie this to the frame. My light went out but have noticed that it does come on if I rev it to 11k. The TPS has no function and was an emissions thing so will not affect the bike if its not properly attached to anything once you have installed the 34 carb nor will you have any issues if you just leave the red light on other than its annoying. So to summarise with the old 28 carb set up you had a cable running off the loom and connecting to a plastic part on the top of 28 carb. Remove this from the 28 carb when you take the 28 carb out and tie it to frame then install the 34 carb.

[@mariuscut9492]

@@flagman9000 you can cut a wire from ecu and the error go out 👌🏼

[@gabriel4825]

@@mariuscut9492 Hey what wire do you need to cut?

[@ninja12lawbreaker]

I may be buying my daughter a '57 plate very low mileage RS. Great video thanks

[@mariuscut9492]

Nice guide ✌🏼✌🏼✌🏼. We don’t need the secondary ecu 7800? Only to unblock the original ecu?

[@dippydazzler5013]

Alright Fella. Good Video. I take it from the de-restricting your better half has passed her test and is now running round on R plates.

[@UnrestrictedIsle]

I’m still convincing her to get something big and green 🦆💨

[@davespooney8472]

Omg so it seized when restricted? Shit. Look forward to the reactions with double the power and full rev range 👍

[@bishoymikheal]

true that doesn't happen often lol

[@UnrestrictedIsle]

A rider that didn’t understand how to ride a 2t didn’t help 🙋‍♂️😬

[@davespooney8472]

Having watched the video it’s definitely iffy fuelling, sure you could have prevented it but it shouldn’t have seized from that ride.

[@flanno9]

@@davespooney8472 . the cylinder would of overheated causing the seize. that carb is a nightmare to jet at sea level. let alone going up and over the mountain. from stock it was set to run rich on idle, and lean on full power. (to keep the CAT happy in exhaust. (EURO3). from memory it has a main jet (132 0r 135), which was very lean. (i now use 170 @sealvl) then you have that blocked snorkel on airbox and the exhaust blanking plate, blocking 3/4 of exhaust port. and the BR8 sparkplug runs a lot hotter than the BR10;)

[@trianedtogo7793]

@@flanno9 them aprilia jets are miles out what come with the aprilia full power sheet 170 is just wright hardest carb I have ever jetted

[@flanno9]

@unrestricted isle. the powervalve blade goes in chamfered edge down mate. to line up with exhaust port. ;)

[@flanno9]

you have the blade in the housing correct. but housing is upside down. :). if you want to set correct setting for blade. take exhaust back off. then shine torch up through exhaust port, you will see blade. have your assitant pull solinoid all the way in, and you watch blade. you want the blade to line up fully open with port (chamfered edge will be flush). then set cable from their. then check when assitant releases solinoid. otherwise the blade can hit piston, plus blade stem, or cables are forever snapping.

[@flanno9]

also the drilled ecu helps but its still crap midrange. get a zeeltronic programmable ecu. even at its stock settings it makes it a different bike. plus you really need the dellorto VHSB 34mm carb. as that VHST (28mm) is a proper pain to jet correcly. (it says use a 185 main jet in official guide. but i used a 170. and it still was never right.) the zeeltronics £250 form thetuningworks and the carbs £180ish (dellorto uk or ebay) ;)

[@UnrestrictedIsle]

A man with knowledge! Thankyou, I’ll look into it 😁

[@flanno9]

@Robin D. Rich Hello mate. Right here goes: 40 Slide. K57 Needle. 266DP-Atomiser. 160/165 Main. 40 Idle-(Emulsion Tube). 60 Choke Jet. 300 Float Valve. 12630.1 Float. ;)

[@flanno9]

@Robin D. Rich i have something on my laptop that can help you. Give me a couple days to dig out the correct info, and i will post a link here. And your more than wecome. ;)

[@richardbentham382]

Hi pal, geat vidoes. Just bought one for my lad. where did you get the plastics from and what was the quality like for fitment ? Thanks

[@goldnaigx]

Hi, My powrvalve opens and closes only at low rev. Above 8000 rpm It opens but closes immediately. Could It Be the hole in the ECU is too small?

