I received a Bora Ultra Two and an 80 from a customer.
Like the Bullet and others, when you go to an 80mm high rim for the rear wheel
the number of spoke bundles decreases by one, making it 18H.
Since it would be difficult to purchase front and rear wheels individually,
I'm not sure how the customer managed to acquire this particular combination.
If they managed to get this combination matched to the same year, then it's definitely 2014.
The Bora Ultra Two (TWO) model existed before the 35 and 80 came out,
so without any special notes it would always have a 50mm high rim,
but 2014 was the year the 35 and 80 debuted alongside the traditional Two.
In 2014:
BORA ULTRA 80 external nipples
BORA ULTRA TWO internal nipples
BORA ULTRA 35 external nipples
BORA ONE internal nipples
BORA ONE 35 external nipples
were the specifications.
The new rim height models came with external nipples.
Then in 2015:
BORA ULTRA 80 external nipples
BORA ULTRA 50 external nipples
BORA ULTRA 35 external nipples
BORA ONE 50 external nipples
BORA ONE 35 external nipples
became the specifications, and the 50mm high rim model got a name change (now called "50").
The 50mm high rim underwent its spec change one year later, in other words.
↑So when you have same-year models,
this particular combination only occurs in 2014.
Like the Bullet and others, when you go to an 80mm high rim for the rear wheel
the number of spoke bundles decreases by one, making it 18H.
Since it would be difficult to purchase front and rear wheels individually,
I'm not sure how the customer managed to acquire this particular combination.
If they managed to get this combination matched to the same year, then it's definitely 2014.
The Bora Ultra Two (TWO) model existed before the 35 and 80 came out,
so without any special notes it would always have a 50mm high rim,
but 2014 was the year the 35 and 80 debuted alongside the traditional Two.
In 2014:
BORA ULTRA 80 external nipples
BORA ULTRA TWO internal nipples
BORA ULTRA 35 external nipples
BORA ONE internal nipples
BORA ONE 35 external nipples
were the specifications.
The new rim height models came with external nipples.
Then in 2015:
BORA ULTRA 80 external nipples
BORA ULTRA 50 external nipples
BORA ULTRA 35 external nipples
BORA ONE 50 external nipples
BORA ONE 35 external nipples
became the specifications, and the 50mm high rim model got a name change (now called "50").
The 50mm high rim underwent its spec change one year later, in other words.
↑So when you have same-year models,
this particular combination only occurs in 2014.