Tusk Ultra Heavy Duty 4mm tube side view highlighting rugged off-road construction for 90/100x21 tires.
Tusk Ultra Heavy Duty 4mm tube close-up of packaging, emphasizing durable build and long lifespan.
Tusk Ultra Heavy Duty 4mm tube side view highlighting rugged off-road construction for 90/100x21 tires.
Tusk Ultra Heavy Duty 4mm tube close-up of packaging, emphasizing durable build and long lifespan.

Tusk Ultra Heavy Duty 4mm Motorcycle Tube – 90/100x21 with TR-4 Valve

Rugged construction for the roughest trails The Tusk Ultra Heavy Duty 4mm Motorcycle Tube is built for...
Vendor: TUSK
Availability: In stock
£58.16
£58.16
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Tusk Ultra Heavy Duty 4mm tube side view highlighting rugged off-road construction for 90/100x21 tires.

Tusk Ultra Heavy Duty 4mm Motorcycle Tube – 90/100x21 with TR-4 Valve

£58.16
Tusk Ultra Heavy Duty 4mm tube side view highlighting rugged off-road construction for 90/100x21 tires.
Tusk Ultra Heavy Duty 4mm tube close-up of packaging, emphasizing durable build and long lifespan.

Tusk Ultra Heavy Duty 4mm Motorcycle Tube – 90/100x21 with TR-4 Valve

£58.16
Description
Description
x

Rugged construction for the roughest trails

The Tusk Ultra Heavy Duty 4mm Motorcycle Tube is built for riders who push through rocky terrain and long days on the bike. Its 4mm-thick inner wall provides extra stiffness and puncture resistance, helping the tire maintain shape under load and during jarring impacts.

Premium materials and enduring performance

Crafted from high-quality butyl rubber, this tube balances elasticity with durability. The thicker wall helps it resist wear from abrasive surfaces while preserving a reliable seal, so you can ride with confidence on varied surfaces.

Smart valve for reliable inflation

The TR-4 valve stem is designed for easy inflation and compatibility with common pumps. Sized for 90/100x21 tires, it helps ensure a secure seal and consistent pressure, even after a rough segment or heat buildup on the trail.

Real-world riding scenarios

Picture off-road climbs, dusty switchbacks, and muddy stretches where flats are common. The extra thickness can help the tube hold pressure more steadily, contributing to a steady ride feel when it matters most.

What you get and how to use it

  • 4mm thick inner tube designed for rough terrain
  • High-quality rubber for durability and resilience
  • TR-4 valve stem for reliable inflation and sealing
  • Compatible with 90/100x21 tires

Tip: Match the tube to the correct tire size and inspect the seal and pressure regularly to maximize life and performance on the trail.

Why riders choose this tube

  • Thick walls offer puncture resistance on rocky paths
  • Durable material stands up to sun, mud, and abrasion
  • Valve design supports quick, easy top-ups

FAQ

Q: What tire sizes does the Tusk Ultra Heavy Duty 4mm Tube fit?

A: Designed for 90/100x21 tires, it fits a common off-road size for many dirt bikes.

Q: What is the TR-4 valve stem and why does it matter?

A: TR-4 provides a reliable seal and easy inflation with standard pumps.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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