The Light Bee Stops on 203mm of Bicycle-Sized Brake
The Light Bee left the factory with a 203mm fixed front rotor just 1.8mm thick — a bicycle rotor bolted to a 47kg motorcycle that will do 70km/h. The EBG Front Brake Kit V2 replaces it with a 240 or 250mm floating rotor at 3.5mm, a genuine Sur-Ron Ultra Bee caliper and master cylinder, and a steel-braided line.
- Up to 30% more stopping power — from a bigger, thicker, better-cooled rotor
- Nearly double the disc material — 3.5mm against the stock 1.8mm — far more heat to absorb before fade
- Genuine Ultra Bee caliper + master cylinder — not one of the copies flooding the market
- Firm lever on the third stop, not just the first — steel-braided line with a PTFE core
Stock Sur-Ron Light Bee Front Brake vs EBG Front Brake Kit V2
| Stock Sur-Ron Light Bee | EBG Front Brake Kit V2 | |
|---|---|---|
| Stopping power | Baseline | Up to 30% more |
| Rotor | 203 × 1.8 mm | 240 or 250 × 3.5 mm |
| Rotor type | Fixed, one-piece solid | Floating, bobbinless, with cooling grooves |
| Caliper | Factory OEM | Genuine Sur-Ron Ultra Bee |
| Master cylinder | Factory OEM | Genuine Sur-Ron Ultra Bee, right hand |
| Pads | Factory pads — glaze when hot | Semi-metallic, genuine Surron |
| Line | Standard rubber hose | Steel-braided, PTFE core, DOT4 |
Where the 30% comes from: 18–23% from rotor diameter alone, the rest from pad compound, line stiffness and the caliper.
Why the Rotor Thickness Matters More on a Light Bee
A brake turns speed into heat, and the rotor is what stores that heat. The stock 1.8mm disc runs out of material to soak it into on the second or third hard stop of a descent, which is when the lever goes long. At 3.5mm the V2 rotor holds nearly twice the mass, and the cooling grooves and floating carrier get rid of it between stops instead of passing it into the fluid.
Genuine Sur-Ron Ultra Bee Parts — Not Copies
The market is full of Ultra Bee caliper and master cylinder copies. They photograph the same and cost less, and the difference is in the piston bores and the seals — which you find out on a steep descent. Every Sur-Ron Light Bee kit we ship uses genuine Sur-Ron Ultra Bee parts.
Which Sur-Ron Light Bee Brake Option Do I Need?
Four ways to buy it, depending on what you already own:
- Brake Kit + Front Rotor Guard + Rotor — the whole thing, plus a guard over the rotor. Most riders pick this.
- Brake Kit + Rotor — the whole thing without the guard.
- Brake Kit Only — you are keeping a rotor you already own.
- Front Brake Bracket Only — just the radial mount bracket, M5 x 45mm.
Options that include a rotor let you choose the V2.1 or V3.0 rotor design. Both are 240 or 250mm at 3.5mm.
What’s in the Box
Every option ships with the parts below that apply to it:
- Genuine Sur-Ron Ultra Bee caliper
- Genuine Sur-Ron Ultra Bee right-hand master cylinder
- Genuine Surron semi-metallic pads
- Steel-braided brake line, PTFE core
- Radial mount bracket, M5 x 45mm
- Floating rotor 240 / 250mm — with the Rotor options
- Front rotor guard — with the Rotor Guard option
Sur-Ron Light Bee Front Brake Kit Specifications
- Rotor: 240 or 250mm × 3.5mm floating, bobbinless, cooling grooves
- Rotor material: 420J2 stainless, heat treated for hardness and resistance to deformation
- Caliper: genuine Sur-Ron Ultra Bee hydraulic
- Master cylinder: genuine Sur-Ron Ultra Bee, right hand
- Bracket: radial mount, M5 x 45mm
- Line: steel-braided, PTFE core
- Fluid: DOT4
- Shipping weight: 2.5 kg complete kit · 2.3 kg kit + rotor · 1.45 kg kit only · 0.1 kg bracket only
Fits These Sur-Ron Light Bee Models
- Light Bee X · Light Bee L1e · Light Bee S
One bracket covers every Light Bee. Some forks need 0.5–1.5mm shim washers. Bleed the line after fitting.
Not sure it fits your setup? Leave a note at checkout and we will confirm before we ship.



























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