---
product_id: 271554487
title: "RUJOI Bike Disc Brake Kit, Aluminum Front and Rear Caliper, Full Aluminum Alloy Bicycle Brake Lever, 140mm Rotor, Mechanic Tool-Free Pad Adjuster for Road Bike, Mountain Bike"
brand: "rujoi"
price: "¥10749"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/271554487-rujoi-bike-disc-brake-kit-aluminum-front-and-rear-caliper
store_origin: JP
region: Japan
---

# 140mm stainless steel rotors Full aluminum alloy lever & calipers Tool-free pad adjuster RUJOI Bike Disc Brake Kit, Aluminum Front and Rear Caliper, Full Aluminum Alloy Bicycle Brake Lever, 140mm Rotor, Mechanic Tool-Free Pad Adjuster for Road Bike, Mountain Bike

**Brand:** rujoi
**Price:** ¥10749
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Stop on a dime, ride like you own the road!

## Quick Answers

- **What is this?** RUJOI Bike Disc Brake Kit, Aluminum Front and Rear Caliper, Full Aluminum Alloy Bicycle Brake Lever, 140mm Rotor, Mechanic Tool-Free Pad Adjuster for Road Bike, Mountain Bike by rujoi
- **How much does it cost?** ¥10749 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/271554487-rujoi-bike-disc-brake-kit-aluminum-front-and-rear-caliper)

## Best For

- rujoi enthusiasts

## Why This Product

- Trusted rujoi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready-to-Install Kit:** Complete system with front & rear calipers, rotors, bolts, and cables—everything you need in one box.
- • **Effortless Maintenance:** Tool-free pad adjuster lets you fine-tune braking performance on the fly—no mechanic needed.
- • **Lightweight Durability:** Full aluminum alloy calipers and levers keep your bike agile without compromising strength.
- • **Universal Compatibility:** Works seamlessly with a wide range of brake pads including Deore, Tektro, TRP, and more.
- • **Precision Stopping Power:** Smooth, reliable braking with 140mm rotors designed for light MTB, road bikes, and e-scooters.

## Overview

The RUJOI Bike Disc Brake Kit offers a complete, lightweight braking solution featuring full aluminum alloy calipers and levers, paired with durable 140mm stainless steel rotors. Designed for road bikes, light mountain bikes, and e-scooters, it ensures smooth, precise stopping power. Its tool-free pad adjuster and broad brake pad compatibility make maintenance effortless, while the all-in-one kit includes everything needed for quick installation.

## Description

Full description not available

## Features

- ▲Complete Solution: a whole brake system with 2 aluminum front and back caliper(51mm), 2 of aluminum bicycle brake handle, 2 of stainless steel 140mm Rotors, 2 sets of 6 bolts, & cable.
- ▲Dimension: IMD international dimension, Front Caliper and adopter Fit for 180mm rotor, rear caliper for 140mm disc. Bike brake levers fit installed on 22mm/0.87inch diameter handlebar
- ▲140mm Rotor Characteristic :Fit for Light MTB ,Road Bike or E-scooter .It offer smooth braking power and lighter than these big rotor so that yu would run your speed wihout heavt loading
- ▲Universal Brake Pad compatible : Compliant model Deore M515/M525/M475, Nexave C601,M375/M395/M415/M446/M465/M475/M485/M486.Tektro Auriga, Auriga E-Comp, Auriga Pro, Draco,Draco2, Draco WS, Gemini, HD330, Orion. TRP HY/RD, Hylex, Spyre, Spyre SLC

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RUJOI |
| Brand | RUJOI |
| Model | Rd02b-140 |
| Item Weight | 2.2 pounds |
| Package Dimensions | 6.77 x 6.69 x 2.68 inches |
| Item model number | RD02B-140 |
| Manufacturer Part Number | RD02B-140 |

## Product Details

- **Brand:** RUJOI
- **Vehicle Service Type:** Bicycle
- **Manufacturer:** RUJOI

## Images

![RUJOI Bike Disc Brake Kit, Aluminum Front and Rear Caliper, Full Aluminum Alloy Bicycle Brake Lever, 140mm Rotor, Mechanic Tool-Free Pad Adjuster for Road Bike, Mountain Bike - Image 1](https://m.media-amazon.com/images/I/71GDbe4EXkL.jpg)
![RUJOI Bike Disc Brake Kit, Aluminum Front and Rear Caliper, Full Aluminum Alloy Bicycle Brake Lever, 140mm Rotor, Mechanic Tool-Free Pad Adjuster for Road Bike, Mountain Bike - Image 2](https://m.media-amazon.com/images/I/71-eiTCGySL.jpg)
![RUJOI Bike Disc Brake Kit, Aluminum Front and Rear Caliper, Full Aluminum Alloy Bicycle Brake Lever, 140mm Rotor, Mechanic Tool-Free Pad Adjuster for Road Bike, Mountain Bike - Image 3](https://m.media-amazon.com/images/I/71qg3u5BOKL.jpg)
![RUJOI Bike Disc Brake Kit, Aluminum Front and Rear Caliper, Full Aluminum Alloy Bicycle Brake Lever, 140mm Rotor, Mechanic Tool-Free Pad Adjuster for Road Bike, Mountain Bike - Image 4](https://m.media-amazon.com/images/I/71VSAxerKhL.jpg)
![RUJOI Bike Disc Brake Kit, Aluminum Front and Rear Caliper, Full Aluminum Alloy Bicycle Brake Lever, 140mm Rotor, Mechanic Tool-Free Pad Adjuster for Road Bike, Mountain Bike - Image 5](https://m.media-amazon.com/images/I/71nCHWNOypL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What size rotors are included, and are they compatible with my bike?**
A: Answer:This mechanical disc brake set comes with [specify rotor size],which are compatible with most standard mountain bikes,road bikes and hybrid bikes.Please check your bike's specifications for rotor size compatibility before purchasing.

