hey guys what does one look like and where would i most likely find it.
its a 1992 vfr400 race bike (no speedo)
am just wondering where to look (photos please) so i can make shore its fitted so i dont go to the track and look like an idiot goin 180klms down the straight on a 400cc hehe
cheers guys, Tim

there are a couple of places ,and a couple of methods

M Max box,a small 2" by 2" box with M Max on it (funny enough) which joins into the loom at one of the cdi connector blocks,cost around £25/30

resistor,a 2.2k ohm resistor soldered into the loom between two wires which go towards making a connector block for the cdi,the black connector block if i remember,costs around 30p i think
or
the same resistor soldered into the loom behind the clocks to the wires which run upto the speedo

i'll get pictures later if you really need them
if the bike was a race bike before you got it i'd think it was already derestricted esspecially if it's running without a speedo

The restriction is within the speedo itself. a small metal plate attached inside activates it, the resistor will stop the restriction but if there is no speedo altogether as far as I know that will solve the problem anyway. At least all I id was disassembled the speedo and carefully prised the plate out.

royster81 wrote: if the bike was a race bike before you got it i'd think it was already derestricted esspecially if it's running without a speedo

Yep it will be derestricted if it runs no speedo. Check the cdi under the pillion area.

I have a spare derestrictor (jap Posh unit) if you want it, $20 posted.

so is it an attachment to the cdi itself? i may take the $20 posted mate i will go and check now if i can see anything connected to the cdi thats not in the manual :)
cheers

just had a look and theres an M max black box connected inline with the CDI :) so thanks for you help guys much appreciated so obviously i wont be needing the spare you have bud but cheers for the offer :)
thanks for you help guys
cheers Tim

glad i could help any

I have been working on a friends VFR400 NC24 import and I've removed the speedo tab but this hasn't helped and the bike still goes to 80 kph and stays there. Any other ideas guys.
Glenn.

remind me to read previous posts,,,will check the black box thing under the pillion seat. Do you remove this?
Glenn.

The black box is what derestricts it, so if you have it leave it in.
i wasnt aware that NC24s had this restriction????
I've never actually attempted to go that fast lol.