This Ø 250 mm rear brake disc is an oversized rotor built for Sur-Ron Light Bee electric motorcycles. It fits both the Light Bee L1E and the Light Bee X. The kit ships with a caliper adapter and a full bolt set. Everything needed for the swap is included in the box.
The disc is made from steel that resists both heat and wear. Its larger diameter creates stronger braking torque at the rear wheel. As a result, stopping distances get shorter. The wider working surface also spreads heat across a bigger area. Therefore brake fade during long descents is reduced.
Mounting is a straightforward bolt-on job. The rotor attaches to the rear hub through the supplied adapter. No frame welding or hub machining is required. This makes it a practical upgrade for riders who push their Light Bee hard off-road or through city traffic.
Key Benefits
- Ø 250 mm diameter – generates more braking torque than a smaller-diameter rear rotor.
- Improved cooling – the larger working area reduces fade on long downhill runs.
- Caliper adapter included – lets you fit the disc without reworking the frame or hub.
- Bolt set in the box – no extra hardware needs to be ordered separately.
- Heat-resistant steel – the material handles high temperatures and resists wear.
- Precise geometry – smoother running, less vibration and quieter braking.
- OEM caliper compatibility – the adapter aligns the disc with the factory system.
- Steadier modulation – lever feel stays predictable during hard riding.
Who Is This For?
This rotor is made for Sur-Ron Light Bee electric motorcycles. Both the Light Bee L1E and the Light Bee X are covered. The mounting position is the rear wheel only.
Your caliper and hub can be original factory parts or compatible aftermarket components. The adapter comes in the kit, so both routes work. Riders who mix trail riding with city commuting will notice the difference first.
Long downhill sections load the rear brake more than anything else. That is exactly where a bigger disc pays off. The upgrade also suits owners who have already modified their bike. If your Light Bee now carries more speed, the braking system should keep up. Pair the rotor with good brake pads for the best result.
What’s in the Box?
- 1× rear brake disc, 250 mm
- 1× caliper adapter
- 1× bolt set
Technical Specifications
| Diameter | Ø 250 mm |
| Type | Rear brake disc with cooling holes |
| Material | Steel, resistant to heat and wear |
| Position | Rear wheel |
| Motorcycle | Sur-Ron Light Bee (L1E / X) |
| Caliper / hub | OEM or compatible aftermarket (adapter included) |
| Mounting | Bolted to the OEM hub via adapter |
| Kit contents | Disc, adapter, bolt set |
| Recommendation | Use with good-grade brake pads |
Installation Tips
- Clean the wheel hub mounting face before fitting the adapter.
- Apply medium-strength thread locker to the bolts.
- Torque everything to OEM specifications.
- Check that the caliper sits centred over the disc.
- Re-torque the bolts after the first 50-100 km.
- Bed the pads in so the surfaces mate properly.
Why Choose This 250 mm Rear Rotor?
The main difference is diameter. A Ø 250 mm disc works with more leverage than the standard rear rotor. Consequently, less lever force delivers the same braking torque. Your hand stays fresher over a long ride.
The second difference is the kit contents. The adapter and bolts are already included. Installation therefore stays quick and clean, with no follow-up orders. You can fit the disc in one session.
The third difference is thermal capacity. A larger steel surface sheds heat more effectively. This matters on extended descents, where the rear brake works almost continuously. Fade sets in later, so braking stays consistent.
Frequently Asked Questions
Does this disc fit the Sur-Ron Light Bee X?
- Yes. The rotor fits both Light Bee X and Light Bee L1E models.
- It mounts to the rear wheel in both cases.
Do I need any extra parts for installation?
- No. The kit includes the disc, the caliper adapter and the bolt set.
Will I have to modify the frame or hub on my Light Bee?
- No modifications are needed. The supplied adapter handles the fitment.
- It is a bolt-on installation onto the OEM hub.
Can I keep my original caliper?
- Yes. The adapter adapts the disc to the factory system.
- Compatible aftermarket calipers also work.
What material is the disc made from?
- Steel that resists high temperatures and wear.
- Cooling holes help move heat away from the surface.
Does a bigger disc really shorten stopping distance?
- Yes. The larger diameter generates stronger braking torque.
- That translates into a shorter stopping distance.
Which brake pads should I use?
- Good-grade pads are recommended for the best results.
- Bed them in after installation so the surfaces mate.
Is this rotor suitable for a modified bike?
- Yes. It suits riders who have raised their bike’s speed.
- Braking capacity then matches the extra pace.
A Ø 250 mm rear disc is one of the most direct upgrades available for the Sur-Ron Light Bee L1E and Light Bee X. It combines stronger braking torque, better heat handling and a bolt-on fit. With the adapter and bolts supplied, the job takes one afternoon in the garage.
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