Target Japan - Kosuzu Iwao Diamond G4 - 90% Tungsten Darts (SP)

DIAMOND GEN 4 – Precision Meets Brilliance

Developed in collaboration with Kosuzu Iwao (いわお小鈴), the DIAMOND GEN 4 reimagines the signature “Diamond” concept with a refined balance of style, control, and performance. This fourth-generation model reflects Kosuzu’s evolving presence—confident, bold, and radiant both on and off the stage.

Triple Diamond Ring Design

At the core of the DIAMOND GEN 4 is its distinctive triple diamond ring motif, inspired by stacked jewellery. Each of the three rings features unique groove depths and patterns, creating varied grip textures that enhance control while reducing slip.

This layered structure allows players to naturally locate their grip position, supporting consistency and a stable release. The result is a design that not only performs with precision but also carries a sleek, jewellery-inspired aesthetic.

Signature Red Line Accents

Vivid red line detailing brings a modern edge to the barrel, reflecting Kosuzu’s signature colour palette and the bold identity of the DIAMOND series. Beyond visual impact, these accents represent energy, confidence, and intensity—mirroring the player’s competitive mindset.

Grip & Shape – Built for Control

The straight barrel profile offers a well-balanced, versatile feel that adapts easily to different throwing styles, making it suitable for both newer players and experienced competitors.

• Front Section: Features softened shark cuts, delivering a smooth yet responsive grip for controlled release.

• Centre Section: Combines diamond-pattern cuts with ring grooves, providing clear tactile feedback and a distinctive visual identity.

• Rear Section: Alternating mild shark cuts create a moderate yet secure grip, helping maintain consistency and control.

Every section of the barrel is carefully engineered to provide stability across multiple grip positions, ensuring reliability throughout each throw.

A Fusion of Style and Performance

The DIAMOND GEN 4 continues the legacy of the series by merging competitive functionality with fashion-inspired design. Its sleek black finish, striking red accents, and geometric detailing create a look that is both powerful and refined.

Designed for players who value both performance and expression, the DIAMOND GEN 4 delivers precision, versatility, and standout style in every game.

Technical Specification
Tungsten (%): 90%
Thread: 2BA

Barrel Dimensions

• 22g - 6.8mm x 49.0mm
• 24g - 7.0mm x 49.5mm

Dart Profile
Weight Distribution: Front
Barrel Profile (%): Tapered
Front Profile: Tapered 
Point Type: Silver Effect High Tensile

Dart Grip Characteristics
Grip Level: 4 (1 = Smooth, 5 = Aggressive)
Grip Zone: Full Length