Dunlop K990 Front MX/Off-Road Tire, 70/100-21, 44M Tube Type

Offroad vintage racing enthusiasts might recall the Dunlop® K990, the tire of choice for many racers in the early 1990s. The K990 offers cutting edge performance, and is being reintroduced today as the K990 to offer vintage riders an authentic choice in tires.

• Ideal for small-bore vintage bikes of 100/125cc classes
• Modern Construction
• Classic pattern

The Dunlop K990 front tire brings authentic vintage racing performance to small-bore off-road motorcycles. Originally recognized by racers in the early 1990s, the Dunlop K990 combines its classic tread pattern with modern tire construction for riders seeking period-correct styling and dependable performance. This front motorcycle tire is designed for vintage bikes in the 100cc and 125cc racing classes.

With a bias-ply construction, black sidewall, and tube-type design, the Dunlop K990 is suited for MX and off-road applications where predictable handling and traction are essential. Its non-directional configuration supports flexible installation, while the 44M load and speed rating provides the performance specification required for its intended use. Part number Dunlop dun45142131 identifies this K990 front tire.

Key Product Specifications and Technical Data

• Brand: Dunlop
• Model: K990
• Part Number: dun45142131
• Tire Size: 70/100-21
• Wheel Position: Front
• Tire Type: MX/Off-Road
• Construction: Bias ply
• Tube Requirement: Tube type

What's Included

• One Dunlop K990 front motorcycle tire

Fitment: Designed for small-bore vintage motorcycles in the 100cc and 125cc classes. Confirm tire size, tube compatibility, wheel position, and manufacturer fitment requirements before installation.

Features:

• Vintage racing design: Recreates the classic Dunlop K990 tread pattern associated with early-1990s off-road racing.
• Small-bore motorcycle fitment: Ideal for vintage motorcycles used in 100cc and 125cc racing classes.
• Modern construction: Combines authentic appearance with updated tire construction for dependable use.
• MX and off-road performance: Bias-ply design and 44M rating support the handling demands of compatible front-wheel applications.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1
Construction: Bias
Directional: No
Load Index: 44.00
Load Speed: 44M
Sidewall: BSW
Tire Model: DUN K990 Tires
Aspect Ratio: 100.00
Speed Rating: M
Tire Type: MX/Offroad
Wheel Diameter: 21.00
Wheel Position: Front
Tire Width: 70.00
Tube Type: Tube Type