---
product_id: 10808130
title: "Sprockets JTF1321.13 13T Steel Front Sprocket , black , 13 Tooth"
brand: "jt"
price: "₩39663"
currency: KRW
in_stock: true
reviews_count: 6
url: https://www.desertcart.kr/products/10808130-sprockets-jtf1321-13-13t-steel-front-sprocket-black-13-tooth
store_origin: KR
region: South Korea
---

# Heat treated & hand finished 13 precision teeth SCM415 chromoly steel alloy Sprockets JTF1321.13 13T Steel Front Sprocket , black , 13 Tooth

**Brand:** jt
**Price:** ₩39663
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your ride with precision power and unstoppable durability!

## Quick Answers

- **What is this?** Sprockets JTF1321.13 13T Steel Front Sprocket , black , 13 Tooth by jt
- **How much does it cost?** ₩39663 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/10808130-sprockets-jtf1321-13-13t-steel-front-sprocket-black-13-tooth)

## 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

- • **Sleek Black Painted Finish:** Modern aesthetic that resists corrosion and complements your ride’s style.
- • **Heat Treated & Hand Finished:** Enhanced wear resistance with meticulous craftsmanship for flawless fit.
- • **Premium SCM415 Chromoly Steel:** Unmatched strength and durability for long-lasting performance under pressure.
- • **Precision Engineered 13T Design:** Optimized tooth count for peak power transfer and smooth acceleration.
- • **Rigorous 10-Step Quality Control:** Every sprocket undergoes strict inspections ensuring top-tier reliability.

## Overview

The JT Sprockets JTF1321.13 is a 13-tooth front sprocket crafted from high-grade SCM415 chromoly steel alloy. Heat treated and hand finished, it delivers exceptional strength and longevity. Each sprocket passes 10 quality control checks, ensuring premium performance and reliability for powersports enthusiasts.

## Description

DescriptionJT Sprockets ensures maximum durability and performance through accurate machining and using only the best grade of SCM415 chromoly steel alloy. 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.

## Features

- Made from SCM415 chromoly steel alloy

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | JT Sprockets |
| Brand | JT |
| Model | JTF1321.13 |
| Item Weight | 4.6 ounces |
| Product Dimensions | 6 x 4.5 x 0.5 inches |
| Item model number | JTF1321.13 |
| Is Discontinued By Manufacturer | No |
| Exterior | Painted |
| Manufacturer Part Number | JTF1321.13 |

## Images

![Sprockets JTF1321.13 13T Steel Front Sprocket , black , 13 Tooth - Image 1](https://m.media-amazon.com/images/I/61m0m6a79SL.jpg)

## Questions & Answers

**Q: Will this fit my 2017 crf250l?**
A: Yup, the 2017 has the same sprockets as the earlier model crf250l

**Q: I want to use these for welding art.  Are there actually 4 pieces?**
A: no it's a single sprocket

**Q: Does this fit the gt aggressor pro?**
A: No..its for a dirtbike not a bicycle

**Q: Will this fit a 2021 crf300l?**
A: Mine went on a 2021 300l rally.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Fantastic upgrade for the money
  

*by C***S on Reviewed in the United States on August 10, 2023*

2017 CRF250L changed 14T to 13T for riding on loose dirt, sand, logging roads in Cascade mountains very impressed by versatility now slowing down speeds for 1st thru 3rd allowing 3nd at 12/13mph in 2nd gear with plenty of throttle to speed up at this speed no lugging occurs.  Speedo is off 10% per local radar police trailer, online calculator says 7% regardless this is a must have for trails and on roads to allow  full use of 6th gear at 50mph and greater best cruising speed is 60mph corrected and still achieving over 55 mpg.  I highly recommend people consider this on a tight budget for making your bike a great on and off road cycle.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Game changer for CRF300L
  

*by M***E on Reviewed in the United States on March 9, 2023*

I haven't done Amazon reviews in years but I wanted to make this for anyone on the fence.My order or mods was a little backwards compared to most. Did suspension and then added cams, 550 1.5 Tune, and velocity stack. Really woke the little Honda up and it held 80mph up hill without issue.Was still running stock gearing with a 120/90R18 Tusk D Sport and while it was great on road, when I hit single track or powerline roads it lacked the power to loft the front tire over trees and washouts in 2nd and third without clutching up.Was toying with the idea of a 42T rear as it would put me closer to stock ratio with my tire, but decided to try this considering I could use the stock chain and was cheap as chips. Arrived fast and putting it on took about 15 minutes.SO glad I did it. Wow. Im 260lbs without gear and can now get the front end up in 2nd and sometimes 3rd without clutch. Just preload the front and pull when I pin the throttle.Off-road it climbs like a little red goat. First and 2nd are unstoppable. But it's not so low where I'm constantly rowing up and down through the gears.No compromises on the highway either. Too speeds increased and the bike effortlessly holds gears putting around town. Hit 95mph on uncorrected speedometer yesterday which puts me around 91mph. Previously 85mph was maxing it out. It's slightly more vibey, but I mean it when I say slightly. It by no means feels like the bike is coming apart or making your hands numb.The motor just feels less stressed now and less chuggy at high and low speeds.If you are on the fence about adding this mod and have a larger tire than stock you will absolutely love this. If your focus is more off-road oriented you can pair this with a 42T or 43T and you'll have all the tractor factor you need.Honestly feel this is how it should have come from the factory.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good quality
  

*by G***R on Reviewed in the United States on June 28, 2023*

The sprocket is good fits perfect on a crf300l, and if you run a larger tire than stock (120/100-18) it makes up for the added diameter and makes the speedometer almost exactly to the factory calibration.

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**Shop now:** [https://www.desertcart.kr/products/10808130-sprockets-jtf1321-13-13t-steel-front-sprocket-black-13-tooth](https://www.desertcart.kr/products/10808130-sprockets-jtf1321-13-13t-steel-front-sprocket-black-13-tooth)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-02*