The Supremo ($5,530) and Robusta ($6,565) are essentially the same frames used for the Speedster ($3,620) and the Roadster ($4,650) but with Wound-up Carbon forks, Rolf Vigor paired spoke wheelset, higher-end and lighter weight components which is what constitutes the ~$1,900 price differences between these models and shaves off several lbs. It's also worthwhile to note that the Supremo & Robusta come with rear brake fitments for caliper and disc brakes and no fittings for an Arai drum brake. The Speedster and Roadster use brake bosses for canti or linear pull brakes (aka. V-brakes) and have the necessary cable guides and pac-man for an Arai drum brake + the disc brake mount.
They have been designed to yield the same handling characteristics and very similar frame feel. The Aluminum models are 1.7lbs lighter, sounds different, costs $1,000 more but are otherwise not much different with regard to deflection/flex/stiffness from the Steel models.
If you think you'll do any travelling, the Supremo can be built-up with S&S couplers for an additional $1,200 which is $200 more than the uncoupled Aluminum model. Of course, the weight also goes up as a different tubeset is used + the weight of the couplers.
Thus, it comes down to four decisions:
1. Do all of the choices fit your budget?
2. Do you want couplers? If so, you would need to go with a steel frame.
3. Do you think you'll need or want the option of an Arai drum brake? If so, the stock Supremo and Robusta may or may not meet your needs.
4. Do you have a preference for steel or aluminum and the 1.7lb weight difference?
Note: Cost data taken from Co-Motion's October '03 price sheet.
Last edited by livngood; 09-19-04 at 01:16 PM.