LONGBOARD SUP
UNDISPUTED AS THE MOST SUCCESSFUL AWARD-WINNING LONGBOARD SUP
Manufacturer name: STB LONGBOARD SUP
- 🏆 2 x Best Performance Longboard Awards
- 🏆 3 x Bali Longboard SUP Revolution Champion
From ₩2,750,000
Prices are Starboard's recommended retail prices in Korean won (rounded down to the nearest ₩10,000). Please contact us for the actual price and stock.
Loading options…
Product overview
A high-performance Longboard SUP that is versatile, incredibly responsive, and smooth to turn. The most successful, award-winning Longboard SUP, proven in competition and loved by riders worldwide.
WHAT’S NEW?
- NEW Graphics
Sizes · Prices
| Size · specification | Item ID | Price |
|---|---|---|
STB SUP LONGBOARD 10'0”X29” 133L XTEC CARBONSpecification notesWith a little extra stability from 10 additional liters of a float than its predecessor, the 10’0”x29” is, without doubt, a high-performance longboard. The longer length from the 10’0” carries speed down the line, with just the right amount of swing weight to flow through turns. | 2010270301009 | ₩2,750,000 |
STB SUP LONGBOARD 10'0”X31” 151L XTEC CARBONSpecification notes10’0″ x 31″ The added thickness in the standing and wider width make for a super stable ride, yet with the same bite and response that make this model perform so well. A favorite for heavier riders of those hunting more stability. | 2010270301011 | ₩2,750,000 |
STB SUP LONGBOARD 9'0”X28” 105L XTEC CARBONSpecification notes9’0″ x 28″ This size sets the benchmark for the entire range, as this was the master that was used to sign off the range. A favorite for riders up to 85kg, the size gives you the longboard style or riding yet unlocks shortboard performance from the tail. A must-try! | 2009270301016 | ₩2,750,000 |
STB SUP LONGBOARD 9'5”X30” 124L XTEC CARBONSpecification notes9’5″ x 30″ This size gives the best of both worlds, sitting between 10’0” and 9’0” in length, it gives all the benefits from the long rail yet with slightly faster rotations through turns. The 30” width is a solid platform for those who are intimidated by the 28” or 29”. | 2009270301018 | ₩2,750,000 |
STB SUP LONGBOARD 10'0”X29” 133L CRSpecification notesWith a little extra stability from 10 additional liters of a float than its predecessor, the 10’0”x29” is, without doubt, a high-performance longboard. The longer length from the 10’0” carries speed down the line, with just the right amount of swing weight to flow through turns. | 2010270301008 | ₩4,640,000 |
STB SUP LONGBOARD 10'0”X31” 151L CRSpecification notes10’0″ x 31″ The added thickness in the standing and wider width make for a super stable ride, yet with the same bite and response that make this model perform so well. A favorite for heavier riders of those hunting more stability. | 2010270301010 | ₩4,640,000 |
STB SUP LONGBOARD 9'0”X26” 92L CRSpecification notes9’0″ x 26″ For lighter and advanced riders up to 75kg, the 26” model is the go-to for Benoit and Zane. The narrower width helps fit in more critical sections of the waves, generates faster speeds down the line and is ultra-reactive to foot pressure. | 2009270301014 | ₩4,640,000 |
STB SUP LONGBOARD 9'0”X28” 105L CRSpecification notes9’0″ x 28″ This size sets the benchmark for the entire range, as this was the master that was used to sign off the range. A favorite for riders up to 85kg, the size gives you the longboard style or riding yet unlocks shortboard performance from the tail. A must-try! | 2009270301015 | ₩4,640,000 |
STB SUP LONGBOARD 9'5”X30” 124L CRSpecification notes9’5″ x 30″ This size gives the best of both worlds, sitting between 10’0” and 9’0” in length, it gives all the benefits from the long rail yet with slightly faster rotations through turns. The 30” width is a solid platform for those who are intimidated by the 28” or 29”. | 2009270301017 | ₩4,640,000 |
Description
WHAT CAN YOU EXPECT FROM THE SHAPE?
The Longboard SUP’s shape blends tradition with innovation, incorporating a refined rocker profile for smooth nose riding and fast, controlled turns. Thin rails enhance carving precision, while a slightly domed deck maintains volume and stability. The board’s balanced outline ensures speed down the line while keeping enough width in the nose for excellent control when hanging ten.

Key Features
THIN RAILS
The thin rails offer greater control and responsiveness during maneuvers. In the nose, they help grip the wave face while nose riding, and in the tail, they require less effort to turn.
SLIGHT DOMED DECK
The volume is fuller in the middle of the board to compensate for the thin rails, while maintaining a moderately flat standing area for comfort and stability.
ROCKER CURVE
A moderate nose kick prevents catching in turns yet carries speed when nose riding, while the tail kick unlocks high-performance surfing, delivering snappy performance when riding on the tail.
BOTTOM SHAPE
A slight nose concave delivers speed riding toes on the nose, merging into a double concave midsection for rail-to-rail turns, and ending with a vee tail for snappy maneuvers. The new shape enhances flow and feels forgiving in the process.
FINS
With a unique 5-degree fin angle, the fin setup offers playful performance and excellent drive on the wave.
Carbon Reflex comes with Prepreg Carbon fins. Xtec comes with Armacore fins.
OUTLINE SHAPE
The nose outline keeps enough width for control and stability when nose riding, while being forgiving to limit catching when rotating through turns. The midsection is fairly parallel for down-the-line speed, while the pulled-in tail pivots the board through maneuvers.
Available Sizes
10’0″ x 31″ / 151 L LONGBOARD SUP
- Length: 10’0″ / 365.8 cm
- Width: 31″ / 86.4 cm
The added thickness in the standing and wider width make for a super stable ride, yet with the same bite and response that make this model perform so well. A favorite for heavier riders of those hunting more stability.
Available Constructions:
- Carbon Reflex (ex. Acute Custom Carbon)
- Xtec Carbon (ex. Limited Series)
10’0″ x 29″ / 133 L LONGBOARD SUP
- Length: 10’0″ / 304.8 cm
- Width: 29″ / 73.7 cm
With a little extra stability from 10 additional liters of a float than its predecessor, the 10’0”x29” is, without doubt, a high-performance longboard. The longer length from the 10’0” carries speed down the line, with just the right amount of swing weight to flow through turns.
Available Constructions:
- Carbon Reflex (ex. Acute Custom Carbon)
- Xtec Carbon (ex. Limited Series)
9’5″ x 30″ / 124 L LONGBOARD SUP
- Length: 9’5″ / 287.0 cm
- Width: 30″ / 76.2 cm
This size gives the best of both worlds, sitting between 10’0” and 9’0” in length, it gives all the benefits from the long rail yet with slightly faster rotations through turns. The 30” width is a solid platform for those who are intimidated by the 28” or 29”.
Available Constructions:
- Carbon Reflex (ex. Acute Custom Carbon)
- Xtec Carbon (ex. Limited Series)
9’0″ x 28″ / 105 L LONGBOARD SUP
- Length: 9’0″ / 274.3 cm
- Width: 28″ / 71.1 cm
This size sets the benchmark for the entire range, as this was the master that was used to sign off the range. A favorite for riders up to 85kg, the size gives you the longboard style or riding yet unlocks shortboard performance from the tail. A must-try!
Available Constructions:
- Carbon Reflex (ex. Acute Custom Carbon)
- Xtec Carbon (ex. Limited Series)
9’0″ x 26″ / 92 L LONGBOARD SUP
- Length: 9’0″ / 274.3 cm
- Width: 26″ / 66 cm
For lighter and advanced riders up to 75kg, the 26” model is the go-to for Benoit and Zane. The narrower width helps fit in more critical sections of the waves, generates faster speeds down the line and is ultra-reactive to foot pressure.
Available Constructions:
- Carbon Reflex (ex. Acute Custom Carbon)
Constructions

CARBON REFLEX
PREMIUM PERFORMANCE CONSTRUCTION
Carbon Reflex is our premium SUP surf construction, designed for maximum response, controlled flex, and fast recoil. It delivers a light, lively feel underfoot, reacting instantly through turns while staying strong and composed.
EPS core density is tuned by board size, with lighter cores paired with thermoformed PVC rail stringers to maintain strength without sacrificing flex. High-grade biaxial carbon fine-tunes flex and control, allowing the board to load smoothly and spring out of turns.
- Rapid recoil from 45° biaxial carbon
- PVC rail stringers used with lighter EPS cores
- EPS core density tuned by board size
- Targeted standing area reinforcements
- 0.6mm Australian pine for heel durability
- Full carbon reinforcement for strength at low weight
- Full Carbon Reinforcement
- Carbon reinforcements maximise strength while keeping overall weight low.

XTEC CARBON
CORE PERFORMANCE CONSTRUCTION
XTEC Carbon is a core performance construction built around Carbon Load Frame Technology, balancing weight, durability, and performance. Precision placed UD carbon controls flex and improves recoil through turns.
An expanding epoxy resin system improves internal bonding, while T-Stringers and Wood Omega Stringers reinforce high-stress areas. The result is a responsive, durable construction designed for everyday performance.
- Carbon Load Frame Technology with UD carbon
- Expanding epoxy resin for internal bonding
- Twin T-Stringers for increased total breakage strength.
- Wood Omega Stringers deck and bottom.
- Reinforcements in standing area, fins, nose, tail, and rails
SPECIFICATIONS
| Model - Longboard SUP | SUP LONGBOARD 9'0”X26” | SUP LONGBOARD 9'0”X28” | SUP LONGBOARD 9'5”X30” | SUP LONGBOARD 10'0”X29” | SUP LONGBOARD 10'0”X31” |
|---|---|---|---|---|---|
| Consruction | Carbon Reflex | Carbon Reflex Xtec Carbon | Carbon Reflex Xtec Carbon | Carbon Reflex Xtec Carbon | Carbon Reflex Xtec Carbon |
| Max Rider Weight | Up to 75 kg | Up to 85 kg | Up to 85 kg | Up to 95 kg | Up to 110 kg |
| Length | 9'0" / 274.3 cm | 9'0" / 274.3 cm | 9'0" / 274.3 cm | 10'0" / 304.8 cm | 10'0" / 304.8 cm |
| Width | 26" / 66 cm | 28" / 71.4 cm | 28" / 71.4 cm | 29" / 74.2 cm | 31" / 79 cm |
| Thickness | 3.7" / 9.4 cm | 3.9" / 9.9 cm | 3.9" / 9.9 cm | 4.3" / 10.9 cm | 4.6" / 11.7 cm |
| Tail Width | 15.7" / 39.9 cm | 16.8" / 42.8 cm | 16.8" / 42.8 cm | 16.8" / 42.7 cm | 17.5" / 44.6 cm |
| Volume | 92 L | 105 L | 105 L | 133 L | 151 L |
| Fin Box | Thruster | Thruster | Thruster | Thruster | Thruster |
| Fins | Center 185 Carbon/Side 4.5"Carbon | Carbon Reflex: Center 185 Carbon/Side 4.5"Carbon Xtec Carbon: Center 185 Armacore/Side 4.5"Armacore | Carbon Reflex: Center 185 Carbon/Side 4.5"Carbon Xtec Carbon: Center 185 Armacore/Side 4.5"Armacore | Carbon Reflex: Center 185 Carbon/Side 4.5"Carbon Xtec Carbon: Center 185 Armacore/Side 4.5"Armacore | Carbon Reflex: Center 185 Carbon/Side 4.5"Carbon Xtec Carbon: Center 185 Armacore/Side 4.5"Armacore |
| Weight (Tolerance +/- 5%) | - | - | - | - | - |
| SUP LONGBOARD | ||
|---|---|---|
| Item name | Item code | EAN code |
| STB SUP LONGBOARD 10'0”X29” 133L CR \ S24D27 | 5638604313 | 8859890203976 |
| STB SUP LONGBOARD 10'0”X29” 133L XTEC CARBON \ S24D27 | 5638604564 | 8859890203983 |
| STB SUP LONGBOARD 10'0”X31” 151L CR \ S24D27 | 5638604315 | 8859890203990 |
| STB SUP LONGBOARD 10'0”X31” 151L XTEC CARBON \ S24D27 | 5638604566 | 8859890204003 |
| STB SUP LONGBOARD 9'0”X26” 92L CR \ S25D27 | 5638604308 | 8859890203921 |
| STB SUP LONGBOARD 9'0”X28” 105L CR \ S24D27 | 5638604309 | 8859890203938 |
| STB SUP LONGBOARD 9'0”X28” 105L XTEC CARBON \ S24D27 | 5638604560 | 8859890203945 |
| STB SUP LONGBOARD 9'5”X30” 124L CR \ S24D27 | 5638604311 | 8859890203952 |
| STB SUP LONGBOARD 9'5”X30” 124L XTEC CARBON \ S24D27 | 5638604562 | 8859890203969 |











