Main Power Up

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Main Power Up is an ability in Splatoon 2 added in the 4.3.0 update.

The ability appears in both primary and secondary gear slots, and will have different effects on each main weapon, even inside the same weapon class.

Known effects

Weapon	Effect
.52 Gal	Increases shot accuracy when firing while jumping.
.96 Gal	Increases damage.
Aerospray MG	Increases ink coverage.
Ballpoint Splatling	Increases damage.
Bamboozler 14 Mk I	Increases damage.
Blaster	Increases shot accuracy when firing while jumping.
Bloblobber	Increases ink coverage.
Clash Blaster	Increases shot accuracy when firing while jumping.
Classic Squiffer	Slightly increases range.
Dualie weapons	Increases damage.
E-liter 4K	Slightly increases range.
Goo Tuber	Increases damage.
H-3 Nozzlenose	Increases damage.
Heavy Splatling	Increases duration of firing in a burst.
Hydra Splatling	Increases damage.
Inkbrush weapons	Slightly increases movement speed while inking.
Jet Squelcher	Slightly increases range.
L-3 Nozzlenose	Increases damage.
Luna Blaster	Increases high-damage radius of explosions.
Mini Splatling	Increases duration of firing in a burst.
Nautilus 47, Nautilus 79	Increases duration of firing in a burst.
N-ZAP '85, N-ZAP '89	Increases ink coverage.
Range Blaster	Increases shot accuracy when firing while jumping.
Rapid Blaster	Increases shot accuracy when firing while jumping.
Rapid Blaster Pro	Increases shot accuracy when firing while jumping.
Roller weapons	Increases damage.
Slosher	Increases maximum damage.
Sloshing Machine	Increases ink coverage.
Sploosh-o-matic	Increases damage.
Splash-o-matic	Increases damage.
Splat Brella	Speeds up Brella canopy regeneration.
Splat Charger	Increases damage.
Splattershot	Increases shot accuracy when firing while jumping.
Splattershot Jr.	Increases ink coverage.
Splattershot Pro	Increases damage.
Squeezer	Increases damage.
Tenta Brella	Increases Brella canopy durability.
Tri-Slosher	Increases maximum damage.
Undercover Brella	Speeds up Brella canopy regeneration.