A 73kg Bike at 90km/h Deserves a Motorcycle Brake
The SRPNT X3 is a 73kg machine quoted at around 90km/h, and SRPNT stops it at the front with a 220mm fixed rotor inside a single own-brand assembly. This kit converts it to genuine Sur-Ron Ultra Bee hydraulics — caliper and master cylinder — running a 240 or 250mm floating rotor at 3.5mm on a steel-braided line.
- Up to 30% more stopping power — rotor, pads, line and caliper changed together
- Moves you onto a parts platform you can service — Ultra Bee pads, seals and levers are available everywhere
- Genuine Ultra Bee caliper + master cylinder — not a copy
- No fade on long descents — floating rotor, cooling grooves, semi-metallic pads
Stock SRPNT X3 Front Brake vs EBG Front Brake Kit V2
| Stock SRPNT X3 | EBG Front Brake Kit V2 | |
|---|---|---|
| Stopping power | Baseline | Up to 30% more |
| Rotor | 220 mm fixed | 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 (aramid) | Semi-metallic, genuine Surron |
| Line | Standard hydraulic hose | Steel-braided, PTFE core, DOT4 |
Diameter alone accounts for part of it — 220mm becomes 240 or 250mm — and the rest comes from rotor thickness, pad compound, line stiffness and the caliper.
Why Converting to Ultra Bee Hydraulics Is Worth It on an X3
The X3 front brake is sold as one SRPNT-branded unit, so a worn caliper or a leaking master cylinder means ordering from one supplier and waiting. Ultra Bee parts are the opposite: pads, seals, levers and rebuild kits are stocked by every shop that touches this class of bike. The performance is the reason to fit this kit; being able to keep it running is the reason it stays fitted.
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 SRPNT X3 kit we ship uses genuine Sur-Ron Ultra Bee parts.
Which SRPNT X3 Brake Option Do I Need?
Four ways to buy it:
- Brake Kit + Front Rotor Guard + Rotor — everything you need in one box, guard included.
- Brake Kit + Rotor — everything except the guard.
- Brake Kit Only — caliper, master cylinder, line, pads and bracket; bring your own rotor.
- Front Brake Bracket Only — bracket alone, M5 x 45mm, for riders sourcing the rest themselves.
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
In the box:
- 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
SRPNT X3 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 SRPNT X3 Models
- SRPNT X3
Bracket cut for the X3 fork. 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.




























Reviews
There are no reviews yet