Hoping someone can help me. Whenever I get on the rear brake its good for a second or two then looses all pressure and I need to keep pumping to get any braking out of the back.

Im thinking Ill need a rebuild or seal kit, but I cant work out what make/model this is, any ideas?

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Been doing some research and another site has confirmed its most likely a DNA unit....

Might just need a bleed BIGGIE?

I'd be doing that 1st before buying the seal kit.

thanks VIC, yes ill be doing that, but by the way it dropps pressure so quick I think something has failed in the unit

I was under the impression DNA was US built and relatively high quality (going by their prices anyway)

nope

good to know, sounds like the fix might be more expensive than I first though.....

what do you think a reliable good quality unit will set me back? And is it a case of just replacing the internals but keeping the housing the same or is it a case of changing the whole unit?

ok thanks for the advice.

I decided to take the fatboy to a mechanic as the brakes were getting the better of me, long story short both front and rear masters need attention, previous owner has used dot4 instead of dot5 and caused damage internally

Anyone know where I could buy a well price front and rear to suit what already existing on my bike? (without having to change controls etc)