yes of course!Does taking weight off your bike by changing to lighter parts have the same end result (more speed with less effort) as loosing the same amount off your body weight?
Yup, you're probably thin enough. There are more effective (and economical) places to cut weight or improve performance. Not that it's always this simple, but as an example lighter wheels will add more performance per gram lost (rim/spoke weight) than lighter cranks. Replacement wheelsets may also include better bearings as well. A better bottom bracket adds performance where a better headset bearing just adds life to the bearing. Unsuspended weight (stuff on the other side of your shocks from you) have a greater impact than suspended weight. The energy it takes to accelerate a front wheel and shock lowers decreases with lighter components. I'm 73.5"/210# (raced at 165) so I could lose my whole bike's weight from my waist before I would need to upgrade anything. Good luck with your efforts.Thanks for your answer. I'm actually 6'1" and weigh around 155 lbs so there isn't that much left there. Maybe I should start taking grams off my bike now