Rumour when I was parted from my cash was that the HRC one offered some advance in timing, but we don't think that's true any more.

I'm not too fussed, as I didn't want to cut the loom anyway.
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball