---
product_id: 755080440
title: "Tongsheng OSF Electric Bike Conversion Kit TSDZ2B Torque Sensor Mid Drive Motor E Bike Conversion Kit 500W 750W with 860C Open Source Firmware Display for 68-73mm MTB Tricycle Road Bicycle"
brand: "tsdz2"
price: "€ 90.71"
currency: EUR
in_stock: false
reviews_count: 1
url: https://www.desertcart.it/products/755080440-tongsheng-osf-electric-bike-conversion-kit-tsdz2b-torque-sensor-mid
store_origin: IT
region: Italy
---

# Open source OSF 860C display Fits 68-73mm bottom bracket bikes 500W mid-drive motor power Tongsheng OSF Electric Bike Conversion Kit TSDZ2B Torque Sensor Mid Drive Motor E Bike Conversion Kit 500W 750W with 860C Open Source Firmware Display for 68-73mm MTB Tricycle Road Bicycle

**Brand:** tsdz2
**Price:** € 90.71
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Transform your ride, own the road with smart power!

## Quick Answers

- **What is this?** Tongsheng OSF Electric Bike Conversion Kit TSDZ2B Torque Sensor Mid Drive Motor E Bike Conversion Kit 500W 750W with 860C Open Source Firmware Display for 68-73mm MTB Tricycle Road Bicycle by tsdz2
- **How much does it cost?** € 90.71 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/755080440-tongsheng-osf-electric-bike-conversion-kit-tsdz2b-torque-sensor-mid)

## Best For

- tsdz2 enthusiasts

## Why This Product

- Trusted tsdz2 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Torque Sensor & Throttle:** Instant power delivery that responds to your pedal force or throttle for fatigue-free rides.
- • **Customizable Open Source Firmware:** Tailor your e-bike’s power and assist levels to your exact riding style.
- • **Universal Fit for Disc Brake Bikes:** Compatible with most 68-73mm bottom bracket bikes, perfect for MTB, road, and tricycles.
- • **Precision Mid-Drive Motor Placement:** 3.6kg motor centrally positioned for balanced weight and superior handling.
- • **Effortless Ride with Dual Clutch Tech:** Main gear disengages for smooth pedaling, feels just like a regular bike.

## Overview

The Tongsheng OSF Electric Bike Conversion Kit TSDZ2B features a powerful 500W mid-drive motor with advanced dual clutch design for smooth pedaling. It includes an open source OSF 860C display allowing full firmware customization, a smart torque sensor for responsive assist, and fits standard 68-73mm bottom bracket bikes with disc brakes. Weighing just 5.1kg, it balances power and lightweight design to upgrade your bike into a high-performance e-bike.

## Description

Full description not available

## Features

- New Version: TSDZ2 Updated to TSDZ2B Which has two clutches designed on the main gear. Main gear is disengaged from the chain during riding, so it feels as easy to ride as a bicycle. It increase the center positioning, which ensures the radial spacing accuracy. It also improves waterproof performance. After changing to a new integrated part, the life of the engine is increased
- Standard Universal: Fits most standard bike with 68-73mm bottom bracket, only fit for the bike with disc brake and chain drive system
- Open Source Fireware: Cyclists or developers can modify the firmware to better suit their specific needs or preferences. This could involve adjusting parameters like power output, throttle response, pedal assist levels, or even integrating additional features
- Torque Sensor & Throttle Function: The smart torque sensor can accurately detect the force on your foot and convert it into kinetic energy in time, with excellent starting performance. You can feel the power of starting the e-bike from your feet. It is to be the perfect combination of man and machine. If you get tired, meantime you also can use the throttle
- Mid Drive System: The weight of a bike is generally about 10-15kg, and the weight of the drive motor is about 2-4kg (include hub motor, mid motor). The weight of TSDZ2B is 3.6Kg which occupies 19-26% of the bike, and it is located in the center of the bike, which can make the weight of the e-bike more uniform; keep the original structure of your bike and available for many kinds of bikes

## Images

![Tongsheng OSF Electric Bike Conversion Kit TSDZ2B Torque Sensor Mid Drive Motor E Bike Conversion Kit 500W 750W with 860C Open Source Firmware Display for 68-73mm MTB Tricycle Road Bicycle - Image 1](https://m.media-amazon.com/images/I/61oLUwsyLNL.jpg)
![Tongsheng OSF Electric Bike Conversion Kit TSDZ2B Torque Sensor Mid Drive Motor E Bike Conversion Kit 500W 750W with 860C Open Source Firmware Display for 68-73mm MTB Tricycle Road Bicycle - Image 2](https://m.media-amazon.com/images/I/51GSUFezSlL.jpg)
![Tongsheng OSF Electric Bike Conversion Kit TSDZ2B Torque Sensor Mid Drive Motor E Bike Conversion Kit 500W 750W with 860C Open Source Firmware Display for 68-73mm MTB Tricycle Road Bicycle - Image 3](https://m.media-amazon.com/images/I/51wzzd2FoBL.jpg)
![Tongsheng OSF Electric Bike Conversion Kit TSDZ2B Torque Sensor Mid Drive Motor E Bike Conversion Kit 500W 750W with 860C Open Source Firmware Display for 68-73mm MTB Tricycle Road Bicycle - Image 4](https://m.media-amazon.com/images/I/61XTF3cD7FL.jpg)
![Tongsheng OSF Electric Bike Conversion Kit TSDZ2B Torque Sensor Mid Drive Motor E Bike Conversion Kit 500W 750W with 860C Open Source Firmware Display for 68-73mm MTB Tricycle Road Bicycle - Image 5](https://m.media-amazon.com/images/I/61NgLPJgqVL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exactly what I hoped
*by B***D on August 14, 2025*

Great Kit. The Open Source Firmware is amazing.

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**Shop now:** [https://www.desertcart.it/products/755080440-tongsheng-osf-electric-bike-conversion-kit-tsdz2b-torque-sensor-mid](https://www.desertcart.it/products/755080440-tongsheng-osf-electric-bike-conversion-kit-tsdz2b-torque-sensor-mid)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-26*