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Post Info TOPIC: yz125... road legal?!


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RE: yz125... road legal?!
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Aprilia RS 125





Make Model

Aprilia RS 125
Year

1999-00
Engine

Liquid cooled, two-stroke, single cylinder
Capacity

125
Bore x Stroke 54 x 54.5mm
Compression Ratio 12.5:1
Induction

Dell'Orto PHBH 28 BD
Ignition / Starting

Electronic with fixed spark advance CDI /
Max Power

34 hp- 24.8 kW @ 11250 rpm
Max Torque

20 Nm @ 10000 rpm
Transmission / Drive

6 Speed / chain
Front Suspension

40mm Inverted forks in high tensile steel. 120 mm wheel travel.
Rear Suspension

Swinging fork with two asymmetric arms in Aluminium fusion with thin-walled monocoque. Single hydraulic shock absorber. 120mm wheel travel
Front Brakes

Single 320mm disc 4 piston caliper
Rear Brakes

Single 220mm disc 1 piston caliper
Front Tyre

110/70-17
Rear Tyre

150/60-17
Dry-Weight

114 kg
Fuel Capacity

14. Litres
Consumption average

21.2 km/lit
Standing ¼ Mile

19.0 sec
Top Speed

120.4 km/h



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The Leviathan Project



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Disclaimer lol. I'm not saying they're 15 bhp lol. No way in hell. But its not 40bhp either.



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DTR Legend

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Every exc owner has said this and from the ktm dealerships it's supposed to be 42@crank and 36-38@wheel, sounds about right tbh, seen a few dyno vids when they're nearly due for a new piston and even worn out they were still putting out low 30's @wheel which is impressive on the dyno sheet.

And yeah like i said he's spent that on the head insert exhaust system and sm setup and brakes. The older ktms aren't as specced out as the newer ones his was an older one so needed some cash throwing at it, explains it all tbh. The newer ones come with the ktm power exhaust as standard so the only benefit for changing the exhaust is sound/looks more than performance unless like him you had a restricted pipe, as ktm have a partnership with fmf anyway so most of their newer performance exhausts as stock are made by fmf.



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DTR Legend

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And yeah defo not 15 hahaha, but for sure mid to late 30's @ the wheel which is what counts, and i'd stick by 42 at the crank, not that it matters lark :)



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I'm sticking to my guns on this one and saying doubtful. You're telling me that my full blown mx YZ125 has less power out the factory than a road bike. Doubtful. Very doubtful.

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Nah around the same! And the exc is an enduro bike so basically an mx bike with longer gearing etc :D yz 125s push like 40bhp anyway? Trust me man i'm a ktm 125 exc addict i love them :D



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Calum122 wrote:

But those 170 kits are poo scrim! They are absolutely shìte! And the re is the slowest of the dts going. The cdi makes them totally restricted and what not. You can't compare what i said to a dtre. Nevs bike is not a dtre. Its a belgarda tzr/dtr which out the factory are claimed 30bhp. Then hes bored it out to 140cc with powervalve and 4dl cdi and 38mm carb. You can't tell me his dt wouldn't at least keep up with a ktm let alone smash it.

Just saying cause i've seen lots of exc's and am not totally impressed. Never seen nevs bike but read up a lot about his setup and they're suppose to be ruthless.

Nevs spent lots of money on powdercoating and body work. But engine work alone will be much less than what that chavey paid for his ktm.


 Calum the 170 kits might be not very good but they do give a lot more torque and not much more speed. The RE/X is a good engine the cdi is fully derestricted in seconds with the wire from the clocks earthed it takes the rev limiter out and the things will pull really well with a derestricted decatted exhaust, better than the 99 till 03,s thats for sure.

I can say it probably wont touch one especially with the TZR,s tall gearbox internals the KTM will be gone before it gets out of second gear, 4DL cdi,s make very little difference at all really even compared to a 3NC off an early DTR I have 2 4DL cdis and a TZR125R head in my garage now and have run DT125R,s with them before,not with the TZR topend though ive even run them with 3ET 200 cdi,s. The carb will make the most difference set up correctly thats for sure. 

I cant see where you could spend £1500 on a 125EXC motor, the chav is probably full of s**t and just trying to impress his mates.



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Thank you scrim! hehehehehe! Yeah exactly, he's spent that on the head insert, wheel conversion and exhaust if anything like i said, no other performance mods.

A good ktm/tm/hm/kl/cr/fc will do 0-60 in 5 secs and 0-100 in 25-28 secs :D



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Check this out a newer KTM rapid as fook check how fast that tyre gets burnt, RAPID!



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Wire is earthed to the battery. Bike only revs up to 10k rpm no two ways about it. Derestricted everything else. Even spoke to Mick abbey and he asked what bike i intended to run it on he said i wouldn't even bother. Said that my cdi is so restricted that it would be pointless. All the work done to the cylinder would be wasted.

Now why would a salesman tell me not to spend money at his shop unless there was a possibility that i would be disappointed with the results and thus bad feedback.

And from what are read they are ever so slightly detuned mx bikes. YZ's are roughly 34bhp. So the exc would be 30+ 33bhp. The same claim that the rs makes. Struggling to see how that makes them rs killers. Yes in a straight line the exc is of course going to beat an rs. But the world wasn't made in straightlines. There are corners to think about. And ultimately the rs has the upper hand in a straightline due to its aerodynamics.

The rs is also slightly heavier. But all this could be the difference and undone by a petite female rider riding the rs and a heavyish bloke.

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DTR Mechanic

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Cause there 40 hp, they are not a road bike they are full blown competition bikes that you can ride on the road like energized says. New 2stroke cross country and enduro KTM,s come with a cat in the exhaust. I removed mine from my 2011 250XC they day I got it and fitted it with an FMF fatty or I would have had to of chopped it open as it was s**t slow from the shop. Some KTM dealers replace them for you with a cat free exhaust some dont.

