- Low stock - 10 items left
- Backordered, shipping soon
- Flat $10 U.S. shipping, free over $100
- Ships from one of three U.S. warehouses
- Secure checkout
⚠
WARNING: Cancer and Reproductive Harm —
www.P65Warnings.ca.gov
















The Bridgestone Motocross M40 is a bias-ply, tube-type mini-motocross tire built for 50cc bikes running soft terrain: loose dirt, sand, and mud. It uses a widely spaced, rounded knob pattern designed to self-clean in wet, sticky mud and a wraparound knob profile for climbing traction out of ruts. Bridgestone's own catalog lists the true M40 only in 2.50-10 (front/rear) and a related 2.75-10 rear fitment. It is a competition tire and is not intended for public-road use.
| Part Number | 65781 |
|---|---|
| Use Case | Kids/mini motocross, soft terrain, 50cc |
| Construction | Bias-ply |
| Tread Pattern | Soft-terrain block/knobby, wide-spaced self-cleaning tread |
| Tube or Tubeless | Tube Required |
| Load & Speed Rating | 33J |
Verified from Garamoto’s catalog & fitment data.