1 Brake seal woes Tue Jul 18, 2023 10:40 pm
KiwiK100
Gold member
Hey all, I ordered two sets of Ariete seal kits from Moto-bins for the front callipers of my ‘83 K100. Yes, I know this has been covered before and I’ve read (after the purchase) that they don’t fit the early callipers.
So I took my verniers and measured the new seal against the old seal. Bear in mind the old seals are likely original however they were not leaking.
Ariete .130in/3.30mm
OEM .112in/2.86mm
Unfortunately I’m unable to measure the depth of the seal rebate but the above measurements show a significant difference in seal thickness of nearly .5mm.
Anyway, Damien at Moto-bins has looked after me like royalty and has also amended their website to show that these kits do not fit early K callipers. I’ve now ordered sets of the Brembo kits, as others on board here have done. Interestingly (and we’ll documented previously) the BMW part number on the Moto-bins website when searched comes up with R models only. We learn.
So I took my verniers and measured the new seal against the old seal. Bear in mind the old seals are likely original however they were not leaking.
Ariete .130in/3.30mm
OEM .112in/2.86mm
Unfortunately I’m unable to measure the depth of the seal rebate but the above measurements show a significant difference in seal thickness of nearly .5mm.
Anyway, Damien at Moto-bins has looked after me like royalty and has also amended their website to show that these kits do not fit early K callipers. I’ve now ordered sets of the Brembo kits, as others on board here have done. Interestingly (and we’ll documented previously) the BMW part number on the Moto-bins website when searched comes up with R models only. We learn.
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Current rides:
2020 R1250RS. Metallic black with all the fruit
1983 K100C. Red. Krauzer fairing.
1984 K100RS. Madison silver.
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 186,000km SOLD
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km SOLD
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles. SOLD
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Grandads ride