[@niklasdanielyu2894]

I have a aprilia rs125 2008 model I cant find the loom connector that connects to the solenoid cable and I cant find any pic or video or anything on the internet plz help!!

[@stefanopenrhyn1677]

Thanks bro!! How much in total would this upgrade cost?

[@redlinerichard77]

7:22 hahaha used to do that with mine

[@WARYZ]

Same xDD

[@t8283287]

What's the purpose of drilling the ecu??

[@liam-lh2nm]

Bought a stock 09 today going to get money together and derestrict it

[@madejkamm1389]

My RS has a AC 34 cdi, do I need to drill it?

[@Os.-]

..and the battery is dead - yup :) Good vid and +1 for assistant

[@UnrestrictedIsle]

She’s not a bad apprentice 😜

[@iainwallington474]

What does drilling the control unit do

[@BOB-gu5qf]

If the bike is de-restricted without doing this mod to the cdi, there will be a FLAT spot at around 6k revs. Even the older bikes needed this done but in a slightly different way. I think it works by letting the ignition timing advance more in the higher revs.

[@danejdobersek9340]

Hi i have 2012 rs125.. is ecu already programmed for rave valve or do i need to change ecu ? i dont know if the 2012 model is the same as yours i very appreciate your help

[@UnrestrictedIsle]

2012 should be good to go, no extra controller needed

[@danejdobersek9340]

@@UnrestrictedIsle thx man i ordered the parts :D

[@prodromosk5401]

So you need to buy the power valve? I thought that was on the bike and the only think you had to do was to drill the ecu. Do the older rotax 122 models have one or you need to buy it?

[@flanno9]

some older models have the blanking plate too. it depends what model and where you buy it from. the original rs's came with the power/exhaust valve and the 34mm carb too. them bikes was pushing nearly 34bhp. most of the restrictions placed (as well as power), was to meet eu. emmission laws. (euro3/4/5 ect). hence why you hardly see anymore 2 strokers being made. as their too expensive. that RS what deresticted isle has was over 5k (uk pounds) when released here in uk. :/ (while a decent 600cc supersport, was around 6k)

[@BOB-gu5qf]

If you don't have the power valve blade then you can modify the existing blank so that the exhaust port is fully open all the time. No solenoid, cable or valve needed. check out my rs125 if you want to see this mod in action👍

[@jakobdale9031]

Do you have a list of all the parts you used

[@4YouWHOyou]

Can you give me link into official manual that you was based on ?

[@MotoObiektywni]

Can You show before and after how it works?

[@UnrestrictedIsle]

If I can convince Becky to let me take it over the mountain again, yes 😂

[@mr.speedyboib.s4589]

What carb woulb be on thre then?? is it the 28mm??

[@gmindgjerd]

Good one. Very informative. Could i not just remove some of the blank? I realise it would be in one position, but flow would be less restricted? Thank you brother.

[@UnrestrictedIsle]

You could, it would help the top end but you would lose a bit down the bottom. A bit of a restriction is good for low down torque, where as high flow is good for peak power. I believe it’s quite common for track bikes to have it wide open as they are always in the high RPM and it means there’s one less thing to potentially break

[@UnrestrictedIsle]

@NoNoNiin “Track bikes don’t have it open” “It will stay open” Come again? 🙂

[@thedogfather-yu2ob]

Did you not need to change the cdi?

[@martinkumanov492]

how much fuel the engine consumes per 100 kilometers

[@jazzyb521]

how do you remove the rear seat on a 2002 model thats an extrema/spains no.1?

[@mariuscut9492]

Under the rear seat are 2 screws, you take out that screws ✌🏼

[@seshelbow336]

I had a 96 and the rave valve just plugged right in

[@jnen05]

I know you posted this 3 years ago but do you have a list of things i need to buy to derestrict it?

