---
product_id: 518366455
title: "125cc Dirt Bike Sprockets 420 17T Rear Sprocket and 37T Front Sprocket Kit 45 Steel Chain and Sprocket Kit for 50cc 70cc 90cc 110cc 125cc Dirt Pit Bike and Mini Bikes ATVs Go Kart"
brand: "psytfei"
price: "520.84 DT"
currency: TND
in_stock: true
url: https://www.desertcart.tn/products/518366455-125cc-dirt-bike-sprockets-420-17t-rear-sprocket-and-37t
store_origin: TN
region: Tunisia
---

# Complete 420 chain & sprocket kit Heat-treated steel for max durability Upgraded gear curve reduces friction 125cc Dirt Bike Sprockets 420 17T Rear Sprocket and 37T Front Sprocket Kit 45 Steel Chain and Sprocket Kit for 50cc 70cc 90cc 110cc 125cc Dirt Pit Bike and Mini Bikes ATVs Go Kart

**Brand:** psytfei
**Price:** 520.84 DT
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your ride with unstoppable power and precision!

## Quick Answers

- **What is this?** 125cc Dirt Bike Sprockets 420 17T Rear Sprocket and 37T Front Sprocket Kit 45 Steel Chain and Sprocket Kit for 50cc 70cc 90cc 110cc 125cc Dirt Pit Bike and Mini Bikes ATVs Go Kart by psytfei
- **How much does it cost?** 520.84 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/518366455-125cc-dirt-bike-sprockets-420-17t-rear-sprocket-and-37t)

## Best For

- psytfei enthusiasts

## Why This Product

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

## Key Features

- • **All-in-One Kit:** Includes 17T rear and 37T front sprockets plus mounting screws for easy installation.
- • **Unmatched Durability:** Heat-treated 45 steel sprockets resist wear and tear for longer rides.
- • **Precision Engineering:** 0.235in thick sprockets with 1.18in mounting holes fit 17mm engine countershafts.
- • **Smooth Power Transfer:** Advanced gear curve design minimizes transmission friction, extending chain life.
- • **Perfect Fit, Every Time:** Compatible with 50cc-125cc dirt bikes, ATVs, and go-karts using 420 chains.

## Overview

This 125cc Dirt Bike Sprockets Kit by Psytfei features heat-treated 45 steel sprockets with an upgraded gear curve to reduce friction and extend chain life. Designed for 420 chain sizes, it includes a 17T rear sprocket, 37T front sprocket, and mounting screws, fitting 50cc to 125cc dirt bikes, mini bikes, ATVs, and go-karts with 17mm engine countershafts.

## Description

125cc Dirt Bike Sprockets 420 17T Rear Sprocket and 37T Front Sprocket Kit 45 Steel Chain and Sprocket Kit for 50cc 70cc 90cc 110cc 125cc Dirt Pit Bike and Mini Bikes ATVs Go Kart

## Features

- STABLE PERFORMANCE:To make the sprocket stronger, the sprockets are heat treated, which increases the strength of the sprocket, making it resistant to wear and tear very well.
- BETTER DESIGN: The sprockets also have an upgraded gear curve that helps reduce transmission friction, which helps extend the life of the chain.
- IDEAL REPLACEMENT: This kit is designed to replace the old one in different power sport vehicles using 420 chain sizes. The front sprocket is supplied with mounting screws.
- COMPATIBILITY: This sprocket drive gear is 0.235in thick and has 17T. Center mounting holes are 1.18in apart and are compatible with 17mm engine countershafts.
- WIDE APPLICATION: The 420 chain front rear sprocket kit is specially designed to fit 50cc to 125cc dirt bikes, mini bikes, ATVs and 4 wheel go karts.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Psytfei |
| Brand | Psytfei |
| Item model number | Psytfeibcqvwhpfou |
| Manufacturer part number | Psytfeibcqvwhpfou |
| Item Weight | 1.29 kg |

## Images

![125cc Dirt Bike Sprockets 420 17T Rear Sprocket and 37T Front Sprocket Kit 45 Steel Chain and Sprocket Kit for 50cc 70cc 90cc 110cc 125cc Dirt Pit Bike and Mini Bikes ATVs Go Kart - Image 1](https://m.media-amazon.com/images/I/61IEJngZ5XL.jpg)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-01-26*