MICHELIN - 89343 - Ultra Heavy Duty Inner Tube
Riders who keep flatting standard tubes on enduro and MX terrain will find real peace of mind in the Michelin Ultra Heavy Duty inner tube, built with a 4mm wall — noticeably thicker than a standard tube — for enhanced protection against punctures and pinch flats. Reinforced specifically for off-road applications, it's sized for an 18-inch rim and mounts front or rear with a TR-4 round-base or center metal threaded valve stem, giving off-road riders one less thing to worry about mid-ride.
Features
- Provide enhanced protection against punctures and pinch flats
- Reinforced tubes for off-road applications
- Feature a 4 mm wall thickness
Specs
- Rim Diameter: 18"
- Duty: Ultra Heavy Duty
- Riding Style: Off-Road
- Tube Thickness: 4.0 mm
- Inner Tube Valve Stem Type: TR-4 (Round Base)
- Mounting Position: Front/Rear
- Product Name: Inner Tube
- Type: MX
- Inner Tube Valve Stem Type: Center Metal Valve (Threaded/Nuts)
- Type: Enduro
- Tube Fits Tire Size: 140/80-18
- Type: Off-Road
- Units: Each
- Material: Rubber
Frequently Asked Questions - MICHELIN - 89343 - Ultra Heavy Duty Inner Tube - Fits 140/80-18
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
