The Yikun Bi is the steadier of Yikun’s two 9-speed drivers — the same 9 speed, five glide and two fade as the Hu, with one turn instead of two. That single point is the difference between a shaped S-curve and a mostly straight flight.
It holds the line you give it, the point of turn keeps it from fading out early, and two fade finishes the shot without hooking. Infinite reviewer averages come back at 9 / 5 / -1 / 2, identical to the manufacturer’s numbers and the only Yikun mold in this group with no divergence at all — which makes it the most predictable of the five. Yikun adds one useful note of its own: in the lightweight Tiger Air run the Bi turns further right than it does at standard weights, so plastic and weight choice moves the stability here more than on most molds.
That puts it in the stable fairway slot — the one to throw when the Hu keeps flipping past the gap. One point of turn is not enough for a roller or a deep anhyzer; if you want the flip, the Hu is the disc.
Yikun is a Chinese manufacturer based in Ningbo and the first Asian company to have discs PDGA approved; its lineup is named for Chinese mythology and culture, and the PDGA registers this mold under the characters 毕方. Yikun does not publish an English meaning for the name. The Bi is the newest of Yikun’s molds carried here, approved in December 2021, and is made in Phoenix Line, Dragon Line and the lightweight Tiger Air.
How much the Bi turns and fades depends on how hard it is thrown. These three shapes are drawn from the manufacturer’s numbers, not from measured throws.
Measured by the PDGA when the Bi was certified. Each card names discs that share the number, so you can feel it in the hand.