[@UnrestrictedIsle]

Pause at 1:50 for aprilias list But it’s basically the race controller, cable, powervalve blade and housing Exhaust Jets

[@jewelgrenades8072]

Good video, however im confused about the carb bit, i'll need a few jets and an exhaust? what exactly am i meant to do with this parts list.

[@UnrestrictedIsle]

I’m sure we can clear it up 😁 The parts (except the powervalve) are all replacements, so will go in place of whatever is already fitted. Have you done any work with carburettors before?

[@jewelgrenades8072]

No i have no clue i want to derestrict my bike because my mechanic wont do it for me it wont go past 7000 rpm, everything else im pretty confident i can do i just have no clue on the carb settings lol

[@jewelgrenades8072]

Should i just take the parts list to my mechanic with my carb?

[@UnrestrictedIsle]

JewelGrenades changing jets is really easy, you’ll be able to do it if you can do the rest - although this bike still passed 7KRPM while restricted, you may have another issue going on

[@jewelgrenades8072]

I hope not i recently bought the bike 2days ago,its been dry stored & Hasn't been ridden/Started i 5 yrs so it could just need a run in, when in neutral it revs all the way up i just got back after ridding it to m.o.t it would not go past 7000rpm it loses power so i have to shift up so i thought it could be restricted see.

[@harryoliver6650]

Where did you buy the power valve kit from? Good video

[@UnrestrictedIsle]

PJME .co.uk

[@andyarchie2010]

Hi great video I'm leaving alot about the 125 ..I have a rsv ..but grown up with 2 t....this is my first 2t..I have a 2008 rs125 now..piston seized clutch seized..basically the engine is fucked..I got the bike for 350..it needs a completely rebuild..any tips would be very helpful..no idea once I split the engine I'm OK before that but gear box..I'm stuck ..please help

[@UnrestrictedIsle]

I’d say take lots of pictures, and lay bits out in the order they came out - go steady and you’ll be fine. Getting stuck in is the best way to learn 😁

[@Mt24855]

Good luck getting parts lol I scrapped mine at 16 back in 2007ish because stripped the gears and the breakers yard had 5 or 6 all with the same problem

[@bluerider5410]

how many thousands of revolutions do you reach if the turnover reaches 14 thousand rpm ??

[@user-mo1is9pw4j]

is changing the exhaust a must or can it be derestricted while having the stock exhaust?

[@UnrestrictedIsle]

If it has a cat in then it’s a must

[@vogtlandheli]

whats is with the carb jets they also must be changed otherwise you kill your engine

[@UnrestrictedIsle]

1:48 They’re in the list

[@robertdebon7239]

Do you think by just disconnecting the powervalve I can restrict the bike again? (have to take it to the inspection and dont want to fail it).

[@UnrestrictedIsle]

Would it be dyno’d at inspection? Drilled ecu and no powervalve might give some dodgy emissions

[@robertdebon7239]

@@UnrestrictedIsle Yea, it would. But im thinking of getting it inspected somewhere else, where its not such a big deal if its not derestricted.

[@seshelbow336]

the power valve when shut i dont think is quite as shut as the blanking plate.....i think even closed the power valve makes more hp than blanking plate....but very similar

[@robread6290]

You put the blade in upside down 🤣

[@flanno9]

@Unrestricted Isle. Did you ever finish the bike mate?

[@UnrestrictedIsle]

We did, unfortunately due to insurance and tax issues it’s just sat in the shed for a while I took it up the road but Becky won’t ride it until the sun comes back out 😂

[@flanno9]

@@UnrestrictedIsle thanks for reply dude ;)

[@Robin-zp7in]

Is it ok to use br10eix

[@tomosarmy]

Does it work on rs125 2001?

[@tanhy1522]

I like this bike but I like the rs4 design. Can the rs4 the 3 headlight fix on this bike?

[@UnrestrictedIsle]

With enough work anything can fit 😁

[@cadjet37]

What does drilling the CDI unit actually do?

[@oihdnuoc679]

It activates the Power Valve. Basically without the drill your power valvie wont move, but with it it does.

