LGD and RAD are the best options here for that, and they are best stacked to give the best gains. A great bulking stack is the ultra Recomp stack. Here is the layout
https://www.sarmsx.com/stacks/ultra-recomp-stack-12-weeks-2
1-12 lgd-4033 10 mg day dosed once a day in the a.m.
1-12 S4 50 mg day... split doses... 25 mg in the a.m. and 25 mg 4-6 hours later
1-12 GW-510516 (CARDARINE) 20 mg day… dosed all at once 30 minutes before workout…
1-12 RAD-140 20mg day dosed once a day in the a.m.
PCT
https://www.sarmsx.com/stacks/sarms-mini-pct-stack-1
Clomid 50/25/25/25
GW 20mg per day