SRPNT X3 Rear Brake Kit V1 – Ultra Bee Caliper | EBG
$ 89.00 – $ 339.00Price range: $ 89.00 through $ 339.00
Complete rear brake upgrade for the SRPNT X3: genuine Sur-Ron Ultra Bee caliper and master cylinder, 220 or 230 mm floating rotor (3.5 mm) and a one-piece CNC bracket with integrated rotor guard in seven anodised colours. Up to 30% more stopping power than the stock 220 mm rear brake — bolts to the factory mounts, no fabrication. V1 is the original EBG design at a lower price; V2 adds the 7075 bracket with carbon accents.
Built for how the X3 actually gets ridden — hard on the rear, all day. Complete rear circuit, no fabrication — the original EBG rear kit, now at a lower price.
Stock SRPNT X3 rear brake vs EBG Rear Brake Kit V1
| Aspect | Stock SRPNT X3 | EBG Rear Brake Kit V1 |
|---|---|---|
| Stopping power | Baseline | Up to 30% more |
| Caliper & master cylinder | Stock 4-piston, DOT 4 | Genuine Sur-Ron Ultra Bee, DOT4 |
| Rotor | 220 × 3 mm fixed | 220 / 230 × 3.5 mm floating |
| Rotor features | Solid one-piece | Bobbinless floating, cooling grooves, 420J2 heat-treated |
| Line | Standard rubber | Steel-braided, PTFE core |
| Bracket | Cast / stamped | One-piece CNC billet with integrated rotor guard, anodised, 7 colours |
More steel in the disc means more heat absorbed before the lever goes long — that is where fade comes from, not lever effort.
V1 or V2?
Same genuine Ultra Bee caliper, master cylinder, pads, line and rotor in both. V1 uses the original one-piece bracket with the rotor guard machined in, in seven colours. V2 moves to a 7075 bracket with carbon-fibre accents and a separate rear rotor guard. If you want the stopping power without the extras, V1 is the value pick.
Key specs
| Rotor | 220 or 230 mm floating · 3.5 mm · cooling grooves · 420J2 stainless, heat treated |
| Rotor design | Choose V2.1 or V3.0 (same size and material — V3.0 is the newer spoke pattern) |
| Caliper | Genuine Sur-Ron Ultra Bee 2-piston — not a copy |
| Master cylinder | Genuine Sur-Ron Ultra Bee |
| Pads | Semi-metallic, genuine Sur-Ron |
| Line | Steel-braided, PTFE core, DOT4 |
| Bracket | One-piece CNC billet with integrated rotor guard · M6x68mm · anodised black, blue, grey, dark brown, galaxy purple, raw silver, red |
Which option?
Pick the option that matches what you already own:
- Brake Kit + Rotor V3.0 — everything in one box, newest rotor design. Our most-ordered option. ($339)
- Brake Kit + Rotor V2.1 — everything in one box, V2.1 rotor design. ($339)
- Brake Kit (No Rotor) — caliper, master cylinder, pads, braided line and bracket — keep your own 220 / 230 mm rotor. ($244)
- Brake Bracket Only — just the one-piece CNC bracket with guard, anodised in your colour. ($89)
Move your mouse over a colour above and the photo switches to that finish.
Fits
SRPNT X3 (Throne Cycles) — M6x68mm. Uses the factory mounting points — no drilling, no adapters. Some frames need 0.5–1.5 mm shim washers behind the caliper for dead-centre alignment; they are cheap and easy to fit.
Why riders swap it
Fade is heat, not effort. A 3.5 mm floating disc holds far more heat than the stock 220 mm rotor before the lever goes long, and the floating carrier lets it expand without warping. The genuine Ultra Bee caliper and master cylinder give a firm, consistent lever — the same parts Sur-Ron fits to its own bikes, not the copies flooding the market.
Installation guide: watch the full setup video. Bleed the system after fitting.
Keep pads and rotor free from chain lube and brake fluid — contamination causes noise and is not covered by warranty.
Unsure which one you need? Leave a note at checkout and we will check it before shipping.
| Weight | 2.4 kg |
|---|---|
| color | Black, Blue, Grey, Dark Brown, Galaxy Purple, Raw Silver, Red |
| Model | X3 |
| Brake Option | Brake Bracket Only, Brake Kit (No Rotor), Brake Kit + Rotor V2.1 (M6x68mm), Brake Kit + Rotor V3.0 (M6x68mm) |
| size | 220mm, 230mm |
Shipping Policy
Processing Time
Within 1-2 business days after an order is placed, the item will be handed over to the carrier, and the shipping label will be created. Once your package has been picked up by the carrier, you can track its delivery using the following link: https://www.17track.net/en. Please note that orders will not be processed on weekends or public holidays.
Delivery Time
Our goal is to process and ship your orders efficiently. All products are shipped from Vietnam. Depending on the destination and transportation method, delivery times are as follows:
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United States, Canada, Europe (Standard Shipping): 3-5 business days.
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Other Regions (Standard Shipping): 7-10 business days.
Delivery times may vary due to factors beyond our control, such as customs delays or force majeure.
Order Tracking
An email with tracking details will be sent once your item is dispatched. This will allow you to follow your package’s journey. If you do not receive this email or need additional shipping information, please contact us at ebgvietnam@gmail.com.
Contact Information
For any inquiries, please reach out to us at:
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Address: 225 Nguyen Tieu La Street, Ward 8, District 10, Ho Chi Minh City, VietNam.
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Mobile: +84979681368 (WhatsApp, Telegram)
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Email: ebgvietnam@gmail.com
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Website: https://ebikegarage.shop/
Note
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Pre-order and customized products are excluded from the standard processing and delivery times. The expected delivery date will be stated in the product description or confirmed during order placement.
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Ebike Garage is not responsible for any damage, loss, or theft of goods caused by third-party carriers after the package has been dispatched.
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We are unable to ship to P.O. boxes, APO/FPO addresses, or locations in Puerto Rico and Alaska.
Shipping Policy for Bulk Orders (Dealership)
For bulk orders, we recommend the following:
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Use your own preferred logistics provider to ensure safe delivery.
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Alternatively, you may pick up the goods from our warehouse in Vietnam.
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If neither option is available, we will arrange shipment with a third-party carrier. However, Ebike Garage will not be liable for any damage, loss, or theft caused by third-party carriers once the goods leave our warehouse.
Third-Party Shipping Processing Time
Spot goods will be handed to the carrier within 1-2 business days of order placement. The carrier will process packages within 2 business days of pick-up. Tracking information will be available through: https://www.17track.net/en.
Delivery Areas and Estimated Shipping Time
| Shipping Method | Region | Estimated Delivery Time (Business Days) |
|---|---|---|
| Standard Shipping (UPS, FedEx, DHL) | United States, Canada, France, Germany, UK, Italy, Australia, New Zealand, etc. | 3-5 |
| Brazil, Chile, Russia, South Africa | 7-10 | |
| UAE, Kuwait, Saudi Arabia, Lebanon | 7-10 | |
| All Other Countries | 7-10 |
Address Accuracy
Please ensure that your shipping address is accurate when placing an order. Incorrect addresses may delay or prevent delivery.
Shipping Costs
We offer door-to-door delivery services using local carriers such as UPS, FedEx, or DHL. Shipping costs will be calculated at checkout based on your location and the size of your order.
30-Day Limited Warranty
Eligible EBG-branded products are covered against confirmed manufacturing defects for 30 calendar days from the carrier-recorded delivery date. Product-specific coverage takes precedence.
What riders say about our brake kits
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