The DUO Spearhead Ryuki 45S D3 Custom is special collaboration between DUO International and Hokkaido-based trout lure maker D3 Custom Lures.

These limited collaboration colors were developed with input from D3 Custom representative Tomoyuki Fukushi, whose experience targeting wild trout in the rivers of northern Japan helped shape the character of this series.

Built on the proven DUO Spearhead Ryuki 45S platform, this version features the D3 Balancer Single Hook system, which replaces traditional trebles with a carefully balanced single hook setup. This configuration improves landing rates, reduces fish damage, and maintains excellent lure balance during both casting and retrieve.

Despite its compact size, the fixed-weight sinking design allows the Ryuki 45S to cast extremely well. It performs confidently in current and is capable of reaching deeper holding water where larger trout often position themselves.

The aggressive wobble and stable swimming action that the Ryuki series is known for remains intact, making this lure effective for twitching, short jerks, and steady retrieves in rivers and streams.

These exclusive D3 collaboration colors add a unique visual identity to