The new style Tyga sub-frame seems to provide a mount for the rect. Mine did not. My RS250 has the rect. bolted directly to the frame, acting as a heat sink. The racing rect. on my Ducati bolts to a alloy plate that has a vent directed at it. Obviously keeping the rect. cool is a good thing.

With that in mind I am rethinking the mounting I fabricated. Perhaps an alloy plate would serve as a better cooling surface and keep my arse from gettting so hot. I need to mod. the sub-frame regardless as the tank mount bracket is off, angle wise, in relation to how the tank sits.
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Andre E. Benguerel
1996 Honda NSR250R
Daijiro Kato/Fortuna Replica #74

2000 Honda RS250R (NX5)
2008 Honda RS250R (NXA)
AFM Expert #430