Mountain bike- Specialized Stumpjumper question?

Question

I ride a Stumpjumper FSR comp, weight a little over 32 pounds. I am wondering if it would be possible to use the same components that are on my FSR and change them over to the Specialized S-works carbon frame. The stock S-works bike (factory built) is 23.24 lbs. I am looking for a much lighter bike, since I am crossing the line from recreational mountain biker to racer, but would like to get one without having to dish out another $6,500. Does anyone know if the entire weight difference between the two bikes is in the frame, or also in the components of the carbon s-works bike? I would also upgrade my suspension if I upgraded to the S-works frame. Thanks for taking the time to answer!

Answer 1

I'm sure you can switch components. The higher end components will be lighter, but I dont think by much. Youre gonna save weight in the frame, tires, crank & wheelset. If fact, you may be able to see a big dif if you get a light set of wheels. Rotation weight & all that.

Answer 2

You might want to look into what parts are on your bike currently and do some comparisons in addition to the frames.  The frame is probably your most obvious choice (a few pounds there) - but it may also change your geometry and ride - gamble.

Some of the other ways to shave weight:

1.) Go Tubeless - tubes, especially with slime, can add 1-2lbs (at least) to a bike.

2.) Rims/Wheels - a lot of stock rims/wheels are HEAVY - swapping out to a better pair will help drop weight (and you can use the old pair for different (street?) tire treads.

3.) Check your seat, seat post, stem and handlebars - the weight savings on these trade-outs (for far less than a frame) can add up

4.) It starts to get pricey... but cranks, pedals, etc can shave pounds as well - but there's some shop time (unless you can do it yourself) - at this point I'd be looking at a new frame (or new bike altogether).

You might also want to look at other frames - my Giant Trance X0 is around 27lbs (upgraded to XT crank for strength/weight).  The risk here is compatibility and frame geometry (gamble).

Best of luck in the hunt...

Answer 3

well you should buy a cannondale scalpel carbon team

Answer 4

By all means go ahead and do it. What the total weight savings would be i'm not sure, maybe 2~3lbs in the frame, but this is very do able swap.