[@oihdnuoc679]

5:42 Which is acutally the wrong way. Found it out today. lol

[@arekimienadzri5020]

So the stock rs125 don't have power valve?

[@UnrestrictedIsle]

Nope, just the blank in there

[@przemekdworzynski8362]

@@UnrestrictedIsle RD version doesn't have :D. If you have a RM you got it from the production date. Good vids, please record more of these type videos. Greets form Poland!

[@BOB-gu5qf]

I modified my PV blade so the powervalve is fully open all the time & the bike runs awesome. Wheelies for fun when it comes on the pipe. The control solenoid & cable are also gone for less weight👍

[@stevedegryse4568]

@@BOB-gu5qf any tips how to?

[@mojaviex6470]

why you can't just cut the original valve?

[@pat_mc_fly]

what does full power mean for this RS type? 24/25 hp`?

[@UnrestrictedIsle]

28ish

[@mitre0070]

Year of this bike?

[@liam-lh2nm]

I’ve installed the power valve but it doesn’t open do I need to drill the cdi to make it work?

[@UnrestrictedIsle]

I think the CDI drilling changes an electronic restriction - unsure if it is linked to power valve operation. How do you know it isn’t opening?

[@liam-lh2nm]

@@UnrestrictedIsle I lifted the tank up reved it up to 7k and no movement whatsoever from the solenoid the solenoid is brand new everything power valve related is new from factory but no movement. I want the cdi mod anyway so I’ll do that hopefully it sorts it I’ll update you on that if it does

[@liam-lh2nm]

@@UnrestrictedIsle if it doesn’t work and my bikes got a faulty loom for the connector I’ll get the rave power valve and sell the solenoid one

[@liam-lh2nm]

@@UnrestrictedIsle I have good pull still like before from the restricted 15hp as that’s not bad but I was hoping I would get a working valve as it cost me 330quid

[@iainwallington474]

Where can I see the Aprilia notes ?

[@UnrestrictedIsle]

www.scribd.com/doc/8522656/Rs125-Race-De-restrict-an-aprilia-rs-125-2006-Euro-3

[@iainwallington474]

@@UnrestrictedIsle thanks so much for your help

[@danielgecev7016]

Why does mine have like a rev limiter after 8rpm when I give it full gas?

[@jordanhoney8447]

Daniel Gecev same but mines 6rpm

[@ventisette.]

Daniel Gecev because it is restricted

[@MrMIDDLEKID]

@@ventisette. mine is restricted but still revs to12,000 or whatever max is

[@quincey6661]

Can you de restrict a RS4 125 ? Mine is well slow

[@UnrestrictedIsle]

It’ll be limited to make it learner legal A tuner should be blue to map it, removing the timing restriction and increasing RPM It won’t be a massive difference and will technically void your insurance Honestly I’d save your money and get your licence sorted - a 125 will never be quick

[@quincey6661]

@@UnrestrictedIsle Thanks mate !

[@kanecarroll1973]

What’s the significance of drilling the ecu?

[@UnrestrictedIsle]

It removes an emissions restriction

[@t8283287]

​@@UnrestrictedIsle how??

[@UnrestrictedIsle]

@@t8283287 it breaks a connection on the circuit board - effectively flipping a switch to say go full power

[@mathiaswaardal4382]

Anyone try the rave 2? (the mechanical powervalve that opens via exhaust gasses) I’m on a low budget, it’s cheaper and the reviews aren’t bad (though there are few). I’m still kind of worried about buying it because it says you have to drill a hole in the cylinder. Anyone have any experience?

