At DMG Motorsports, we present the Shinko 421 Series Front/Rear 4.00-8 55J Bias TT Tire (SR421 4.00-8) — a purpose-built mini bike tire engineered to deliver dependable grip and durability across a variety of terrains. Whether you're running a vintage Honda Mini Trail, a Kawasaki KV75/MT-1, or another small-displacement trail bike, this Shinko tire is designed to handle the job as a front or rear fitment. Its tough nylon carcass and dimpled knob tread work together to bite into dirt, gravel, and loose surfaces, while the open tread pattern is engineered to shed mud and debris to keep traction consistent even when conditions get messy.

Rated 55J for a max load of 481 lbs and a top speed of 62 mph, this bias-ply, tube-type (TT) tire is sized 4.00-8 and carries DOT approval for legal off-highway use. It's built as an off-road and trail tire rather than a highway tire, so it's best suited to mini bike trail riding, scooters, and similar off-road applications rather than sustained pavement use.

Features:

• Tough nylon carcass construction for durability on rough terrain
• Dimpled knob tread design provides reliable traction across varied terrain
• Open tread pattern sheds mud and debris to maintain grip in muddy conditions
• Bias-ply, tube-type (TT) construction
• 4.00-8 size fits as front or rear tire on mini bikes and scooters
• 55J load/speed rating: max load 481 lbs, max speed 62 mph
• DOT approved for off-road/trail use
• Not intended for extended highway use
• Ideal for Honda Mini Trail, Kawasaki KV75/MT-1, and similar mini bikes