Standard SP - never touched the stock stuff. Since the 'normal' front head isn't as efficient as the rear, and I also have a rear ready to go on the front, it makes sense to do the swap - and I guess a hose will be cheaper than ahaving the head machined.

Thanks anyway.
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball