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Compare Disc Golf Discs

Pick two or more discs and see exactly how they differ - flight, feel, distance, and price, side by side.

Build your comparison2 of 4 discs · ready
Birdie Disc Golf SupplyUltraMidrange5/3/0/3
KastaplastJärnMidrange4.5/3/0/3

Ultra vs Järn

How Ultra and Järn compare on flight numbers, feel, distance, and price.

Key differences

SpeedUltra 5 vs Järn 4.5Height1.6 vs 1.8 cm (-0.2)Rim width1.5 vs 1.3 cm (+0.2)

Flight Paths

Overhead view · right-hand backhand

0100200300400500Distance (ft)Fade / Turn
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Tap a disc to show or hide its path. Estimated from flight numbers.

Birdie Disc Golf SupplyUltraMidrange
KastaplastJärnMidrange
Flight Numbers
SpeedRim & velocity
Ultra
5
Järn
4.5
GlideStays aloft
Ultra
3
Järn
3
TurnHigh-speed bend
Ultra
0
Järn
0
FadeLow-speed hook
Ultra
3
Järn
3
Specifications
Spec
Birdie Disc Golf Supply
Ultra
Kastaplast
Järn
Flight rating≠
5/3/0/3
4.5/3/0/3
Stability
Very overstable (+3)
Very overstable (+3)
Beginner score≠
40/100
42/100
Est. carry≠
274 ft
264 ft
Type
Midrange
Midrange
Recommended skill
Intermediate, Advanced
Intermediate, Advanced
Diameter≠
21.4 cm
21.3 cm
Height≠
1.6 cm
1.8 cm
Rim depth≠
1.2 cm
1.4 cm
Rim width≠
1.5 cm
1.3 cm
Max weight≠
174 g
176 g
Bead
Beadless
Beadless
Plastics
0
0
PDGA Approved
No
No
On Amazon
Not on Amazon
Not on Amazon
Price from
Not listed
Not listed
The Verdict

Ultra or Järn?

Main difference: speed (Ultra 5 vs Järn 4.5). The Ultra has a higher distance ceiling but needs more arm speed; the Järn is easier to control.

Ultra: Very overstableJärn: Very overstable
Where to buy
Ultra
See retailer
Buy atAffiliate link
Järn
See retailer
Buy atAffiliate link

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FAQ

Is the Ultra or Järn more overstable?

They are equally stable (both +3) - turn 0/0, fade 3/3.

Should a beginner pick the Ultra or Järn?

A beginner is better off with the Järn (beginner score 42/100 vs 40/100) - lower speed and more turn make it easier to control.

What is the difference between the Ultra and Järn?

Main difference: speed (Ultra 5 vs Järn 4.5). The Ultra has a higher distance ceiling but needs more arm speed; the Järn is easier to control.

View each disc

Birdie Disc Golf Supply Ultra
Birdie Disc Golf Supply
Ultra
5 / 3 / 0 / 3
View disc →
Kastaplast Järn
Kastaplast
Järn
4.5 / 3 / 0 / 3
View disc →
Birdie Disc Golf Supply Ultra vs Kastaplast Järn: Flight Num