08 Trek Fuel EX 8. Better Rockhopper. September 2009 edited September 2009 in MTB buying advice. 0. With a goal of making sure that the Rockhopper offers both the best fit and best handling performance for every person, no matter what their measurements, we’ve paired each frame size with the optimal wheel size. With a goal of making sure that the Rockhopper offers both the best fit and best handling performance for every person, no matter what their measurements, we’ve paired each frame size with the optimal wheel size. XL or L. wesdev Posts: 104. The result is a Rockhopper to fit every rider and the assurance that every Rockhopper is rolling on the best-handling wheel for its frame size. so how does this sizing compare to the rockhopper 21 sizing. The result is a Rockhopper to fit every rider and the assurance that every Rockhopper is rolling on the best-handling wheel for its frame size. I'm 6ft 1 and im wondering what size frame i would be for an FSR XC PRO? Better performance. Better performance. Fitting Your Bike - Just picked up a Specialized RockHopper Comp FS, what size is it? Better value. Specialized sizing?? I have a 2005 Specialized Rockhopper Comp hardtail which I like a lot and the size is 21 . This latest Rockhopper is available in seven different sizes to accommodate rider heights between 4’3″ and 6’9″. - Hey gang, Been doing the cycling thing for a good while (42 years) with most of my serious stuff back in the late 80's and early 90's (Road Bike), but now I'm getting into gravel, street/trail type setups and I … Posts. With the goal of making sure that the Rockhopper offers both the best fit and best performance for every person, no matter their measure, we’ve paired each Rockhopper frame size with the optimal wheel size. I'm 6ft 2 and my FSR XC is Large. Any ideas? Better value. The Specialized Rockhopper that rolled beneath so many shredders throughout their youth keeps on shifting as the brand continues to update its spec and geo. Pretty sure I'd find XL too big. i have a specialized rockhopper and i am getting some new tires for it very soon i no that the front maximum tire size is 2.5 but i cant find any where that will tell me the rear maximum tire size also the tires i am getting are 2.35 Better Rockhopper. I am going to get a Stumpjumper FSR this year and they seem to come in size med, large, xlarge etc. About the Specialized Rockhopper SportAll barn-burner and no benchwarmer, the Rockhopper Sport throws out the playbook when it comes to putting performance points on the board while playing some serious defense on behalf of your wallet. Brand: Specialized, Product: Rockhopper 27.5. timmys Posts: 191. September 2009.