NC30 Front brake caliper seal sizes

williamshatnerspants · Post by **williamshatnerspants** » Fri May 02, 2014 4:30 am

Hi,

I'm looking to order some seals and dust seals direct from Nikone (can't find anyone who'll send me these to NZ from the UK). The caliper seals I think I need are NK No. 1955 - O.D 30mm. Price for 5 pairs a whopping USD $2.90

I can't find the part for dust seals, so if anyone can help with either a Nikone part number or dimensions that'd be great.

Matt

arsey30 · Post by **arsey30** » Fri May 02, 2014 8:31 am

You need 4 sets, the upper and lower pistons are different diameter.

williamshatnerspants · Post by **williamshatnerspants** » Fri May 02, 2014 9:56 am

thanks mate. So 27mm and 30mm dia?

Post by **DocV400** » Tue Sep 02, 2014 3:48 pm

This may be too late for you, but there are two different sizes of the smaller Pistons.
Some have 30mm and 27mm pistons, others have 30mm and 25.5mm pistons.

Only just found this out myself, as I'm trying to order some seals for mine (Grey, 1994 reg), which has the 25.5mm pistons.
A set arrived today, and they've sent me four 25.5mm seals, and four 24mm dust seals

, must have misunderstood my message. They know there's two sizes for the small ones, and ask you to tell them which sizes you need when ordering.

Some ebay listings mention this difference (as above), others don't, and those all seem to list the 27mm option, if they even list the sizes.
One shop I just rang wasn't aware there were different sizes.

I don't know if the difference is between years, between greys and official imports, or something else.

Post by **RickOliver** » Tue Sep 02, 2014 9:49 pm

As ever I`m happy to be contradicted if anyone knows better but to the best of my knowledge all NC30s use 30mm & 25.5mm pistons and all NC35s have 30mm & 27mm.

I always have OE Honda seals in stock and I`ll ship worldwide...

Post by **DocV400** » Wed Sep 03, 2014 6:09 am

You may be correct there Rick, would be an obvious explanation I suppose.
Nearly all the ebay sites that stock them though list NC30 seals as 30/27.