Restriction (33BHP)
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tristanwillis123
- Posts: 6
- Joined: Mon Apr 14, 2008 6:13 pm
Restriction (33BHP)
Wat does the restrictor kit for a zxr consist of, are they easy to install and uninstall, how much are they, where can i get one from and how do the police know if the bike is restricted?
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rene
- zxr400 oc member

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- Joined: Fri Feb 23, 2007 10:34 am
- My Bike: kwack ZXR750L1
- Location: Northampton
Re: Restriction (33BHP)
Most common is washers that restrict the air flow avaible from F1 international but the law dosnt state how the bike has to be restricted so you could just pull of 3 HT leads if you wanted to! As for removing the washers its easy as removing the carbs, cost about £200 fited new but secondhand (if you can find them) more like £30.
As for the police part many people belive that YOU have to prove to the police that the bike is 33bhp this is not the case. Its up to the police to prove you wrong thus the only way they can do this is dynoing your bike (expensive and takes a lot of time) so unless you've badly hurt/killed somone i personaly wouldnt worry about them doing you over.
I got pulled over a few times when on a full power zxr750 that i hadent restricted a few times and they never even asked (most coppers in cars dont even know about the rule)
As for the police part many people belive that YOU have to prove to the police that the bike is 33bhp this is not the case. Its up to the police to prove you wrong thus the only way they can do this is dynoing your bike (expensive and takes a lot of time) so unless you've badly hurt/killed somone i personaly wouldnt worry about them doing you over.
I got pulled over a few times when on a full power zxr750 that i hadent restricted a few times and they never even asked (most coppers in cars dont even know about the rule)
ZXR750 L1
tail tidy, polished bits, custom paint job, k&n, dynojet, Full akropovik, down geared, GSXR calipers, hel brake lines front and rear & clutch line, maxtron resprung froks 120BHP
BikePics page-
http://www.bikepics.com/members/zxr400rene/
tail tidy, polished bits, custom paint job, k&n, dynojet, Full akropovik, down geared, GSXR calipers, hel brake lines front and rear & clutch line, maxtron resprung froks 120BHP
BikePics page-
http://www.bikepics.com/members/zxr400rene/
- deviant
- zxr400 oc member

- Posts: 1352
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- My Bike: ZXR400 L3
- Location: Nottingham, UK
- Contact:
Re: Restriction (33BHP)
a myth perpetuated by the likes of FI international....rene wrote:As for the police part many people belive that YOU have to prove to the police that the bike is 33bhp
In the garage:
Kawasaki ZXR400 L3 - shiny
Suzuki DR800 - bouncy
1978 Suzuki GS400 - PROJECT RETRO RACER!
Kawasaki GPz500S - for sale soon
Honda CG125 BR-J - in bits
Kawasaki ZXR400 L3 - shiny
Suzuki DR800 - bouncy
1978 Suzuki GS400 - PROJECT RETRO RACER!
Kawasaki GPz500S - for sale soon
Honda CG125 BR-J - in bits
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tristanwillis123
- Posts: 6
- Joined: Mon Apr 14, 2008 6:13 pm
Re: Restriction (33BHP)
Cool. Would you say it's worth abiding by that particular law then? Seems pointless to neuter your bike. But then again, better safe than sorry. 
- deviant
- zxr400 oc member

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Re: Restriction (33BHP)
If you don't, and you get caught, you are effectively riding without a licence - because your licence doesn't cover the vehicle you are riding. That's a fairly serious offence.
In addition, your insurance is basically voided by not having a valid licence. So you don't have any insurance should anything happen.
I'm not going to make any comment on the likelyhood of you actually being caught. But I will say that a 33bhp bike is still pretty quick, and two years isn't really that long.
Make your own choice.
In addition, your insurance is basically voided by not having a valid licence. So you don't have any insurance should anything happen.
I'm not going to make any comment on the likelyhood of you actually being caught. But I will say that a 33bhp bike is still pretty quick, and two years isn't really that long.
Make your own choice.
In the garage:
Kawasaki ZXR400 L3 - shiny
Suzuki DR800 - bouncy
1978 Suzuki GS400 - PROJECT RETRO RACER!
Kawasaki GPz500S - for sale soon
Honda CG125 BR-J - in bits
Kawasaki ZXR400 L3 - shiny
Suzuki DR800 - bouncy
1978 Suzuki GS400 - PROJECT RETRO RACER!
Kawasaki GPz500S - for sale soon
Honda CG125 BR-J - in bits
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tristanwillis123
- Posts: 6
- Joined: Mon Apr 14, 2008 6:13 pm
Re: Restriction (33BHP)
yeah. makes sense to follow the law.
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Caz
- L-plate hell

