Ultra Bee Rear Brake Conversion Kit for Sur-Ron Light Bee X/L1e, black

Rear brake conversion kit – Ultra Bee system for Sur-Ron Light Bee X / L1e in black. Significant braking performance upgrade over the stock Light Bee setup. Complete kit with all mounting hardware — direct bolt-on installation.

USD188.90

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SUR-RON LIGHT BEE

Ultra Bee → Light Bee rear brake conversion (black)

CNC 7075 adapter, disc guard and 240 mm disc. The mechanical half of the conversion.

The kit that lets you fit the Sur-Ron Ultra Bee rear brake system to a Light Bee X or Light Bee L1e. It contains a CNC adapter in aerospace 7075 aluminium, a CNC 7075 disc guard and a 240 mm disc, 3.3 mm thick, to Ultra Bee spec.

Stated up front, because this is where most orders go wrong: this is the mechanical half of the conversion — mounting and disc. The hydraulics — master cylinder, caliper with pads and line — are in the complete Ultra Bee rear brake assembly. Unless you already have a stripped Ultra Bee system on the bench, you need both items.

What to order

What you have	What you order	Why
Light Bee X / L1e, you want a stronger rear brake	This kit + complete Ultra Bee rear brake	The kit gives you the mounting and the 240 mm disc. Master cylinder, caliper and line come with the brake assembly.
You already removed a rear system from an Ultra Bee	This kit alone	What you are missing is exactly the adapter, guard and disc for Light Bee geometry.
You only want a thicker disc for the stock brake	A separate 220 mm disc	The 240 mm disc here needs this adapter and an Ultra Bee caliper. It will not work with the stock caliper.

The most common mistake: ordering the conversion kit alone expecting a working brake. This is not a brake — it is mounting, guard and disc. The hydraulics are linked in the tile below.

What you get

CNC 7075 adapter

Aerospace aluminium. Carries the Ultra Bee caliper on a Light Bee swingarm.

CNC 7075 disc guard

Protects the disc from rocks and branches.

240 mm disc

3.3 mm thick, Ultra Bee specification.

black finish

The same build is available in the other colour — linked below.

What is not included

Master cylinder, caliper, pads or brake line. This kit is the mechanical part of the conversion. The hydraulics are in the complete Ultra Bee rear brake — linked below.

Specification

Application	Sur-Ron Light Bee X, Light Bee L1e
Function	Rear brake conversion to the Ultra Bee system
Adapter	CNC, 7075 aluminium
Disc guard	CNC, 7075 aluminium
Disc diameter	240 mm
Disc thickness	3.3 mm
Colour	black
Also required	Complete Ultra Bee rear brake, unless you already have one stripped

The manufacturer does not publish torque values and we do not guess them. Follow your swingarm manual on assembly, or message us and we will advise.

7075 aluminium240 mm / 3.3 mm discLight Bee X and L1eblack finish

Before you order

Check whether you already have Ultra Bee hydraulics. If not, add the complete rear brake.
The kit is for Light Bee X and L1e. We do not carry fitment to other models.
The same kit exists in the other colour — check the link below if you are matching a build.
Doing the front as well? The front conversion is a separate item.

Frequently asked questions

Is this a complete brake?

No. It is adapter, guard and disc — the mechanical part of the conversion. Master cylinder, caliper and line are in the complete Ultra Bee rear brake.

What does a full rear conversion cost?

This kit plus the complete Ultra Bee rear brake. Both are in the shop; the brake is in the tile below.

Will the 240 mm disc work with the stock Light Bee caliper?

No. The larger disc needs this adapter and an Ultra Bee caliper.

What is the difference between black and gold?

Only the colour of the CNC parts. Construction, material and dimensions are identical.

Does it fit a Talaria or an Ultra Bee?

No. The kit is for Light Bee X and L1e. Ask before ordering for anything else.

Without this the conversion does not work

Ultra Bee rear brake

Master cylinder, caliper with pads and line. Without it the conversion kit has nothing to brake with.

gold version

The same build in the other CNC colour.

Ultra Bee to Light Bee front brake conversion kit

Front conversion

The same job on the front axle. Worth doing first.

Not sure whether you also need the brake assembly?

Tell us what you already have stripped down. We will say exactly what is missing for a working system.

Do you need help? Do you have any questions?Ask a question and we'll respond promptly, publishing the most interesting questions and answers for others.

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