DMFT said:
Specialized eyelets/reducers/hardware is different. You'll likely have a tough time getting a proper fit. Not impossible but difficult.
Don't worry about the reducers being different. There are 2 kinds of eyelets and bushings on rear shocks. 80% of the market, which includes all Fox rear shocks, regardless of what frame they are put on, Avalanche, Romic, to name a few, uses 12.7mm or 1/2in diameter eyelets which are 1/2in long. The other 20% uses 12mm eyelets, in diameter, which are the same 1/2in long. Each manufacturer of the shocks can supply you with reducers which will fit whatever frame you want to put the shock on.
Your Triad shock is made by Fox, there is nothing proprietary in how it interfaces the Specialized frame. You just need reducers. The Specialized reducers are fairly common, which may surprise the other posters, they are, for example, the same as Turner reducers. This is at least true of the Enduros. Your Jamis might, if you're in luck, use the same reducers, however, if your rear shock on your current Jamis is not a Manitou nor 05 or newer Rock Shox, you can just take the reducers from the shock you have in there right now and put them in the Triad when you get it.
Just make sure the eyelet bushings are not worn in the Triad. If they are, which means, the teflon coating has worn off the steel cylinder, your reducers will be ruined if you run it like that as steel is tougher than aluminum and will wear it down causing play. Bushing replacement is very easy. (
http://forums.mtbr.com/showthread.php?t=243297) and the new bushings can be ordered directly from Fox, just as can be reducers. It will run you about $20 for the reducers and bushings, shipped to your house, maybe $22.
_MK