Stack Upgrade Tier 4

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sophisticatedbackpacks:stack_upgrade_tier_4

Recipes and uses come from the FTB Skies 2: Aero 1.10.0 dump: the server's final recipes after all pack scripts ran.

Last verified for FTB Skies 2: Aero v1.10.0 on Sep 22, 2026 · v1.10.0 released Sep 8, 2026

In FTB Skies 2: Aero, Stack Upgrade Tier 4 is made with shaped crafting, from Stack Upgrade Tier 5, any leather, and any string. Stack Upgrade Tier 4 has 2 recipes in FTB Skies 2: Aero in all. Stack Upgrade Tier 4 is an ingredient in 2 FTB Skies 2: Aero recipes. 1 FTB Skies 2: Aero quest asks for Stack Upgrade Tier 4.

How do you craft Stack Upgrade Tier 4 in FTB Skies 2: Aero?

Stack Upgrade Tier 4Mod recipe

Crafting Shaped

Crafting Shaped

any string	Stack Upgrade Tier 5	any string
Stack Upgrade Tier 5	any leather	Stack Upgrade Tier 5
any string	Empty slot	any string

Recipe id: sophisticatedstorage:backpack_stack_upgrade_tier_4_from_storage_stack_upgrade_tier_5

Stack Upgrade Tier 4Changed by the pack

Crafting Shaped

Crafting Shaped

Netherite Block	Netherite Block	Netherite Block
Netherite Block	Stack Upgrade Tier 3	Netherite Block
Netherite Block	Netherite Block	Netherite Block

Recipe id: sophisticatedbackpacks:stack_upgrade_tier_4

What is Stack Upgrade Tier 4 used for in FTB Skies 2: Aero?

3× Stack Upgrade Tier 5Mod recipe

Crafting Shaped

Crafting Shaped

any plank	Stack Upgrade Tier 4	any plank
Empty slot	any plank	Empty slot
any plank	Empty slot	any plank

Recipe id: sophisticatedstorage:storage_stack_upgrade_tier_5_from_backpack_stack_upgrade_tier_4

Stack Upgrade Omega TierMod recipe

Crafting Shaped

9 × Stack Upgrade Tier 4

Recipe id: sophisticatedbackpacks:stack_upgrade_omega_tier

Which FTB Skies 2: Aero quests ask for Stack Upgrade Tier 4?

• Stack Upgrades in General Storage

Everything else FTB Skies 2: Aero changed about Sophisticated Backpacks →

Tags

sophisticatedbackpacks:upgrade