EBMX Competition Jackshaft | Surron Ultra Bee

Built for Power. Engineered for Performance. Race-Proven Reliability.

The stock Ultra Bee jackshaft was never designed to handle 50+ kW of power, 90-foot jumps, and aggressive off-road punishment. When you ditch the belt for reliability, the OEM jackshaft quickly becomes the next weak link, leading to:

❌ Snapped secondary sprocket bolts on landings
❌ Ovaled-out bearing seats causing total failure
❌ Bearings falling out due to stress

EBMX solved these issues by designing a high-powered, race-ready jackshaft—built from solid steel with hybrid bearings, a larger diameter, and a splined sprocket system to eliminate bolt shearing. If you're running serious power or even mild track work, this is a must-have upgrade for reliability.

🔧 Features & Benefits:

🔥 Solid Steel Construction – No more weak aluminum—stronger, more durable, and designed to last.
🛠️ 8 Hybrid Bearings (Up from 4 Roller Bearings) – Improved strength, smoother operation, and better load handling.
⚙️ Larger Overall Diameter – Adds rigidity and durability for high-power builds.
🔩 Splined Secondary Sprocket Upgrade – Eliminates shearing issues with 12.9-grade bolts.
🏁 Race-Tested & Proven – Used in E-Xplorer and global race events, designed for real competition conditions.
🔄 Fully Serviceable & Rebuildable – EBMX stocks all replacement parts & bearings for long-term maintenance.

🔬 Maintenance Notes:

🛠️ Grease bearings every 6 months (or more frequently for extreme use).
🔩 Completely disassemblable & serviceable—built to last for years of hard riding.