Originally Posted by
reddog3
If the bike has been designed properly with regard to the materials used, rider weight and intended usage- probably no sacrifice in durability.
Interesting...I thought that the thinner walls alone would have made the Spirit tubing much easier to dent. The other frame in 725 also had lugs, which is likely why there's a ~1.3lbs difference. That's also just a ballpark figure. My main concern was durability and how much I really sacrifice between the two different tubings.