[Jacksondf]

I have a 4300 and have heard that the frame is the same used in several of the higher end models. Does anyone know if that's so?

Also, I just picked up my neighbor's Specialized Rockhopper, and it seemed a lot lighter than my 4300. Are there any reasonably priced ways to lower the weight? I'm guessing a 4300 weighes about 30#.
Thanks

 

[Thirdrawn]

The 4300 and the 4500 use the same frame. However, I believe that higher end alum bikes do use a different frame.

The best way to save weight is to get some new wheels. Maybe some new tires would drop a quick .5lb to 1lb. Dropping rotating weight is the most noticeable way to improve performance. Plan on spending ~$60-80 for high-end tires or ~$300 for a decent performance wheelset.