---
product_id: 247497489
title: "Jeremywell #40 Roller Chain Sprocket B Type 1\" Bore Hardened 12 Tooth"
brand: "jeremywell"
price: "€ 44.52"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/247497489-jeremywell-40-roller-chain-sprocket-b-type-1-bore-hardened
store_origin: HR
region: Croatia
---

# 12 hardened teeth 1" precision bore medium carbon steel durability Jeremywell #40 Roller Chain Sprocket B Type 1" Bore Hardened 12 Tooth

**Brand:** jeremywell
**Price:** € 44.52
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your ride with precision power!

## Quick Answers

- **What is this?** Jeremywell #40 Roller Chain Sprocket B Type 1" Bore Hardened 12 Tooth by jeremywell
- **How much does it cost?** € 44.52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/247497489-jeremywell-40-roller-chain-sprocket-b-type-1-bore-hardened)

## Best For

- jeremywell enthusiasts

## Why This Product

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

## Key Features

- • **12 Hardened Teeth:** Optimized for smooth, reliable chain engagement and longevity.
- • **Lightweight & Compact:** At just 3.52 oz and 4x6x1 inches, it’s built for performance without bulk.
- • **Precision 1" Bore Fit:** Engineered for seamless integration with your drivetrain.
- • **Double Pitch Strand Ready:** Specialized design to handle double pitch chains for enhanced cycling efficiency.
- • **ANSI & MARTIN Standard Steel:** Crafted from medium carbon steel for superior strength and wear resistance.

## Overview

The Jeremywell #40 Roller Chain Sprocket features a 1-inch bore and 12 hardened teeth made from medium carbon steel, meeting ANSI and MARTIN standards. Designed for durability and smooth chain engagement, this lightweight sprocket is ideal for cycling drivetrain upgrades requiring double pitch strand compatibility.

## Description

Jeremywell #40 Roller Chain Sprocket B Type 1" Bore Hardened 12 Tooth

## Features

- Bore Size: 1"
- Sprocket Part Number: 40BS12H
- Number of Teeth: 12
- 1045 Medium Carbon Steel meets ANSI and MARTIN Standard

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Jeremywell |
| Part Number | 40BS12H |
| Item Weight | 3.52 ounces |
| Product Dimensions | 4 x 6 x 1 inches |
| Item model number | 40BS12H |
| Item Package Quantity | 1 |
| Special Features | double_pitch_strand |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Jeremywell #40 Roller Chain Sprocket B Type 1" Bore Hardened 12 Tooth - Image 1](https://m.media-amazon.com/images/I/612nw7a2geL.jpg)

## Available Options

This product comes in different **Size, Style** options.

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**Shop now:** [https://www.desertcart.hr/products/247497489-jeremywell-40-roller-chain-sprocket-b-type-1-bore-hardened](https://www.desertcart.hr/products/247497489-jeremywell-40-roller-chain-sprocket-b-type-1-bore-hardened)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-03*