TUSK Motorcycle Inner Tube 100/100x18 — Severe Duty 3mm Butyl with TR-4 Valve, Heavy-Duty Puncture Resistance

The Tusk Severe Duty 3mm motorcycle inner tube is a heavy-duty butyl replacement tube built for puncture resistance and rugged off-road use.

If your tube is pinched, punctured, or simply not up to rough trails, the Tusk Severe Duty 3mm inner tube offers a straightforward upgrade. Constructed from a thicker 3 mm butyl compound and fitted with a TR-4 (standard) valve stem, this 100/100x18 tube is designed to handle impacts, thorns, and gritty terrain better than standard 1.8–2.5 mm tubes while remaining compatible with common 18-inch rims.

How does this thicker tube improve durability on rough trails?

The increased 3 mm wall thickness gives greater resistance to punctures from rocks, thorns, and pinch flats, reducing the chance of roadside failures. Reinforced butyl retains air well and tolerates repeated impacts without splitting.

• 3 mm butyl rubber for extra puncture resistance
• Reduced pinch-flat risk under lower pressures
• Better cut and abrasion tolerance than standard tubes

Will this tube fit my bike’s 100/100x18 tire and rim?

Yes — the Tusk Severe Duty 100/100x18 tube is sized specifically for tires and rims in that nominal dimension range. Its TR-4 valve stem fits most tubed motorcycle rims without special adapters.

• Marked 100/100x18 for correct tire match
• Standard TR-4 valve stem length and diameter
• Compatible with typical 18-inch motorcycle rims

How does the butyl material affect performance and maintenance?

Butyl rubber balances elasticity and airtightness: it holds pressure well and resists slow leaks, making it a practical choice for longer rides and infrequent pump checks. It also tolerates temperature changes and repeated patching when necessary.

• High air retention for longer intervals between inflations
• Patches adhere reliably to butyl if repaired
• Durable under heat cycles and off-road stress

What should I expect when installing and using this replacement tube?

Installation follows the same steps as any tubed tire: unseat bead, remove old tube, inspect tire for debris, slightly inflate new tube to avoid pinches, and reseat the bead. After mounting, set the tire pressure recommended for your bike and terrain for best protection and handling.

• Inspect tire interior for sharp objects before fitting
• Slight initial inflation helps prevent pinching during installation
• Use recommended ride pressures to balance traction and puncture protection

Who is this for: Riders who push their motorcycles off-road, commuters who want a tougher spare, and anyone who needs a reliable replacement inner tube for 100/100x18 tires will benefit from the Tusk Severe Duty 3mm tube. It’s especially suited to dirt bikes, dual-sport bikes, and small-displacement off-road machines where added thickness prevents frequent flats without adding excessive weight.