Restricted 660x
 

hi im new to the forum and am looking at buying a xt660x itsa 2008 model with no miles on the clock unregistered, ive just passed my test and am wondering what it would cope like with the 33bhp restriction im limited too, any help would be appriciated

Hi & Welcome to the Forum.:family:I've not ridden a restricted xt before, but when I came back to biking 8 or 9 years ago I bought a ER5 off a friend which was restricted. I rode that for a while restricted and it was fine. The main difference after derestricting was all top end. For general day to day stuff it wasn't much different. I would guess the xt would be very simular to that experience. Hope that helps. :ytiller:

the bloke at the dealer said all i would lose would be top end but was just unsure due to the fueling problems, they will give me the unrestricted ecu with the bike aswell so if it is unbearble then i could swap it back, but dont want to risk it really

tombzy

The restriction doesn't depend from the ECU it's a small plate that prevents the throttle cable to fully open up.

well according to the dealer its the ecu, which costs around 100 pounds, he said about the throttle cable but then found the restricted ecu in his parts list.

This is news to me, can you get the part number for me of the restricted ECU?

Chris has a restricted XTR and i,ve been out with him and it does not make a great deal of differance!!

thanks for teh info,will try and get the part number for you, will take a couple of days though as the dealer is a while away

Thanks Mate, I try to keep up todate with everything XT660 & am not aware of any restricted ECU.

These are all the ones listed on the parts catalog from 2004 to 2009.

http://www.xt660.com/showthread.php?t=8546

I had a restricted Honda deauville 650, it was fine really until you got to 5k revs then it just didnt rev any more, this wasnt too bad as 5k revs was the max torque. The only thing was the deauville was very very heavy so in windy conditions it was pretty dead, and for over takes it had to be very planned. Also if you wanted to go touring you had to pack light. I ended up taking it out for a 2wk touring trip to europe and it never went back in.

Normally a restrictor is either a stop on the throttle (which is what i thought the XT was) or a plate either in the air intake or in the exhaust pipe.

Never heard of an ECU one:100:

Nahhh mate, it's a... http://i144.photobucket.com/albums/r...Loadofboll.jpg

Hi there, I had to go through all of the hastle to get my bike restricted, here is what I found:

One Yamaha dealer I spoke to said they would fit the official Yamaha part, which consists of some kind of washer arrangements. They wanted �63 for the kit (part number: kit-xt660-25-kw), and around �55 for an hours labour. However they did not have the part in stock, and said the distributors said it would take around 3 weeks to get it........I was certainly NOT prepared to wait that long till I can ride this beast lol.


Other independent bike garages said that they would fit the fiinternational kit (part number 05-DM01-K25) as seen on the website: http://www.fiinternational.com
/ShowDetails.asp?name=XT660X&type=

The actual prices for the kit varied from garage to garage, from �150 through to the full price as shown on the website of �172.99, and each garage would charge an hours labour, so around �50.

The fiinternational kit is a metal bracket on the throttle slide on the gear selector side of your bike, preventing the throttle from being opened all the way up, pic to come in a bit....

So all in all, your dealer is talking rubbish as I rang around A LOT of places to find out what different choice of restriction I can get, and how much they cost. It will cost you around �200-�250 if you go down the throttle restrictor plate route, or about �120 if you go down the official yamaha washer route (although only one dealer told me about this route, at first I thought they had got it wrong but the part number they gave me seems to add up).

Hope this has helped!

Harry

Thanks Harry, this is the kit we are aware of & have seen been fitted a few times by restricted riders. I would make my own for those prices.

As for the ECU I have never heard of a restricked ECU & it is not listed in any parts catalog from 2004 to 2009 that I have.

I have a restricted XTZ, probably the only one around here.
My top speed is around 145-150km/h (havent got higher that 145 at 5500rpm)

I havent got it at full power yet, i will remove the restrictor in june (holiday in france :D)

Yes it is a horrendous price for a piece of metal that fits in the palm of your hand! I was under the impression that the restrictor has to be improved by someone or other, I got given various certificates. Although I suppose as long as a homemade one did the job properly there is no way they (police, insurers) could argue your bike is not restricted, the dyno never lies! lol

It will do the job for you trust, I had my bike with a restrictor for 2 years and now I have it off it can get to the same speed just alot faster:BaseballHat_LNY2EG:

My bike is also restricked, it needs a bigger bore, stroker crank & +1mm valves, that should loosen it up.

:ytiller:

Kev, that's nothing... lol my bike is so restricted it's almost not there anymore... wait... IT IS NOT there!! :smilies0974:

I could only manage pics from this angle due to not having enough hands to hold the torch, hold the camera, hold the air tubes out of the way, and hold the bike up with my knee lol.

The red lines outline the restrictor, one of the most expensive tiny pieces of metal you can get for your xt lol! The yellow curve shows how it works.


http://i51.photobucket.com/albums/f3...tionEdited.jpg

http://i51.photobucket.com/albums/f3...estriction.jpg

For what is charged for these thing their has to be some good money to be made producing them for a damn site cheaper. I mean how much can these cost to make if you have a half way decent metalwork shop.

I could make them for a couple of $. The only problem, I am lead to believe it needs some sort of registration.

Hey Kev it wouldn't be right you making something for an XT to make it slower. It would spoil your reputation.:laughing5:

Yeah I would imagine they cost very little indeed to make.

Haha that's true, it would be ciminal for Kev to make something that decreases performance, I think we would have to exile him!

Yes it must be to do with registration and certifications, as every fiinternational restriction kit cost exactly the same price (as far as I have seen on their site), and they all vary from a metal plate like this, to metal washers etc. When I was researching my restriction options I asked fiinternational why they cost so much, one of their reasons they said was that they have to spend a lot of money to get a bike, test it a lot on the dyno with the prototype restrictor, re test it on another bike etc..... but to be honest everyone knows why....they pretty much have monopoly power (well technically oligopoly), we don't have much choice and so they will charge what they like!

Its all a money making idea as well, plus legally they have to restrictor X amount of bikes before they can write it off as working.

Actually there is a very simple method to restrict your bike, just give it to Johnno to tune.:YellowCrazy_J8GDC6:

Must be the only person on the planet to try to tune a bike and make it go slower!!!!!!!!!!:D

I'm sdure he'll be along soon to explain how to do it!:violence:

thanks for all the info guys, havent been to the dealer yet will let you know the outcome