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Re: Restriction (33BHP)
agree with Deviant.
Not having your bike restricted means that you are riding without a licence and are therefore voiding your insurance.
How would you feel if you seriously injured someone and your insurance company refused to pay out because you were riding without a valid licence?
your insurance company may not ask to see your certificate of restriction. *BUT* the T&Cs do say something along the lines of "providing you have a valid licence" which if you dont have your bike restricted - your licence isnt valid. EOD
teh 33bhp restriction is there for a reason, certain people choose to ignore it. You make your own choices - just dont expect any sympathy if you get caught in any sticky situation.
Not having your bike restricted means that you are riding without a licence and are therefore voiding your insurance.
How would you feel if you seriously injured someone and your insurance company refused to pay out because you were riding without a valid licence?
your insurance company may not ask to see your certificate of restriction. *BUT* the T&Cs do say something along the lines of "providing you have a valid licence" which if you dont have your bike restricted - your licence isnt valid. EOD
teh 33bhp restriction is there for a reason, certain people choose to ignore it. You make your own choices - just dont expect any sympathy if you get caught in any sticky situation.
GSX-R600 K4
ZXR400 H2
Commuter: Gilera Runner 180SP
Contributing writer to:http://jocke.selincite.com
ZXR400 H2
Commuter: Gilera Runner 180SP
Contributing writer to:http://jocke.selincite.com
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tristanwillis123
- Posts: 6
- Joined: Mon Apr 14, 2008 6:13 pm
Re: Restriction (33BHP)
yh. its especially valid seeing as most people will have an off whilst learning.
- deviant
- zxr400 oc member

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- Joined: Thu Jun 02, 2005 9:50 am
- My Bike: ZXR400 L3
- Location: Nottingham, UK
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Re: Restriction (33BHP)
again, that's your choice.tristanwillis123 wrote:yh. its especially valid seeing as most people will have an off whilst learning.
In the garage:
Kawasaki ZXR400 L3 - shiny
Suzuki DR800 - bouncy
1978 Suzuki GS400 - PROJECT RETRO RACER!
Kawasaki GPz500S - for sale soon
Honda CG125 BR-J - in bits
Kawasaki ZXR400 L3 - shiny
Suzuki DR800 - bouncy
1978 Suzuki GS400 - PROJECT RETRO RACER!
Kawasaki GPz500S - for sale soon
Honda CG125 BR-J - in bits
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superman
- Full Licence rider

- Posts: 1372
- Joined: Fri Feb 16, 2007 10:36 am
- Location: Wolverhampton
Re: Restriction (33BHP)
you might get away with not havin it done if you get stopped but touch wood, if you have an accident the insurance will go to hell an back to try an get out of payin up so dont give em the excuse. theres always a reason for these things i guess.
Remember speed kills, so does smoking, drinking, drugs, fast food and many more good things
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kermit the frog
- Posts: 142
- Joined: Wed Mar 19, 2008 8:00 pm
- My Bike: zxr400 L9
Re: Restriction (33BHP)
wow, i like dat akrapovic rene - thumbs up.
my zxr is restricted and i think it still goes like stink. i seem to not carry on accelerating after 12000 rpm and a couple of times ive gone to overtake n though o toad wheres the power gone so be wary of faster travelling traffic when ur overtaking them. i still need to do a speed test though as ive tried it yet, i did get 107mph with my gpz500 restricted so i reckon 115mph. ive only got til december till im unrestricted so i wnt be riskin pullin it off yet.
my zxr is restricted and i think it still goes like stink. i seem to not carry on accelerating after 12000 rpm and a couple of times ive gone to overtake n though o toad wheres the power gone so be wary of faster travelling traffic when ur overtaking them. i still need to do a speed test though as ive tried it yet, i did get 107mph with my gpz500 restricted so i reckon 115mph. ive only got til december till im unrestricted so i wnt be riskin pullin it off yet.
never give up!
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rover220
- zxr400 oc member

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- My Bike: zx7r p6
- Location: Stafford
Re: Restriction (33BHP)
doubt very much a zxr will pull 115mph when restricted. more like 100 imo, it just wont have the top end power in 5th and 6th to get to 115.
- deviant
- zxr400 oc member

- Posts: 1352
- Joined: Thu Jun 02, 2005 9:50 am
- My Bike: ZXR400 L3
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Re: Restriction (33BHP)
downgear it then....
In the garage:
Kawasaki ZXR400 L3 - shiny
Suzuki DR800 - bouncy
1978 Suzuki GS400 - PROJECT RETRO RACER!
Kawasaki GPz500S - for sale soon
Honda CG125 BR-J - in bits
Kawasaki ZXR400 L3 - shiny
Suzuki DR800 - bouncy
1978 Suzuki GS400 - PROJECT RETRO RACER!
Kawasaki GPz500S - for sale soon
Honda CG125 BR-J - in bits
- RedexRobB
- Site Admin

- Posts: 7212
- Joined: Fri Aug 30, 2002 7:37 pm
- My Bike: ZXR400L3
- Location: Ipswich, Suffolk
Re: Restriction (33BHP)
The average is about 100 mph, but having said that a member here SEAN, his ZXR was restricted and somehow it pulled 120! At first we thought it might not be restricted, but soon found out that it was. God knows how it managed it.
- lindaloo
- zxr400 oc member

- Posts: 429
- Joined: Mon Nov 06, 2006 10:05 am
- My Bike: ZXR 400
- Location: rotherham
Re: Restriction (33BHP)
my zxr was restricted and top speed was 120! standard bike that runs like a gd un? 
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