[@Andreas-oq7go]

I dont know if u still wondering about this, but the rave 2 valve works like a dream and super easy to tune! It really makes the bike alive :)

[@mathiaswaardal4382]

@@Andreas-oq7go Thanks alot, hope you don’t mind me asking, what kinds of mods are necessary for a full power bike? I see forums where people tell you to replace the entire axhaust system and some where you just drill the tune, install a valve and get a new carb. What’s really necessary in your opinion for a full power aprilia? mines a 2006 btw

[@Andreas-oq7go]

@@mathiaswaardal4382 Np, in my bike I got a arrow expansion chamber, rave 2 valve, unrestricted cdi and original 28mm carb. I think about getting the 34, but the 28 works pretty good:)

[@Andreas-oq7go]

So in my opinion a rave 2 valve, derestrict cdi and new exhaust is all u need. And some bigger jets in the carb. Maybe upgrade to a 34 later on :)

[@mathiaswaardal4382]

@@Andreas-oq7go Thank you, so a new axhaust is nessecary then? Also, some say you need a new spark plug after the cdi

[@andreas1983x2]

But that's only one part of it, isn't it? Carburettor with nozzles + exhaust is also missing.

[@UnrestrictedIsle]

1:01 😁 gianelli decat on. Exhaust jets were done as mentioned

[@msrx08]

Ehi man, you mounted the valve in the wrong way, the facing must be down not up.

[@Mt24855]

Mine went pretty good with just an exhaust i never bothered with power valves and carb changes. All this extra work only puts more strain on an already fragile engine not to mention the gearboxes are made of glass

[@UnrestrictedIsle]

It made a massive difference - the bikes are very much designed to be this way. They are neutered to meet legal requirements for learner bikes 😁

[@Mt24855]

@@UnrestrictedIsle yeah I know had one years ago you didn't even need a CBT, I tried to get insurance on one recently and they didn't wanna no lol think they've caught onto this trick

[@Mt24855]

@@UnrestrictedIsle you wouldn't have any idea about the new mt125s?

[@UnrestrictedIsle]

@@Mt24855 in standard trim they’re fairly restricted for emissions and the learner limit. Exhaust and a remap make a good chunk of difference 😁

[@Mt24855]

@@UnrestrictedIsle IV been looking at those, is it just as simple as swapping ECUs?

[@charliecarsboult1692]

Is there a link to the parts ?

[@UnrestrictedIsle]

Unfortunately not, had to buy from a few places

[@charliecarsboult1692]

@@UnrestrictedIsle oh right no worries looking to do this to my sx 125 p picked up last night struggling to find the parts

[@MrKdr500]

you put the powervalve blade in upside down.....

[@anthonysacselli4541]

Habla en español hombre !! Que somos muchos !!! O por lo menos deja la traducción automatica tendrias mas oyentes 😀

[@andreagiagnorio5775]

We italians know how to do our staff.....

[@kennethwilkinson2095]

Except spell.

[@andreagiagnorio5775]

@wink1980 Cool know build fast bikes/cars

[@trianedtogo7793]

Anyone in UK want a power valve system I get one 50 pds

[@stevedegryse4568]

yeah m8, i want it. If you send it to Ypres

[@KillahDT]

the rave is mounted wrong

[@Devonian-gg7gr]

Dont put your pv in that way pleaseeeee. Needs to be turned 180

[@UnrestrictedIsle]

It has been corrected 😁

[@trianedtogo7793]

All the aprilia jets are no good too rich for the 28 vhst

[@supplyanddemand4625]

What jet would you recommend for the full power and the vhs28 carb.

[@benjahajdarovic8275]

Excelent, video. Short and on point, also fun :) link of the manual docgo.net/info-doc.html?

[@qwaso8453]

show it in action

[@UnrestrictedIsle]

Bike is long gone

[@emilsmorozs6473]

@@UnrestrictedIsle good bike not gonna lie, i actually want to buy one soon, as im getting 16 in november, but in our local site theres only 1 125 2stroke😔 and i really hope noone will buy it so i could😅

[@UnrestrictedIsle]

@@emilsmorozs6473 could you not get it before and have it waiting?

[@emilsmorozs6473]

@@UnrestrictedIsle i need to sell my rieju mrt 50 but noone will buy it when winter is coming

[@emilsmorozs6473]

@@UnrestrictedIsle its great idea, but here end of october is the end of season and you cant do driving exams unfortunately