the most obvious one is for the rider to lose weight - yes i've lost 6 stone .. but the bike is still heavy as f***! lol
is there any way to lighten the bike without spending a load of cash?
the only 2 i can think of at the top of my mind are:
1. cut the rear subframe down - i dont take pillions
and 2. drilling a few holes in the magneto - this puts less stress on the crank when spinning up... no? i did this to my RS125 and also drilled a few extra holes in the magneto casing - didn't make that much of a difference if any at all to be fair...
any one else got any idea how to make the bike lighter? 165kg for a 400 isn't exactly heavy to a lot of bikes out there ... but its not the lightest either!
lightening the ZXR?
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- R P Corse
- CBT slow

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- masterofinsanity
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Re: lightening the ZXR?
test ride a zx7r then jump back on the 400, it'll feel loads lighter!
Don't forget people there is more to the zxr400 than this forum... check out www.zxrworld.co.uk also.
- R P Corse
- CBT slow

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Re: lightening the ZXR?
lol it's always the easy option really isn't it? lol
i'm keeping the ZXR for the next 4 years.. or up to anyways, i'll be at uni for the next 4 years so i might aswell get my money's worth and go all out with it, will be cheaper for me to keep the 400 in many ways rather than upgrade to a bigger bike!
will be moving to Swansea so not overly far from you mate
i'm keeping the ZXR for the next 4 years.. or up to anyways, i'll be at uni for the next 4 years so i might aswell get my money's worth and go all out with it, will be cheaper for me to keep the 400 in many ways rather than upgrade to a bigger bike!
will be moving to Swansea so not overly far from you mate
- banner001
- Track day God

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Re: lightening the ZXR?
you can seve a few kg's with a lightweight battery, something to consider if your bike is old/has a slightly knackered battery.
if you are gonna chop the rear subframe, you could also look at getting a cheap front bracket constructed as well.
give it a clean, that will remove a few g...
what you doing at uni? im a doctor of molecular biology.
if you are gonna chop the rear subframe, you could also look at getting a cheap front bracket constructed as well.
give it a clean, that will remove a few g...
what you doing at uni? im a doctor of molecular biology.
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
- R P Corse
- CBT slow

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- Location: Surrey
Re: lightening the ZXR?
i have seen these light weight batteries but as im using the bike daily and nightly ... it just wouldnt supply the juice i need - surely? also clean her weekly but will definitely look into making a lighter front subframe!
as for uni, Swansea Met Uni to study Race Engineering
as for uni, Swansea Met Uni to study Race Engineering
- banner001
- Track day God

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Re: lightening the ZXR?
as far as i know the lightweight batteries (the lithium ones) are fine for day to day use, as long as your bike fires up fine it will be ok on a lithium battery.
the problem is that they dont hold a lot of charge for repeated chargings, so if you find that you need to crank the engine over 4 or 5 times to get it to fire you might start to run into the odd problem...
the problem is that they dont hold a lot of charge for repeated chargings, so if you find that you need to crank the engine over 4 or 5 times to get it to fire you might start to run into the odd problem...
UK ZXR400 L3 (1993) - Fully restored and on the roads, my green beast!
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
JPN ZXR250 A2 (1990) - Revs to 19,200rpm... 'nuff said
- R P Corse
- CBT slow

- Posts: 522
- Joined: Fri Mar 30, 2007 1:15 am
- My Bike: ZXR400 H1
- Location: Surrey
Re: lightening the ZXR?
yeah for the sake of a few grammes like that then i'd rather keep standard battery 