• Zračnica ULIP 20×4.0 / 3.50-16 za široko e-kolo – 1/6
  • Zračnica ULIP 20×4.0 / 3.50-16 za široko e-kolo – 2/6
  • Zračnica ULIP 20×4.0 / 3.50-16 za široko e-kolo – 3/6
  • Zračnica ULIP 20×4.0 / 3.50-16 za široko e-kolo – 4/6
  • Zračnica ULIP 20×4.0 / 3.50-16 za široko e-kolo – 5/6
  • Zračnica ULIP 20×4.0 / 3.50-16 za široko e-kolo – 6/6

ULIP 20×4.0 / 3.50-16 inner tube for fat bike

Store information
Viewing / personal pickup is available Monday to Saturday.
Opening hours:Mon–Fri: 9:00–19:00
Sat: 10:00–16:00
Sun & public holidays: CLOSED
Address: Tržaška cesta 222, 1000 Ljubljana
Phone: +386 30 771 787
Email: [email protected]
19,90 €
19,90 €

Estimated delivery

Contact us to confirm delivery for this variant.
  • American Express
  • Apple Pay
  • Bancontact
  • Google Pay
  • iDEAL Wero
  • Klarna
  • Maestro
  • Mastercard
  • MobilePay
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

ULIP inner tube with 20 × 4.0 and 3.50-16 markings

The wide ULIP inner tube features a straight Schrader valve and double size marking 20 × 4.0 / 3.50-16. It is designed for compatible tires and rims of a wide wheel assembly.

Features and fitment

  • ULIP 20 × 4.0 / 3.50-16; straight Schrader valve.

Approximate dimensions

  • Outer diameter of inner tube: 565 mm.
  • Inner diameter of inner tube: 408 mm.
  • Width of inner tube: 80.9 mm.
  • Valve length: 30 mm.

The straight valve is approximately 30 mm long. When choosing, compare the full dimensional marking on your old inner tube and tire, and check the valve access after installing the wheel.

Replacement without pinching the inner tube

  • Before replacing, check the tire or rim for the cause of the puncture. A foreign object, sharp edge, or damaged rim tape can immediately damage the new inner tube as well.
  • Inflate the inner tube slightly, align the valve with the hole, and distribute it evenly within the tire. When seating the bead, do not pinch it with installation tools.
  • Inflate to the pressure allowed for the wheel assembly. Check valve position and sealing; do not use valve caps to stop leaks.

Spare parts by brand

Why choose EVOLT?

Tržaška cesta 222, 1000 Ljubljana

Our showroom in Vič, Ljubljana, offers 200 m² of space, bringing sales, servicing and spare parts together in one place.

You can view and try out products in person, and after purchase we provide local servicing, expert support and prompt spare-parts delivery.

MON–FRI: 9:00–19:00
SAT: 10:00–16:00

1,000+ spare parts

In stock in Ljubljana

EVOLT is a specialized provider of spare parts for electric scooters, e-bikes and other electric vehicles.

Discover a wide range of quality spare parts and components in stock in Slovenia with fast delivery in 1–2 working days.

We offer reliable supply for both end customers and business partners, workshops and retailers – with options for retail and wholesale.

Blog posts

Stay up-to-date with news in the field of electric micromobility.
Read more

Do you have more questions about ULIP 20×4.0 / 3.50-16 inner tube for fat bike?

Get in touch