Buy Light Bee 19 Rear Wheel Assembly with Brake Disc Sprocket & Tire

Buy Light Bee 19 Rear Wheel Assembly with Brake Disc Sprocket & Tire.   One of the most important components of the Surron Light Bee is its rear wheel assembly—especially when upgraded to a 19” setup. This version typically comes fully mounted with a brake disc (rotor), rear sprocket, and off-road tire, offering significant performance benefits in torque handling, ground clearance, and trail performance.

This comprehensive guide examines the Surron Light Bee 19″ Rear Wheel Assembly with Brake Disc, Sprocket, and Tire, detailing each component, material choices, design philosophy, compatibility, pros and cons, and upgrade potential.

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2. Components Overview

A typical Surron Light Bee 19″ Rear Wheel Assembly includes:

1. 19” Aluminum Rim

2. Spokes and Hub (Rear Hub)

3. Brake Disc (Rotor)

4. Rear Sprocket (often 48T or 54T)

5. Tire (Off-Road or Hybrid)

6. Tube or Tubeless Setup

7. Bearings, Seals, and Axle Spacers

Each of these components plays a vital role in ensuring the bike’s traction, control, power delivery, and braking performance.

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3. 19″ Rim and Hub: Materials & Engineering

A. Rim Construction

• Material: 6061 or 7075-T6 aluminum alloy

• Size: 19 inches (motorcycle standard, typically 1.60” or 1.85” wide)

• Finish: Anodized black or silver (black is most common to match the Surron aesthetic)

• Lacing: Stainless steel spokes with aluminum nipples

Benefits

• The larger 19” diameter allows for better roll-over ability, especially on trails, rocks, and ruts.

• Lightweight yet strong, these rims are designed for high-impact durability.

• A wider rim allows for better tire profile, giving enhanced traction and cushioning.

Rear Hub Design

• CNC-machined aluminum hub

• Pre-installed sealed bearings

• Black anodized or silver finish

• Bolt pattern compatibility:

  • 6-bolt disc brake

  • 4-bolt rear sprocket (Surron-specific)

The rear hub is engineered to manage high torque output from the electric motor, making it resistant to warping and deformation even under hard riding conditions.

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4. Brake Disc (Rotor)

Specification

• Size: 220mm or 203mm (depends on the kit or rider’s upgrade preference)

• Material: Stainless steel (heat-treated)

• Mount: 6-bolt IS mount standard

Performance Features

• Large diameter rotors improve braking torque and heat dissipation.

• Wave or drilled design reduces weight and helps with cooling during repeated stops.

• Compatible with stock Surron hydraulic brakes or upgraded systems like Magura MT7, TRP, or Hayes Dominion.

Maintenance Notes

• Ensure proper alignment with brake caliper to avoid rotor rub.

• Use torque-specific tightening patterns to avoid rotor warping.

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5. Rear Sprocket

Material

• High-grade aluminum or hardened steel (aftermarket)

• Common tooth counts: 48T, 54T, 58T, or even 64T for torque-focused builds

Mounting

• 4-bolt standard pattern (Surron specific)

• Precision CNC cut to minimize chain wear and ensure accurate engagement

Gear Ratio Implications

• Higher tooth count = more torque, less top speed

• Lower tooth count = higher speed, less torque

This makes the sprocket a critical part of tuning the Light Bee for different environments: trails, stunts, hill climbs, or flat racing.

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6. Tire and Tube

Tire Type

• 19” motorcycle tire (commonly 70/100-19 or 80/100-19)

• Knobby tread for off-road performance

• Brands often include Kenda, CST, Michelin Starcross, or Dunlop Geomax

Tube vs Tubeless

• Most Surron setups run a heavy-duty inner tube

• Some upgraded builds may go tubeless with a Tubliss system or tubeless-compatible rim

Air Pressure

• Off-road: 12–18 psi

• Street or dual-sport: 20–25 psi

Benefits of 19” over 18”

• Faster roll speed

• Better angle of attack over obstacles

• Greater tire availability compared to 18″ e-bike-specific rims

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7. Compatibility and Fitment

The Surron Light Bee 19” Rear Wheel Assembly is directly compatible with:

• Surron Light Bee X

• Surron Light Bee L1e (road-legal)

• Talaria Sting (with minor axle/spacer adjustments)

Note: Wheel assembly is plug-and-play when purchased pre-assembled with rotor and sprocket. All hardware should be torqued to spec.

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8. Installation Overview

Tools Needed

• 17mm or 19mm axle wrench

• Allen keys (for disc and sprocket)

• Torque wrench

• Chain tool (if chain length needs to be adjusted)

Steps

1. Lift bike on stand

2. Remove axle and old wheel

3. Transfer axle spacers if not included in new assembly

4. Slide new wheel into swingarm, aligning chain and caliper

5. Torque axle to spec (typically 65–70Nm)

6. Check chain tension and alignment

7. Test ride and recheck bolts after first ride

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9. Performance and Riding Experience

Upgrading to a 19” rear wheel with a high-quality disc and sprocket enhances:

• Acceleration: Depending on sprocket size, you get sharper low-end pull

• Braking: Larger rotor with better leverage and heat control

• Grip: Bigger tire patch means better control in dirt, sand, or mud

• Rider Comfort: More cushion from larger tires and better shock absorption

This upgrade is ideal for trail riders, enduro racers, urban stunt riders, and anyone pushing their Surron beyond stock limits.

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10. Common Upgrades That Pair Well

• 19” front wheel for balanced handling

• Upgraded brake calipers (TRP, Hope, Hayes)

• Reinforced rear swingarm for heavier tires and higher torque

• Morse chain or O-ring chain for durability

• Aftermarket suspension to match terrain performance

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11. Pros and Cons

✅ Pros:

• Improved off-road performance

• Larger contact patch for grip

• Durable construction for stunts and jumps

• More torque control with sprocket tuning

• Enhanced braking response

❌ Cons:

• Slightly heavier than 16” or 18” setups

• Slight loss in top speed with larger sprocket

• Requires a longer chain in some configurations

• May rub on chain guard or swingarm if misaligned

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12. Maintenance and Longevity

Recommended Checks:

• Tire pressure: before every ride

• Spoke tension: weekly

• Chain alignment and tension: every 2–3 rides

• Rotor wear and bolt torque: monthly

• Sprocket teeth: inspect for hooking or wear

Replacement Intervals

• Tire: 800–1500 km (off-road use)

• Brake rotor: 3000–5000 km

• Sprocket: 2000–3000 km (depends on chain maintenance)

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13. Cost Breakdown (USD Pricing Estimate)

Prices vary based on brand, material (steel vs aluminum), and whether the product is OEM or aftermarket.

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14. Where to Buy

Reliable sources for the 19″ rear wheel assembly include:

• Amazon / eBay (caution: check compatibility)

• AliExpress (longer shipping, more options)

• Sur-Ron official dealers Like Our Shop

• Local moto/e-bike shops

Make sure to verify the bolt pattern, rim width, and hub fitment before purchasing.

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15. Conclusion

The 19” Rear Wheel Assembly with Brake Disc, Sprocket, and Tire is more than a visual or minor upgrade—it significantly transforms the way your Surron Light Bee performs under real-world off-road and hybrid terrain conditions. It improves traction, power delivery, braking, and overall bike durability when pushed hard.

Whether you’re into trail riding, enduro-style racing, urban stunting, or simply want a beefier setup that can handle more abuse, upgrading to this full rear wheel kit is a smart, long-term investment.

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