Mod Details
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Back in 2014, Dave from Brakes International was good enough to send over a calliper rebuild kit. I was supposed to do a fitting guide and send people over to his shop to buy the kits.
Unfortunately I’m useless at remembering to do stuff like that. The kit got stored away for when I needed it. I honestly didn’t think I’d be waiting 6 years for someone to enquire about a weeping calliper seal. Thankfully it eventually happened at a time I was sitting in the workshop (on my 45th birthday) with nothing to do.
What you see below is the Budweg BCK4226 calliper service kit and a Budweg BCP4224 piston.
![](/wp-content/uploads/smartchassis/brakes/brakeseals/budweg3.jpg)
Unless your piston is scored or damaged, you probably don’t need a replacement. If you want just the main O ring seals and the bleed nipple cover, you can buy Budweg BCS4226. As you are disconnecting the brake hose, it’s a good idea to blank them off. See here.
![](/wp-content/uploads/smartchassis/brakes/brakeseals/caliperseal1.jpg)
On the back of the caliper you will have a pair of bolts. On the 450, you will only be able to remove 1 bolt using a 13mm spanner/socket. The other bolt is some pentagon head nonsense bolt that requires a special tool. Don’t bother. Undo the top bolt with a 13mm on one side and a 17mm on the other (to stop the slide pin from spinning).
![](/wp-content/uploads/smartchassis/brakes/brakeseals/caliperseal2.jpg)
The caliper can then be hinged open and the pads removed. Exactly like changing pads but with the caliper off the car.
![](/wp-content/uploads/smartchassis/brakes/brakeseals/caliperseal3.jpg)