removing restrictors

[DomP]

I'm looking at buying an sv650 that's been restricted for A2 licence that I would want to remove. Are restrictor kits easily removed and do they use the same method too do their restricting?

[yorkie_chris]

Depends on the kit, what year bike and what method restriction.

Curvy is either different carb slides (OEM) or some washers in the intake, pointy is either an ECU (OEM) or washers and a throttle stop.

[DomP]

Yeah forgot to mention it's a 2010, don't know what type of restrictor it is.

[DJ123]

Have you asked the seller?

[DomP]

No I've not, it only just occurred to me that it may not be a quick removal or if it's the ecu whether the seller has the original

[DJ123]

No I've not, it only just occurred to me that it may not be a quick removal or if it's the ecu whether the seller has the original



The washers are a quick removal. The ECU would be an issue if they didn't have the original. Most people keep the original.

[DomP]

Ok thanks I will check if he has the original ecu

[Corny Gizmo]

if its a 33bhp restriction it'll more than likely be the ECU, if 46.6 bhp restriction it'll have to be throttle stop and washers as Suzuki didn't make an 46.6bhp ECU

[Lithium]

With a 2010 there are 2 options.
The easiest is the ECU restrictor which has to be the 46bhp as the 33bhp is illegal under the new rules.
This method is simply remove the seat, unplug the old ECU and plug in the new ECU. 2 minutes. The problem is the new restrictors seem to be none existent on the second hand market and cost about £300 directly from Mr Suzuki.

The second method is the one that I use as the new ECU's are basically only available from Suzuki and cost a fortune is a throttle stop.
Picked my up from kickstart engineering for £60 and its basically a little metal plate and a certificate you fill out incase your insurance ask for it.
Took me 15 minutes and 2 people to fit this. My partner held up the tank of the bike whilst I fitted the restrictor plate. Will give more details if your interested.

[Lithium]

Couple of notes on that, I bought my SV (k6) about 4 months ago and I struggled to find many and the ones that were tended to be pretty pricey.
Bear in mind that it would cost you £60 and no more than half an hour to restrict it yourself and it saved me £300 on the bike and I got a newer year.

[Ruffy]

... which has to be the 46bhp as the 33bhp is illegal under the new rules. ...
Erm, why? I know it's a derail but please explain this assertion because I don't think it's correct.

[Ruffy]

Erm, why? I know it's a derail but please explain this assertion because I don't think it's correct.
So my own curiosity got hold of me and I did some research. It looks like I was wrong and Lithium is correct (apologies to you, Lithium :takeabow:).

According to the rules, an A2 bike can't be restricted to less than half its unrestricted power, which means that to restrict to 33bhp an unrestricted SV shouldn't make more than 66bhp, which of course the pointy models do. Therefore, an SV can't be restricted by a 33bhp ECU if it is to be legal.

[DJ123]

he's removing the restrictor, not installing it

[Lithium]

Yes Ruffy that was the reasoning. Its a little thing but if your in a situation where they are checking if its restricted they will be picky enough regarding that as well. Which is a pain in the ass as the 33bhp restrictors can be picked up pretty cheap.
From what I read Daddy was that the enquiry was derestricting a bike that has not yet been purchased so was just offering the info incase it would help.

"I'm looking at buying an sv650 that's been restricted for A2 licence"
I was in a similar situation and it worked out better to restrict it myself as it opened up the pool of bikes to shop from.

[DomP]

I'm going the other way, de-restricting. Would it be visibly obvious to see if its restricted then

[Lithium]

If you were say just walking past the bike then no not really. For ECU its a black box under your seat that you would check the model number of to indicate wether it is restricted or not.
The throttle stop is visible if you look closely between the gap in the frame on the left hand side.

Knowing what type of restriction it is on the other hand is more difficult as far as I am aware. You would have to know the model number of each ECU to know which it is and with a throttle stop theres no chance.

[stuartb]

According to the rules, an A2 bike can't be restricted to less than half its unrestricted power, which means that to restrict to 33bhp an unrestricted SV shouldn't make more than 66bhp, which of course the pointy models do. Therefore, an SV can't be restricted by a 33bhp ECU if it is to be legal.

Isn't the upper limit 35kW (~47bhp) for an A2 license?

[Tomor]

I think you may find that the ' half of original power for restriction ' is only applicable for the test. If it was for the license ongoing, it means that it would be illegal to ride a 125 on an A2 license, which we all know isn't true.

[Lithium]

It is specific to the restriction, on an A2 lisence you cannot ride a motorcycle that has been restricted below half of its original power.
You can ride a 125 as its not restricted. Assuming a power output of 14bhp from a 125 if you restricted to less than 7bhp then it would in fact be illegal. In these scenarios it seems a bit odd and I imagine the obvious intent is to stop someone buying a R1 and restricting it down to A2.

The problem is with insurance if they are checking if you have restricted the bike they will most likely also check that it's restricted to the correct legal standard and if they find a way to not pay out they will take it.
Also if the accident was your fault and your insurance say your policy is invalid the police then slap you with riding without insurance (6 points and a hefty fine?) and if they want to be arses riding without a lisence for the specific vehicle.

This is all worst case and in hindsight irrelevant if the restrictor is going to be removed. On first read I thought Dom was going to be on A2 for a while before derestricting which appears not to be the case.