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Sargent Sarcastic
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I found it best to go down to the local shops for a long weight, then hang em on sky hooks for a few days. This stretching makes them more pliable, last longer and also less susceptible to the temperature differences Jedi mentions.
If you need extra weight, I find using a box of valve clearances is an ideal starting point, then just just add more valve clearances as required.
Just to be on the safe side, I used to hang them on rubber nails to minimise the risk of over stretching them.
If you are finding they still are not pliable enough, you could try pouring a couple of buckets of steam over them, as I found this also helped.
 

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i always go for stock if im honest but these are good replacments iv found

 

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Sargent Sarcastic
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8,115 Posts
School boy error on my part as I forgot to mention something regards the rubber nails, they are tricky to fit as you need a special tool. So go down to your local mechanics and ask them for a hard punch.
Whilst you are there you could also ask em for a learning curve as these are good to identify when the bands are stretching congruently.

When you finally come to fit them, I suggest getting some non conductive cardboard to stand on to minimise any static damage.
If you don't have a big tool kit, you can manage most of the fitting with a metric adjustable spanner.
Then of course make sure that the parts of the bike are all nice and clean before you start. I've found it best to use dry water, as then it won't have any chance of rusting afterwards.
 

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^^ If they can't give you a hard punch, you can also knock the nails in with a special 'L' shape hammer, it's called a 'leg' and it's made by a British company called 'Salmon'. So if they can't give you a hard punch just ask for a leg of salmon
 

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Hi there i have recently purchased a cbf 125 and i was wondering i want to add more power to it and i was wondering if anyone knows how to unrestrict them or how to make them much faster as at the moment it wil do 70 and with my head down it will do 75 but id like some more speed and was wondering if there is anyway of getting more speed out of the bike
Bro with 5 gears you bike must be absolutely screaming at 70/75mph no way you’ll be able to go faster 😂
 
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