Came across this cool little frame for mounting aftermarket cafe seats to the stock seat hinges on RDs (and I am assuming R5s), allowing you to bolt it to the stock location and maintain the flip-open functionality. This way you can still get to your oil filler and battery should you go with a lower-profile seat. I'm definitely interested. I don't know anything about these guys, the quality of their work or what not, but the pics look good. I'll be contacting them in the near future.
In the meantime, here is their product description from an eBay auction:
Now there is a simple solution for mounting your custom fiberglass or carbon fiber cafe seat or street tracker seat. Our all alluminum frames are specifically desiged to allow you to bolt the seat hinges and seat latch off of a stock DS7 or RD 250/350. You maintain normal seat operation. No battery modification. Best of all no ugly gap between the seat and the gas tank. Pre-drilled for installation of your latch and hinges. We supply stainless steel bolts, nylon washers, nuts and lock washers. All you need to do is align your seat and drill the holes to match using the pre drilled holes in the seat frame for the hinges and latch. Rounded stainless steel Allen bolts are easily covered by seat padding.
Will be listing models for XS650 and Triumph in the near future. Other models to come.
These are designed for flat bottomed fiberglass and carbon fiber seat pans. Curved models like the XR750 pans may require some modification.
More info and pics can be found at RD Innovations site.
BTW they make super-trick CF flyscreens too, to complete the cafe look. Very sharp.
UPDATE: Jerry Jensen from RD Innovations sent in some more info on his products:
Really happy to see your piece on our products in your blog. Just to let you know our seat frames are made out of aircraft aluminum. We are currently supplying seat frames to Moto Carrera and HVC. My business is new and little promotions like this are a real shot in the arm. Thanks for helping us out!No problem Jerry - keep up the good work!