---
product_id: 10809285
title: "JT Sprockets JTR486.42 42T Steel Rear Sprocket , black"
brand: "jt"
price: "307.16 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Jt"
url: https://www.desertcart.tn/products/10809285-jt-sprockets-jtr486-42-42t-steel-rear-sprocket-black
store_origin: TN
region: Tunisia
---

# Heat treated & hand finished 42 teeth precision cut C49 high carbon steel durability JT Sprockets JTR486.42 42T Steel Rear Sprocket , black

**Brand:** jt
**Price:** 307.16 DT
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your ride with the ultimate blend of strength and smoothness!

## Quick Answers

- **What is this?** JT Sprockets JTR486.42 42T Steel Rear Sprocket , black by jt
- **How much does it cost?** 307.16 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/10809285-jt-sprockets-jtr486-42-42t-steel-rear-sprocket-black)

## Best For

- jt enthusiasts

## Why This Product

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

## Key Features

- • **Precision 42T Design:** Optimized tooth count for smoother acceleration and ideal cruising RPMs
- • **Heat Treated Perfection:** Enhanced wear resistance through expert heat treatment and hand finishing
- • **Lightweight Performance:** Approximately 2/3 the weight of stock sprockets for improved handling
- • **Premium C49 Steel Build:** Engineered from high carbon steel for unmatched strength and longevity
- • **Rigorous Quality Control:** 10-step inspection process ensuring top-tier reliability every ride

## Overview

The JT Sprockets JTR486.42 is a 42-tooth rear sprocket crafted from premium C49 high carbon steel, heat treated and hand finished for superior durability. Designed to optimize cruising RPMs and acceleration, it offers a lighter, wider gear profile that enhances ride smoothness and hill climbing without sacrificing performance. Each sprocket undergoes 10 quality control checks, making it a trusted choice for powersports enthusiasts seeking reliable, long-lasting drivetrain upgrades.

## Description

DescriptionJT Sprockets ensure maximum durability and performance through accurate machining and using only the best grade of C49 High Carbon steel. Heat treated and hand finished to perfection, all JT sprockets meet or exceed the highest possible quality standards for the powersports industry. Each sprocket goes through 10 quality control checks before it leaves the factory.

Review: Great Sprocket for 2012 Ninja 250R - The sprocket has been on my bike for a few hundred miles and shows no wear so it's made of high quality material and the finish is done well. It is about 2/3 the weight of the stock 45 tooth sprocket that comes on the Ninja 250. I previously installed the 15 tooth front sprocket (JTF516.15) on my bike (the 15 tooth front is still installed) but I still wanted to drop the cruizing RPMs a bit so I bought this. With this 42 tooth and with the 15 tooth front sprocket, the RPMs are ~6400 @ 60mph. The gears are noticibly wider than before which makes driving in town better/smoother. Going up hills is still easy...a 10% grade at 60mph is no problem in 6th gear (I'm 180lbs). The acceleration is not noticibly affected...but I have never went full throttle off the line. The bike does not bog when taking off so this is not too tall gearing for my bike. IMO the 15 tooth front and 42 tooth back sprocket is a perfect match for the Ninja 250.
Review: 2025 Kawasaki Eliminator - Paired this rear 42T with a 15T front and bike runs awesome. Note however that the picture listed is not accurate of the actual item I received.

## Features

- Made from C49 high carbon steel

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000GTTUCE |
| Best Sellers Rank | #1,543,534 in Automotive ( See Top 100 in Automotive ) #2,282 in Powersports Sprockets |
| Brand | JT |
| Customer Reviews | 4.2 4.2 out of 5 stars (41) |
| Date First Available | January 30, 2007 |
| Exterior | Painted |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.5 pounds |
| Item model number | JTR486.42 |
| Manufacturer | JT Sprockets |
| Manufacturer Part Number | JTR486.42 |
| Model | JTR486.42 |
| Product Dimensions | 9 x 9 x 5 inches |
| Safety Rating | other |

## Images

![JT Sprockets JTR486.42 42T Steel Rear Sprocket , black - Image 1](https://m.media-amazon.com/images/I/61QcHvD0zBL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Sprocket for 2012 Ninja 250R
*by C***R on February 15, 2013*

The sprocket has been on my bike for a few hundred miles and shows no wear so it's made of high quality material and the finish is done well. It is about 2/3 the weight of the stock 45 tooth sprocket that comes on the Ninja 250. I previously installed the 15 tooth front sprocket (JTF516.15) on my bike (the 15 tooth front is still installed) but I still wanted to drop the cruizing RPMs a bit so I bought this. With this 42 tooth and with the 15 tooth front sprocket, the RPMs are ~6400 @ 60mph. The gears are noticibly wider than before which makes driving in town better/smoother. Going up hills is still easy...a 10% grade at 60mph is no problem in 6th gear (I'm 180lbs). The acceleration is not noticibly affected...but I have never went full throttle off the line. The bike does not bog when taking off so this is not too tall gearing for my bike. IMO the 15 tooth front and 42 tooth back sprocket is a perfect match for the Ninja 250.

### ⭐⭐⭐⭐⭐ 2025 Kawasaki Eliminator
*by S***Y on September 17, 2025*

Paired this rear 42T with a 15T front and bike runs awesome. Note however that the picture listed is not accurate of the actual item I received.

### ⭐⭐⭐⭐ High Quality Genuine JT Sprocket (Black)
*by M***D on February 27, 2022*

Bought this JTR486.42 for my ninja 300. Delivery was delayed, item was delivered after 1 month from expected date.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/10809285-jt-sprockets-jtr486-42-42t-steel-rear-sprocket-black](https://www.desertcart.tn/products/10809285-jt-sprockets-jtr486-42-42t-steel-rear-sprocket-black)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-02-05*