The World’s First True Radial Bicycle Tire

Radial. Revolutionary. Radical.

Zleen Unveils the Racerunner Radical: The World’s First True Radial Bicycle Tire

Zleen sets a new benchmark in cycling performance with the official launch of the Racerunner Radical, the first-ever true radial bicycle tire. Debuting at the Eurobike Show in Frankfurt, this bold innovation redefines what riders can expect from traction, speed, and durability.

Radical Technology. Game-Changing Results. At the heart of the Racerunner Radical lies Zleen’s pioneering 88° true radial casing — a decisive break from the traditional bias-ply construction. This engineering leap unlocks a set of extraordinary benefits:

• +30% Larger Contact Patch for unmatched grip and precision cornering.
• +70% Higher Inflation Pressure to slash rolling resistance by 40%, maximizing efficiency with every pedal stroke.
• -25% Weight Reduction, weighing in at just 550 grams, without compromising strength or protection.

  Designed with a slim profile and wide tread zone, the Racerunner Radical features a uniquely shaped cross-section that offers superior resistance to cuts and snakebites. Integrated bead-to-bead fabric protection ensures riders stay fast and fearless — whatever the terrain.

  Inspired by Nature. Built for Speed. The Racerunner Radical is more than a tire; it’s a revolution in cycling technology. Drawing from natural principles of efficiency and Zleen’s unmatched manufacturing prowess, it delivers peak performance for riders who demand the future — now.

  Experience Radical. Ride Zleen. Visit us at EUROBIKE 2025, Hall 12.1 Booth A08, for an exclusive first look and feel of what it means to ride truly radial.

  For press inquiries, test rides, or additional materials, please contact:

  petr.vyslouzil@zleen.online

  or see https://racerunner.zleen.online/

New City/Tour tire with Black Neon Reflective Stripe —10 mm Wide Reflective Tape.

The Black Neon 10mm reflective tape is a state-of-the-art design element that blends seamlessly with the tire during daylight, only to reveal its full safety potential at low light. This nearly invisible tape reflects light in all directions (180°) when illuminated, providing maximum visibility and security during dim light rides, making it an essential feature for riders who value both style and safety.

Available patterns and sizes:

Zleen Fly 700 x 45C eReady

Zleen Fly 700 x 40C eReady

Zleen Fly 700 x 35C eReady

Zleen Fly 700 x 32C eReady

Zleen Hornet 26 x 2.00 eReady5

For press inquiries, test rides, or additional materials, please contact:

petr.vyslouzil@zleen.online

or https://zleen.online/media/

New Gravel tire.

• 120 TPI Skinwall casing
• Aramid bead
• Tubeles
• Bead-to-Bead impact damage protected
• Silica gravel compoud
• available sizes:
  • • 700x38C
    • 700x42C
• available sidewall colours:
  • • Beige
    • Grey
    • Black

The grassland rebel.

The solid ground and dust tire. Three rows of fine centerline tread blocks provide for low rolling resistance and smooth ride on gravel and paved paths. Medium high shoulder knobs ensure firm support at cornering and in soft terrains.

Zleen Puma Pro Tubeless and Zleen Puma Race—New Tire for Muddy Terrain

The non-directional wet & muddy tire. This narrow XCM wet and mud expert is designed specifically for moist, rainy weather when self-cleaning and clearance between the tire and frame matter most. Avoiding the tires wrapped in sticky mud rubbing the fork and frame is what sorts out the winners to stand out from the crowd. The rough pattern gives Puma exceptional grip and traction.

Available as well in the Zleen Race range—tires developed exclusively for competitive riders. Benefiting from collaboration with prominent Elite riders, the Zleen Factory Race tires’ design is centered around unparalleled performance at race-grade conditions. Featuring the unique soft race compound and lightweight.

Zleen Puma Pro Tubeless

· Aramid bead

· Tubeless Ready

· 120 TPI Skinwall casing

· Bead-to-Bead impact damage guard

· Soft race compound 47 ShA

Zleen Puma Race

· Aramid bead

· Tubeless Ready

· 120 TPI Skinwall casing

· Soft race compound 47 ShA

The World’s First True Radial Bicycle Tire

Radial. Revolutionary. Radical.

Zleen Unveils the Racerunner Radical: The World’s First True Radial Bicycle Tire

Zleen sets a new benchmark in cycling performance with the official launch of the Racerunner Radical, the first-ever true radial bicycle tire. Debuting at the Eurobike Show in Frankfurt, this bold innovation redefines what riders can expect from traction, speed, and durability.

Radical Technology. Game-Changing Results. At the heart of the Racerunner Radical lies Zleen’s pioneering 88° true radial casing — a decisive break from the traditional bias-ply construction. This engineering leap unlocks a set of extraordinary benefits:

• +30% Larger Contact Patch for unmatched grip and precision cornering.
• +70% Higher Inflation Pressure to slash rolling resistance by 40%, maximizing efficiency with every pedal stroke.
• -25% Weight Reduction, weighing in at just 550 grams, without compromising strength or protection.

  Designed with a slim profile and wide tread zone, the Racerunner Radical features a uniquely shaped cross-section that offers superior resistance to cuts and snakebites. Integrated bead-to-bead fabric protection ensures riders stay fast and fearless — whatever the terrain.

  Inspired by Nature. Built for Speed. The Racerunner Radical is more than a tire; it’s a revolution in cycling technology. Drawing from natural principles of efficiency and Zleen’s unmatched manufacturing prowess, it delivers peak performance for riders who demand the future — now.

  Experience Radical. Ride Zleen. Visit us at EUROBIKE 2025, Hall 12.1 Booth A08, for an exclusive first look and feel of what it means to ride truly radial.

  For press inquiries, test rides, or additional materials, please contact:

  petr.vyslouzil@zleen.online

  or see https://racerunner.zleen.online/

New City/Tour tire with Black Neon Reflective Stripe —10 mm Wide Reflective Tape.

The Black Neon 10mm reflective tape is a state-of-the-art design element that blends seamlessly with the tire during daylight, only to reveal its full safety potential at low light. This nearly invisible tape reflects light in all directions (180°) when illuminated, providing maximum visibility and security during dim light rides, making it an essential feature for riders who value both style and safety.

Available patterns and sizes:

Zleen Fly 700 x 45C eReady

Zleen Fly 700 x 40C eReady

Zleen Fly 700 x 35C eReady

Zleen Fly 700 x 32C eReady

Zleen Hornet 26 x 2.00 eReady5

For press inquiries, test rides, or additional materials, please contact:

petr.vyslouzil@zleen.online

or https://zleen.online/media/

New Gravel tire.

• 120 TPI Skinwall casing
• Aramid bead
• Tubeles
• Bead-to-Bead impact damage protected
• Silica gravel compoud
• available sizes:
  • • 700x38C
    • 700x42C
• available sidewall colours:
  • • Beige
    • Grey
    • Black

The grassland rebel.

The solid ground and dust tire. Three rows of fine centerline tread blocks provide for low rolling resistance and smooth ride on gravel and paved paths. Medium high shoulder knobs ensure firm support at cornering and in soft terrains.