I want to change the setup of my bike from 11-28 to 11-34. I am unsure if it fits my bike or not and i do not understand which cassette I would need to get. Maybe my setup is maxed out at 11-32?

Those are my specs:

DRIVETRAIN

SHIFT LEVERS

Shimano 105 5800, 11-speed

FRONT DERAILLEUR

Shimano 105 5800, 11-speed, braze-on

REAR DERAILLEUR

Shimano 105 5800, 11-speed

CASSETTE

Shimano 105 5800, 11-speed, 11-28t

CRANKSET

Praxis Alba

CHAINRINGS

50/34T

BOTTOM BRACKET

Praxis

CHAIN

KMC X11, 11-speed

This is the exact bike I am talking about:

https://www.specialized.com/lu/de/tarmac-sl4-sport/p/115443?color=208582-115443