EBG 520 rear sprocket for Surron Ultra Bee
Upgrade the final drive of your Surron Ultra Bee with a rear sprocket designed for aggressive trail, enduro and high-load riding. The hybrid construction combines a lightweight 7075-T6 aluminum core with a hardened-steel tooth ring, reducing unnecessary rotating mass while keeping the chain-contact surface durable.
Why choose aluminum and hardened steel?
- Low rotating mass: The CNC-machined aluminum core keeps the assembly lighter than a full-steel sprocket.
- Durable tooth surface: Hardened-steel teeth resist wear where the 520 chain contacts the sprocket.
- Stable chain engagement: Precision-machined tooth geometry supports smooth and consistent power transfer.
- Off-road construction: The riveted two-piece structure is designed for repeated acceleration, braking and terrain impacts.
- Corrosion protection: The hard-anodized aluminum core helps protect the finish in wet and muddy conditions.
Choose your tooth count
| Option | Recommended use | Riding effect |
|---|---|---|
| 52T | Mixed street and trail riding | Balanced acceleration and cruising speed |
| 54T | General off-road and enduro use | Stronger low-speed pull with a moderate top-speed trade-off |
| 56T | Technical trails, hills and heavier wheel setups | More wheel torque and quicker response at lower speed |
| 58T | Steep climbs and low-speed technical terrain | Maximum low-speed control with the greatest reduction in top speed |
Gearing note: Increasing rear tooth count improves acceleration and climbing response but reduces top speed. Chain length may need adjustment when changing sprocket size. Verify chain length, alignment and clearance before installation.
Specifications and fitment
| Bike fitment | Surron Ultra Bee |
|---|---|
| Chain compatibility | 520 chain |
| Tooth-count options | 52T, 54T, 56T and 58T |
| Core material | CNC-machined 7075-T6 aluminum, hard-anodized |
| Tooth-ring material | Hardened wear-resistant steel |
| Construction | Riveted dual-material assembly |
| Installation | Direct replacement; verify chain length for the selected gearing |
Compatibility: Designed specifically for the Surron Ultra Bee. It is not a Light Bee, Talaria or universal 420-chain sprocket.
Package contents
- One EBG Surron Ultra Bee 520 rear sprocket in the selected tooth count
Installation and maintenance
- Inspect the chain, front sprocket, chain guide and mounting hardware before installation.
- Confirm chain length and wheel clearance for the selected tooth count.
- Align the rear wheel and sprocket carefully, then set chain slack to the vehicle specification.
- Tighten mounting hardware to the Surron service specification and recheck it after the first ride.
- Clean and lubricate the 520 chain regularly. Inspect chain tension, tooth wear and rivets after muddy or high-load rides.
Professional installation is recommended if the bike uses modified wheels, suspension, motor or drivetrain components.
| Teeth Count | 52T, 54T, 56T, 58T |
|---|
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