How much air should I put in my tires?

It is always recommended to use the pressures advised by your motorcycle manufacturer. These can be find in the motorcycle handbook and the tire specfication section.

Why do tires lose pressure in cold weather?

In cold weather, tire pressure drops because the air inside contracts, so it’s important to check and maintain proper pressure for safety and performance.

What do the numbers on tires mean?

The numbers on a motorcycle tire show key details like its size, fit, and performance ratings, including width, aspect ratio, rim size, load capacity, and speed rating.

Do motorcycle tires need to be balanced?

An unbalanced motorcycle tire can cause vibrations, uneven wear, and reduced stability, so proper balancing is important for a smoother, safer ride and longer tire life.

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Pirelli MT 21 Rallycross 120/80-18 Rear Tire - DOT Dual-Sport/Enduro

Product ID: 742180345

Details

Brand
Pirelli
Load Capacity
584 pounds
Load Index
62
Rim Size
18 inches
Section Width
4.7 inches
Size
120/80-18

🌍DOT-approved for on/off-road use

🏍️120/80-18 size for versatile fit

🛡️10-ply tear-resistant compound

¥85244

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🏁 Grip the wild, own the road — Pirelli MT 21 Rallycross.

ADVENTURE READY WITH STYLE - Includes exclusive Pirelli keychain—because your gear should look as good as it performs.
ENDURANCE DRIVEN DURABILITY - 10-ply reinforced carcass engineered to resist tears and punctures in extreme conditions.
PRECISION HANDLING AT SPEED - Flexible yet stable design ensures razor-sharp control even at high velocity.
UNMATCHED DUAL SPORT VERSATILITY - Seamlessly conquer both rugged trails and smooth highways with one tire.
OPTIMIZED TREAD FOR EVERY TERRAIN - Asymmetrical tread pattern delivers superior grip on dirt, gravel, and asphalt alike.

The Pirelli MT 21 Rallycross 120/80-18 Rear Tire is a DOT-approved, 10-ply dual-sport tire designed for adventure and enduro riders. Featuring an asymmetrical tread optimized for dirt, gravel, and paved roads, it offers exceptional grip, tear resistance, and high-speed stability. Built to handle up to 584 pounds with a flexible yet durable carcass, this tire ensures reliable performance year-round, making it the ultimate choice for riders who demand versatility and toughness in every ride.

Specifications

ASIN	B0FD4BRRKM
Automotive Fit Type	Universal Fit
Best Sellers Rank	#969,995 in Automotive ( See Top 100 in Automotive ) #171 in Motocross Tires
Brand Name	Pirelli
Construction Type	Bias
Customer Reviews	5.0 5.0 out of 5 stars (15)
Included Components	(1) Pirelli MT 21 Rallycross 120/80-18 Rear Motorcycle Tire (1) Pirelli Keychain
Item Diameter	25.6 inches
Item Highlight	DOT-approved dual-sport tire. Tread for off-road & rally. High-performance grip. Fits adventure & dirt bikes. With Keychain.
Load Capacity	584 pounds
Load Index	62
Manufacturer	Pirelli
Manufacturer Part Number	P01-100 3988900
Manufacturer Warranty Description	https://www.pirelli.com/tires/en-us/motorcycle/tire-warranty
Model Number	P01-100 3988900
Number of Packs	1
Ply	10-Ply
Rim Size	18 inches
Seasons	Year Round
Section Width	4.7 inches
Size	120/80-18
Speed Rating	R
Tire Aspect Ratio	80
Tire Diameter	25.6 inches
Tread Depth	11 millimeters
Tread Type	Asymmetrical
UPC	810196671140
Unit Count	1 Count
Vehicle Tire ISO Metric Size Description	120/80-18

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