KATANA

Name: KATANA
SKU: stb-sup-katana:0
Price: 8000000 KRW

narrow BOX tail ® Patented design by Takuji Araki

Manufacturer name: STB SUP KATANA

₩8,000,000

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SPEED THROUGH CADENCE

The Katana is the signature race board of multiple ISA and ICF World Champion Shuri Araki, designed around a high-cadence paddling style. Developed with his father and coach Takuji Araki, it introduces a racing philosophy focused on precision, efficiency and rhythm, delivering a fast, effortless glide inspired by the speed and sharpness of a katana sword.

4 x🥇 From last month’s Spanish “World Sup Festival ”(25–26 April) competition, held amid strong winds and huge swells, to the Austrian “LAKE ROCKS FESTIVAL”(16-17 May) competition, which took place on a lake with perfectly flat waters.

Shuri Araki achieved a truly significant feat, winning two gold medals each in the Long Distance & Technical events and a total of four gold medals in both races, which were held under completely opposite conditions, using only one “KATANA”

WHAT’S NEW?

All-new race model designed and raced by multiple ISA and ICF World Champion Shuri Araki
Developed around a high-cadence paddling technique, prioritizing rhythm, efficiency and precision
Introduces the narrow Box Tail™ design (patent pending) for improved glide and cadence-driven acceleration
Represents a new racing philosophy, focused on speed through cadence rather than brute-force power
Sits between the Gen R and All Star in the race lineup, offering a unique paddling feel and performance style

KATANA · WORLD CHAMPION

SHURI ARAKI × KATANA | 2026 ICF Long-Distance World Champion

Shuri Araki won the men’s long-distance race at the 2026 ICF SUP World Championships on his KATANA 14′ × 20.5″. His winning time of 1:04:55.82 in Sabaudia, Italy secured a third consecutive ICF long-distance title.

2026 ICF SUP World Championships · Long-distance victory in ItalyHighlights shared by Shuri Araki: a 1:04:55.82 finish on KATANA and his third consecutive ICF long-distance world title.

SHURI ARAKI ↗

Sizes · Prices

KATANA sizes and prices
Size · specification	Item ID	Price
14’0”X20.5” 290L CRS D2 Specification notes The 20.5″ Katana is Shuri Araki’s signature race model, designed for elite paddlers seeking maximum speed through a high-cadence paddling style. The narrow outline and Box Tail™ deliver explosive acceleration and exceptional glide for flatwater and technical racing conditions. D2 technology optimizes the internal structure to reduce weight while maintaining a strong, impact-resistant outer shell. Strategic reinforcements are positioned in key load areas to maintain durability and reliability in demanding race conditions.	2014270101029	₩8,000,000

Description

WHAT CAN YOU EXPECT FROM THE SHAPE?

The Katana is designed for elite racers who paddle at high cadence with precision. It feels fast, light, and highly responsive, with sharp straight-line tracking and excellent stability at speed. The narrow Box Tail™ allows the board to lift and accelerate forward efficiently, encouraging a rhythmic pumping motion rather than long, powerful strokes.

Built for racers aiming to compete at the highest level.

KEY HIGHLIGHTS

Developed around Shuri Araki’s proven high-cadence paddling technique for elite-level efficiency.

A patented tail design that combines straight-line stability with unprecedented maneuverability.

Raced to multiple ISA and ICF world titles by Shuri Araki at the highest level of competition.

Key Features

HIGH-CADENCE RACE DESIGN

Developed around Shuri Araki’s proven high-cadence paddling technique for elite-level efficiency.

WORLD-CHAMPION PROVEN

Raced to multiple ISA and ICF world titles by Shuri Araki at the highest level of competition.

NARROW BOX TAIL™

Patented design by Takuji Araki, Shuri Araki. A unique tail design that lifts and accelerates the board forward, enabling efficient pumping while maintaining strong straight-line stability.

REARWARD STANDING POSITION

Standing area positioned further back to optimise trim and fully engage the Box Tail™, helping generate forward propulsion.

EXTREME STRAIGHT HARD TAIL RAIL EDGES™

Patented design by Takuji Araki, Shuri Araki. Sharp straight rail edges at the tail act like additional little side fins, improving tracking and reducing reliance on the main fin while also enabling sharp turns at high speeds with great pump lift without no lateral sway.

SHARP PIERCING NOSE

Inspired by the Katana sword, the sharp nose slices through water and chop, maintaining speed and control at high cadence.

PARALLEL SPEED OUTLINE

Parallel mid-section improves stability and glide, while the narrow nose and tail increase speed and paddling efficiency.

PROGRESSIVE VEE TAIL

Promotes rail-to-rail roll for more responsive buoy turns and direction changes when surfing or downwinding.

REFINED ROCKER PROFILE

Slightly lower nose and tail rocker than the All Star, combined with added vee to maintain glide and maneuverability.

DUGOUT DESIGN

The dugout lowers the center of gravity, increasing stability and improving control in choppy open-water conditions.

DUAL SIDE DRAINAGE HOLES

Drainage holes quickly evacuate water from the deck, allowing rapid recovery in technical and choppy conditions.

DOUBLE KICK TAIL

It features a unique two-piece pad configuration. The front pad is designed for standard use, while the rear pad is intended for situations where you want the board's tail to "bite" into the water - such as when surfing, or in challenging conditions involving strong winds or choppy water.

MULTI-STAGE VEE BOTTOM

Rounded vee in the nose helps the board glide into bumps. A vee mid-section with slight double concave improves tracking and stability, while progressive tail vee promotes rail-to-rail roll for responsive buoy turns.

MULTIPLE HANDLE POSITIONS

Handles are modular with our screw in system to fine tune handle positioning.

Available Sizes

14’0″ x 20.5″ / 290 L KATANA

Length: 14’0″ / 426.3 cm
Width: 20.5″ / 52 cm
Thickness: 11″ / 28 cm
Tail width: 11.9″ / 30.3 cm
Rider weight: Up to 75 kg
Board weight: 9.8 kg (±5%)

The 20.5″ Katana is Shuri Araki’s signature race model, designed for elite paddlers seeking maximum speed through a high-cadence paddling style. The narrow outline and Box Tail™ deliver explosive acceleration and exceptional glide for flatwater and technical racing conditions.

Available Constructions:

Carbon Reflex Sandwich D2

Constructions

CARBON REFLEX SANDWICH D2

ULTRA-LIGHT RACE PERFORMANCE

Our lightest full Carbon race construction to date, Carbon Reflex D2 is our premium SUP Race construction, designed for maximum stiffness, controlled flex and rapid acceleration. The lightweight structure delivers a lively feel underfoot, responding instantly with every stroke while maintaining the lowest possible weight.

D2 technology optimizes the internal structure to reduce weight while maintaining a strong, impact-resistant outer shell. Strategic reinforcements are positioned in key load areas to maintain durability and reliability in demanding race conditions.

Full Carbon reinforcements further increase structural strength while keeping overall weight extremely low.
Ultra-light 100g Biaxial Carbon for an exceptional strength-to-weight ratio
Multiple Carbon reinforcements on the rails and bottom tune flex and recoil into acceleration
UD 80 Carbon rail band increases stiffness for maximum power transfer
Reinforced nose and tail protect against impact during drafting and racing
Full PVC standing area protects against heel dents at minimal weight
Sharp edges reinforced with lightweight Carbon for added durability

KATANA in detail

KATANA Narrow Box Tail™ profile

KATANA on the water

Scroll horizontally to explore paddling and turns.

KATANA paddling and turns — Starboard photograph 1

KATANA paddling and turns — Starboard photograph 2

KATANA paddling and turns — Starboard photograph 3

KATANA paddling and turns — Starboard photograph 4

KATANA paddling and turns — Starboard photograph 5

KATANA paddling and turns — Starboard photograph 6

KATANA paddling and turns — Starboard photograph 7

STARBOARD TV

Explore KATANA with STARBOARD TV

Explore the design story and the relationship between short, rapid strokes and board shape. Both videos have Korean audio.

▶Play video

01 · What makes Shuri Araki’s race boards different? | KATANA & TSURUGI [Korean dubbing]

Watch on YouTube ↗