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Nah the KTM would kill any RS on a straight and on the twistys no two ways about it. More power, shorter gear box, Weighs a lot less. Check that vid i just posted man wink



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Don't get me wrong i know who KTM are. I know they're stupidly quick bikes. And amazing bit of kit. I'm just discussing their EXC's. from what i've seen they're nothing to shout about. I am aware that ones have seen must be absolutely limping though. You gotta believe me. I'm sure if you saw what i saw you'd say the same. Cause from where i was sitting it was all blow no go.

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Someone is telling you porkys Calum, and the tuning mush just probably carnt be arsed with a DT topend abit like Stan Stephens these days so they just f**k you of.

Standard DT revving to 10 grand **** me thats derestricted, hold it to 12 in the first few gears and see how long it lasts lol...............

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Probably on their last legs thrashed in to the ground, restricted exhaust, poor maintenance (boxing) haha! But trust me dude they're a whole lot to shout about, amazing styling, amazing quality, amazing performance, light, perfect handling. The teen dream 125 :) the exc's and the other bikes i've named obviously are something to shout about or all the italiano boyos would ask mummy and daddy to get them an rs instead, being italian aswell?! Haha :P They're rapid rapid rapidooooo! Super fast! The best bike ever <3



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Mine revs to 12,700 clocked at max rpm scrim hahahaha! Think mine must be the highest revving DT hahahaha.



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Yeah thats rapid lmao! That ped at the end as well lol.

But still the video could have been sped up. The shaking of the hands. Whats the matter with him. Early signs of parkinsons ir summit.

It's going to have to be a see it to believe it. I don't ride my rs very often since its got to mot or tax atm. But if it did i'd be out all day looking for these RS killers.

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KTM iz well batty

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scrimsmustang wrote:

Someone is telling you porkys Calum, and the tuning mush just probably carnt be arsed with a DT topend abit like Stan Stephens these days so they just f**k you of.

Standard DT revving to 10 grand **** me thats derestricted, hold it to 12 in the first few gears and see how long it lasts lol...............


 Mer. Can't do that. Would kill me taking it that high. I'm going out in a sec and i'll have a look. just this once i'll rev the **** out of it in the first few gears and have a look. But it sixth it'll only go to about 10k. Just shy. It's not restricted. Do I look like a complete tool? I'm fairly competent lmao. 



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Hahahahahha yes mate trust me! They're twin turbo'd! Nah but ever since i got the chance to ride a brand new one in Spain a few years back i was hooked, they're ****ing amazing and seriously as quick as in any of those vids, trust me dude! I do like rs's aswell as my mate had an amazing one, new shape super sexy matt black paint job, full polini kit 38mm kehlin blabla it was rapid, but compared to the ktm just wasn't quite rapid enough hehehe!



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Hahahahaha! Cal you pussy! Pin her wide open in EVERY gear! I do on a daily basis, she loves it! nearly 13k rpm BRAAAAAAAAAAAAAP



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Thats purely down to, like you said, gearing.

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Energized wrote:

Hahahahaha! Cal you pussy! Pin her wide open in EVERY gear! I do on a daily basis, she loves it! nearly 13k rpm BRAAAAAAAAAAAAAP


 Yeah but your bike is probably not on its last legs. Engine wise it wouldn't surprise me if the engine gives out. Poor thing seriously wants a top end overhaul. 



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Pffft do it man i have a fresh top end here waiting to be fitted just trying get my use out of this one first then i'll whack her on haha! Gonna try the heat cycle thing too, cba running it in for 500 miles.



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Energized wrote:

Probably on their last legs thrashed in to the ground, restricted exhaust, poor maintenance (boxing) haha! But trust me dude they're a whole lot to shout about, amazing styling, amazing quality, amazing performance, light, perfect handling. The teen dream 125 :) the exc's and the other bikes i've named obviously are something to shout about or all the italiano boyos would ask mummy and daddy to get them an rs instead, being italian aswell?! Haha :P They're rapid rapid rapidooooo! Super fast! The best bike ever <3


 Did you just have a wet dream over a KTM whilst typing that?

 

And my maintenance is fine you twit!



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Yeah sorry you're right. It does hit 12'000. Revs all the way up. Was doing it in 2nd though. Didn't try any other gears cause i can't see how it'll know wht gear its in lol.

Also did a bit of riding. And i'll agree with you. If it is what you say it is then the exc must be a rs killer. If its a full blown mx'er for the road then it just has to be doesn't it. Know two ways about it.

And i was riding my dt (now supermoto) and thinking yeah it would be nice to have insane power behind this. And therefore the exc would be a really nice bike to own new. Dream bike. I can agree with you. I'm just a dt fan boy and rs fan boy cause i've owned them both. Thats not a bad thing. I'm sure anything i own i'll testify to the death.

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DTR Mechanic

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The things are not making power over 10,000 rpm anyway your just killing the things for no reason dont matter if its a DT a KTM or an RS. I ride a KTM when I do enduros or go greenlaning as they are one of the best things you can get I wouldnt dream of supermotoing it but everyone to there own " I should say I used to as I have not ridden mine for over a year now " that is about to change in the next 2 months though I hope. I have a DT for sentimental reasons as I had them when I was a teenager and always had a soft spot for them, I love to see all the modified ones that people do on here. Anyway we have our bikes because we like them just some are better than other and thats just a fact time passes by and things just get better.........

Just to stick another spanner in the works, the Husaberg TE125 is apparently the one to have these days ...... :) But they are KTM,s anyway lol...................

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Yeah seen those but they're even rarer to get over here than KTM's even though they are a re-styled KTM lol......



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