deadlifts / squats as already said as well as leg press and the always ALWAYS fun calf raises should do your lower body just fine. You can also add in some leg raises for thighs too.
If you're supplementing the gym with cycling though, keep the weight low and the reps up. Dont get sucked into macho'ing out at the gym or youll find all that extra power/weight is just bogging you down on the bike
deadlifts / squats as already said as well as leg press and the always ALWAYS fun calf raises should do your lower body just fine. You can also add in some leg raises for thighs too.
If you're supplementing the gym with cycling though, keep the weight low and the reps up. Dont get sucked into macho'ing out at the gym or youll find all that extra power/weight is just bogging you down on the bike