resevoir caps SDR

I recently bought a set of clutch,brake reservoir caps for my SDR. My understanding was that rear brake and clutch used same size cap. It is not on this bike. They are oberon for aprilia. Clutch res is maybe 1-2 MM larger than rear brake.Does anyone know were I went wrong and is this an SDR specific thing. And were to get black cap that fits clutch res,other two are fine.

They're different on the standard bike too mate. I bought one i thought would fit the clutch, it didn't... .it did fit the rear brake though.

I sold them again though when i realised bright orange res caps are REALLY sad

RC8 set from Oberon fit mine no prob,,,,,,

Thanx man. I was misled told that there the same and aprilia ones would fit. Should have pulled them first and tried to switch them before ordering,my dumb mistake. Right bright orange on those no good.

The clutch reservoir is a Magura and is same size as rear brake reservoir, but different thread. Pulse Racing in the UK was the only non-orange Magura cap I could find.
http://www.ebay.com/itm/MAGURA-BRAKE-RE ... 3efa7aefa0