FREE SHIPPING ON ORDERS $149+
**SOME RESTRICTIONS APPLY
FREE SHIPPING ON ORDERS $149+
**SOME RESTRICTIONS APPLY
Store Updates
The Bridgestone Battlecross E50 is a premier enduro and off-road tire designed for riders who require massive traction across a wide variety of terrain, from soft loam and mud to hard-baked clay and rocky sections. Developed to meet stringent FIM (Fédération Internationale de Motocyclisme) enduro regulations, it is also fully DOT-approved for highway use, allowing dual-sport and enduro riders to legally connect trail sections on the pavement.
The E50 sets itself apart from traditional knobbies through Bridgestone's proprietary Castle Block technology. Each primary tread block features a secondary, convex block molded directly into its center. This creates additional biting edges that maintain traction even as the tire begins to wear or when navigating incredibly slick surfaces like wet roots and polished rock. Combined with a highly spaced tread pattern that excels at self-cleaning in deep mud, the E50 delivers highly predictable handling and forward drive in unpredictable off-road environments.
Castle Block Technology: Secondary convex blocks molded into the primary knobs provide extra surface area and biting edges for superior grip on hard, slippery surfaces.
Bunker Technology: Strategic recesses at the base of the tread blocks create additional edge grip even when the tire is buried in deep sand, mud, or soft soil.
DOT Approved: Fully road-legal for use on dual-sport motorcycles navigating pavement between off-road trail systems.
FIM Compliant: Meets the strict European FIM tread depth regulations required for official enduro competition.
Self-Cleaning Pattern: Widely spaced knobs prevent mud from packing into the carcass, ensuring consistent traction in wet conditions.
1x Bridgestone Battlecross E50 Tire (Front or Rear, depending on selection)
(Note: This is a Tube Type tire. Heavy-duty inner tubes are sold separately).
Tube Type (TT): Designed exclusively for use with inner tubes. Not compatible with tubeless wheel setups unless utilizing a specialized tubeless conversion system like Tubliss.
Application: Ideal for 250cc to 500cc enduro and dual-sport motorcycles.
The Castle Block Advantage: Traditional knobby tires lose a significant amount of traction on hardpack or wet rocks once the sharp leading edge of the knob wears down. Bridgestone's Castle Block design physically adds a second edge in the center of the block. When the tire deforms under acceleration or cornering loads, that inner block presses down and bites into the terrain, giving you "new tire" grip characteristics much deeper into the tire's lifespan.
Managing DOT Expectations: While the Battlecross E50 is DOT-approved, it is crucial to remember this is a dedicated, FIM-spec dirt tire that happens to be street legal—not a 50/50 dual-sport tire. The tall, aggressive knobs will feel squirmy on the highway, and high-speed pavement riding will accelerate tread wear significantly. Use the pavement to get to the dirt, but keep your tire pressures appropriate for off-road use (typically 12-14 psi with a rim lock) to unlock the tire's true performance.

90/90-21 Front Part Number: 11451
120/90-18 Rear Part Number: 11452
140/80-18 Rear Part Number: 11453
If you have any questions or need help finding what you need for your motorcycle or your next adventure please reach out:
EMAIL US AT tmbrmoto@tmbrmoto.com- OR CALL - 208-254-2044
Our shop is temporarily closed. Check back soon — we'll be back before the next ride.