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Yamaha's iconic Blue Spot calipers are a great set of stoppers and are often bought second hand from breakers to upgrade the brakes on older bikes such as the FJ1200, onto which they bolt straight on.
The problem is that people don't change their brake fluid as often as they should and these brakes suffer from corrosion. When corrosion gets behind the seals, they are forced against the pistons seizing them. As these calipers can't be split you can't use a standard piston removal tool so you are stuffed. When the calipers were made they were line bored and plugs inserted, which are secured in place with the 'blue spot' nuts for which there are no tools available. Yamaha claim in their manuals that they can't be taken out and death will be the reward for those who try :)
In reality they can be taken out with this tool and a 22mm socket/ring spanner. This British made tool from Laser Tools is machined from aluminium so that it is less likely to mark the soft 'blue spot' nuts.
There is an 'O' ring sealing the plug behind the blue nut, which Yamaha do not supply, but we can! The cynical amongst you might think that Yamaha are better off selling a whole new caliper, but we couldn't possibly comment! We must however emphasize that these are NOT standard 'O' rings. Standard 'O' rings are not compatible with DOT 4 brake fluid; use them and Yamaha's warning might be brought home. Once the plugs are out it is easy to drive out the outer seized pistons with a drift and the inner ones can be removed with a professional brake piston removal tool. If the pistons are well stuck you might need a collet style tool. Gently warming the caliper with a heat gun will help as will liberal use of ACF50.
- Regular price
- £23.99
Yamaha's iconic Blue Spot calipers are a great set of stoppers and are often bought second hand from breakers to upgrade the brakes on older bikes such as the FJ1200, onto which they bolt straight on.
The problem is that people don't change their brake fluid as often as they should and these brakes suffer from corrosion. When corrosion gets behind the seals, they are forced against the pistons seizing them. As these calipers can't be split you can't use a standard piston removal tool so you are stuffed. When the calipers were made they were line bored and plugs inserted, which are secured in place with the 'blue spot' nuts for which there are no tools available. Yamaha claim in their manuals that they can't be taken out and death will be the reward for those who try :)
In reality they can be taken out with this tool and a 22mm socket/ring spanner. This British made tool from Laser Tools is machined from aluminium so that it is less likely to mark the soft 'blue spot' nuts.
There is an 'O' ring sealing the plug behind the blue nut, which Yamaha do not supply, but we can! The cynical amongst you might think that Yamaha are better off selling a whole new caliper, but we couldn't possibly comment! We must however emphasize that these are NOT standard 'O' rings. Standard 'O' rings are not compatible with DOT 4 brake fluid; use them and Yamaha's warning might be brought home. Once the plugs are out it is easy to drive out the outer seized pistons with a drift and the inner ones can be removed with a professional brake piston removal tool. If the pistons are well stuck you might need a collet style tool. Gently warming the caliper with a heat gun will help as will liberal use of ACF50.
- Regular price
- £23.99
Let customers speak for us
Good product. Flexible in a limited space allowed easier fuel line routing.
Exactly as described, excellent quality and well priced
Used for classic Kawasaki z900A4 , replaced the old corroded one for the left hand handlebar switchgear to main loom . Buy the Laser crimping tool to crimp the connectors correctly.
Thanks
Very good just what I was looking for.
This battery is a revelation and seemingly game changing battery technology. It is just so light! I initially thought it had nothing inside it, fitted it to my Guzzi and it cranked it over effortlessly, on a motorcycle any weight changing tech is obviously very welcome.
just what I needed at a good price and fast shipping.
Fsst post sensible prices , very good company to deal with
Full rewire on my 76 Kawasaki z900 A4 , this crimp tool was more than enough for the job , coupled with correct bullet and multiplug connectors from Bikers Tookbox gave a professional job and matches the original Japanese finish . Good enough tool for such a one off job , but handy for other projects.
Lighter than expected, really strong cranking power when compared to standard fitment
Fitted to my 1989 Honda CB450DX.
Seems to work fine.
Time will tell.
Good quality stuff
Had advice from Ralph previous to my purchase and was extremely happy with the wiring and the pricing, will recommend, and also use this company again, thank you.
Delighted with the case that the bits come in. Impressive quality which i expect to get years of service from! The item was very well packaged 📦 👌 👏
Look a lot beefier than the standard copper seals , will try them with my Delkevic 4:1 exhaust system