**Q: Does this set include all the necessary hardware for installation?**
A: Answer: Yes, the set includes all required hardware: calipers, rotors, mounting bolts, and adapters for post-mount or IS setups. Installation instructions are also provided for your convenience.

**Q: Can these brakes replace my existing V-brakes?**
A: Answer: Yes, this set is a great upgrade from V-brakes. However, your bike must have disc brake mounting points on the frame and fork. If you're unsure, consult your bike’s user manual or contact  for guidance.

**Q: Are the brake pads pre-installed, and how long do they typically last?**
A: Answer: Yes, the brake pads are pre-installed for easy setup. Pad longevity depends on riding conditions, but they typically last between 500-1000 miles under normal use.

**Q: What tools are needed for installation, and is it beginner-friendly?**
A: Answer:You'll need basic tools such as a hex wrench, screwdriver etc for installation.The setup is beginner-friendly with detailed instructions,but we recommend professional assistance for optimal performance if you're unfamiliar with installation.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy bolt on. Worked great on Razor MX650
*by C***N on May 2, 2023*

The previous hydraulic brakes I had installed blew out their seals so i wanted to swap out for another brand. Value for money is excellent with beefy, robust calipers that look and feel solid and bite much harder than the previous set of hydraulic brakes.Clean install, hardware feels nice in hand and metals don’t feel “overly light/cheap”. Feels like I can trust these to stop. Excellent grab, can actually hold the bike in place for a burnout til the front tire’s grip is overwhelmed.

### ⭐⭐⭐⭐ Good Brake Set, Decent Build Quality, Need to Replace Undersized OEM Brake Pads
*by A***R on February 9, 2021*

I wanted to upgrade my 22 year old Jamis mountain bike with a suspension fork and decided to add disc brakes while I was at it. I found a good deal on a Rockshox Judy Silver fork and purchased this brake set, in the 180mm size, to go with it, along with all the parts needed to convert from a threaded to a threadless headset. Everything went smoothly and installed without hassle, until I tried to fine tune the alignment of the brakes.When bedding-in the brakes I noticed that the brake pads only covered a portion of the disc, leaving what I would guess is about 20% of the braking surface of the disc exposed. I ground approximately 4mm of the 180mm disc post mount to post mount adapter/bracket (bought separately) off to try to align the pads over the disc better. This did help, but it needs to be lowered more than grinding the adapter will allow. When doing this mod, I also noticed the brake pad did not fully cover the caliper piston and wondered if the pads may be too small.I ordered and just received two new sets of pads, one Shimano and one Tektro. I measured the size of the pads with a micrometer and while the OEM pads are somewhat smaller, 2mm shorter and 1.5mm narrower, the biggest problem was the mounting stem/finger that secures the pads in place is too short, by about 3mm. This is probably the main reason the pad does not fully cover the disc. Also, the OEM pads are more curved, whereas the Shimano, and more so the Tektro pads are more rectangular, resulting in a larger surface area.Overall, the brakes are well built and solid. The installation went smoothly until I noticed the brake pad problem. I have ridden about 15-20 miles so far and they work about the same as the 22 year old V-brakes I had before. Don't take that statement the wrong way, the V-brakes worked exceptionally well, so that is actually a compliment to these disc brakes.Update:Just installed the Tektro pads and there is an immediate improvement in braking performance, which should improve even more as they continue to bed-in. The new pads also cover almost the entire braking area of the discs which is probably the biggest reason for the improvement. I did have to insert a washer between the mounting surfaces of the post mount bracket in order to raise them after grinding too much off. I am thinking these are better than my old V-brakes now. The new pads only cost $13, which would make the total cost of the fully functional 180mm disc brakes $50. Not bad compared to hydraulics, and at least its now an improvement over the old V-brakes.

### ⭐⭐⭐⭐⭐ Great price!
*by P***. on October 1, 2023*

First let me say that I bought this kit to replace brakes on a bike my son screwed up so this was not a fresh installation, I have no idea what that entails or how easy or difficult it is. But for a replacement it worked great! Very self-explanatory and easy to adjust. The price is amazing!

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-30*