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I really like the BT45's - have them on the K and the little Honda V500 Ascot - but I don't buy them for mileage. For feel, they're great.

Chuey, My RS doesn't have much clearance using a 110. A 120 would fit at a squeeze, and might require a longer top hat to give satisfactory swing arm clearance.
What size tyre did you buy?
I would expect mileages much better than 5 and 6 thousand k's can be achieved with a bt45 rear.

I recently mounted BT45's, and it is my understanding that the rear has the "dual compound".

I used the Mac50's exclusively for several years ... then they became too difficult to find and I switched to the Avon Roadriders. They're available in the correct sizes and actually have some attributes that are a step ahead from the Mac50 (for example, no continuous center groove means less tendency to track rain grooves).

John Falconer

I had a pirelli sport demon fitted today. A good deal cheaper than a Mac50.
$165 fitted for the pirelli compared to $205 for the mac.
It will be interesting to see how it performs/lasts.

Bought a handle bar master cylinder from motobins, cost me $168 compared to $350 list price from munich cycles.
I'm happy with that.
And happy that I no longer have a leaking master cylinder.

ME 109 wrote: Bought a handle bar master cylinder from motobins, cost me $168 compared to $350 list price from munich cycles.
I'm happy with that.

Jeff, 13, 14 or 15mm?

Oh look! An edit button! Bewdy.

15mm Steve. I thought about finding a s/hand unit but after seeing the price of a brand new one from motobins, I thought it was the way to go.
The mc housing was really beyond restoring due to pitting in the bore and corrosion elsewhere, so a 'kit' was not the solution.
Time to find a good s/hand unit was against me also, as the leak became substantial.

Save the pitted one and have it bored and sleeved to 14 mm. You will get a little more lever travel, better feel and more power with the same hand squeeze.

Interesting modification George.
I noticed the main difference between the bore sizes (13, 14, 15, and 16) was different types of piston/brake lever configurations.
What other mods are needed to be compatible to the 15mm set up?
My old mc has corrosion around where the circlip seats. Still serviceable but perhaps not worth the effort/expense in this case.

The main difference is that the smaller MC diameters give higher line pressure with the same hand pressure than the larger diameters. The lever travel is a little longer with a smaller dia. to get the same caliper piston travel.

If you had a 16 mm mc before, you will notice better braking with a 15mm.....less hand pressure for the same braking as with the 15 mm mc. There are no equipment mods needed to change mc sizes other than changing the mc.

I think when the mc is sleeved, the sleeve wall thickness is eonugh for a new circlip groove.