The Bridgestone Battlecross X31 is a rear motocross tire designed for riders who need dependable traction and predictable handling on intermediate terrain. This 120/80-19 63M bias-ply, tube-type tire delivers a purpose-built combination of grip, control, and durability for demanding off-road riding. Its rear-specific construction is engineered to work with the motorcycle’s power delivery, helping provide confident acceleration and stability across changing track conditions. The tire brand is Bridgestone, the tire model is Battlecross X31, and the application is a rear motorcycle fitment.
The Battlecross X31 features a motocross-focused tread design intended to maintain consistent contact with the ground while cornering, braking, and accelerating. Its tread arrangement supports traction on intermediate surfaces where riders encounter a mix of packed soil, loose material, ruts, and changing track texture. The bias construction helps deliver the compliant feel expected from a competition-oriented off-road tire, while the tube-type design is intended for compatible spoked wheel applications that use an inner tube. As with any motorcycle tire, confirm wheel, tube, clearance, load, speed, and terrain requirements before installation.
This Bridgestone rear tire is supplied under manufacturer part number 13850 and vendor part number 13850. The 120/80-19 size is intended for motorcycles configured for a 19-inch rear wheel, while the 63M service description identifies the tire’s rated load and speed classification. The Battlecross X31 is a focused choice for motocross riders seeking reliable performance from a recognized tire manufacturer. For best results, install the tire according to the motorcycle manufacturer’s recommendations, use the proper tube and rim components, and set inflation pressure based on the riding environment and vehicle specifications.
Features:
- Rear motocross tire designed for intermediate terrain
- Bridgestone Battlecross X31 tire model
- 120/80-19 tire size with 63M service description
- Bias-ply construction for compatible off-road motorcycle applications
- Tube-type design for spoked wheels using an inner tube
- Rear-specific tread design supports traction, acceleration, and cornering control
- Manufacturer part number: 13850
- Vendor part number: 13850