---
product_id: 65684652
title: "Wolf Tooth Components 25mm long B-Screw for adapting old deraileurs when using a by Wolf Tooth Components"
brand: "wolf tooth"
price: "₨11816"
currency: LKR
in_stock: true
reviews_count: 6
category: "Wolf Tooth"
url: https://www.desertcart.lk/products/65684652-wolf-tooth-components-25mm-long-b-screw-for-adapting-old
store_origin: LK
region: Sri Lanka
---

# 25mm precision length High-grade stainless steel Optimized for Shimano MTB derailleurs Wolf Tooth Components 25mm long B-Screw for adapting old deraileurs when using a by Wolf Tooth Components

**Brand:** wolf tooth
**Price:** ₨11816
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your ride with precision — because every millimeter counts!

## Quick Answers

- **What is this?** Wolf Tooth Components 25mm long B-Screw for adapting old deraileurs when using a by Wolf Tooth Components by wolf tooth
- **How much does it cost?** ₨11816 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/65684652-wolf-tooth-components-25mm-long-b-screw-for-adapting-old)

## Best For

- wolf tooth enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Impactful Upgrade:** A small component with a big impact—boost your bike’s performance without a full overhaul.
- • **Precision Fit for Wide-Range Cogs:** Specifically engineered to clear 40-42 tooth cogs with ease, eliminating derailleur misalignment.
- • **Effortless Drivetrain Optimization:** Fine-tune your derailleur cage position for smoother, cleaner shifting every ride.
- • **Seamless Shimano MTB Compatibility:** Direct replacement for stock B-limit screws on Shimano mountain bike derailleurs.
- • **Durable Stainless Steel Construction:** Crafted from premium stainless steel for corrosion resistance and long-lasting performance.

## Overview

The Wolf Tooth Components 25mm B-Screw is a high-quality stainless steel replacement part designed to optimize Shimano MTB derailleur alignment when using large 40 or 42-tooth cogs. It ensures precise derailleur cage positioning for smoother shifting and improved chain management, making it an essential upgrade for riders seeking reliable performance on wide-range cassettes.

## Description

Need a bit more space for your derailleur to clear a 40 or 42-tooth cog?

Review: It does the job - It is a good screw
Review: The Wolf Tooth 25mm B-Screw might seem like a tiny, unassuming component, but it makes a huge difference in your bike's drivetrain setup. If you’ve got a Shimano derailleur and are looking to ensure proper derailleur alignment, this B-screw is a must-have. Made from durable materials, it’s designed to provide precision adjustment for your derailleur cage, giving you cleaner shifts and better chain management. It’s especially helpful if you’ve recently swapped to a wide-range cassette or if your original B-screw has worn down. Final Verdict: 9/10 – Simple, effective, and well-made. A small upgrade that improves your bike's performance. 🚴‍♂️🔩

## Features

- Replaces stock B-limit ************************************************************* on Shimano MTB derailleurs
- Use if you are using Wolf Tooth GC 42 or GC 40 large cogs
- High quality stainless steel

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LMY7BA0 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 204,923 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 551 in Screws (Sports & Outdoors) 639 in Bike Derailleurs & Parts |
| Colour | Silver |
| Customer Reviews | 4.5 4.5 out of 5 stars (236) |
| Cutting Diameter | 4 Millimetres |
| Date First Available | 15 July 2014 |
| Finish | Uncoated |
| Head Style | Phillips |
| Included components | Miscellaneous Rear Derailleur Part |
| Item Package Quantity | 1 |
| Item Weight | 4.54 g |
| Item diameter | 4 Millimetres |
| Item model number | BSCREW25 |
| Material | Stainless Steel |
| Number of Pieces | 1 |
| Part number | BSCREW25 |
| Pattern | Solid |
| Plug profile | Braze On Mount |
| Shape | screw |
| Size | M4 x 25mm |
| Style | Miscellaneous Rear Derailleur Part |

## Product Details

- **Exterior finish:** Stainless Steel
- **Head style:** Phillips
- **Item dimensions L x W x H:** 10.2 x 5.1 x 0.6 centimetres
- **Material:** Stainless Steel
- **Thread size:** 4mm

## Images

![Wolf Tooth Components 25mm long B-Screw for adapting old deraileurs when using a by Wolf Tooth Components - Image 1](https://m.media-amazon.com/images/I/4139srnvM0L.jpg)
![Wolf Tooth Components 25mm long B-Screw for adapting old deraileurs when using a by Wolf Tooth Components - Image 2](https://m.media-amazon.com/images/I/61DD++TmylL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ It does the job
*by S***S on 4 September 2022*

It is a good screw

### ⭐⭐⭐⭐⭐ Review
*by N***9 on 2 February 2025*

The Wolf Tooth 25mm B-Screw might seem like a tiny, unassuming component, but it makes a huge difference in your bike's drivetrain setup. If you’ve got a Shimano derailleur and are looking to ensure proper derailleur alignment, this B-screw is a must-have. Made from durable materials, it’s designed to provide precision adjustment for your derailleur cage, giving you cleaner shifts and better chain management. It’s especially helpful if you’ve recently swapped to a wide-range cassette or if your original B-screw has worn down. Final Verdict: 9/10 – Simple, effective, and well-made. A small upgrade that improves your bike's performance. 🚴‍♂️🔩

### ⭐⭐⭐⭐⭐ Review
*by D***C on 5 July 2024*

I used this to replace the B limit screw on my Shimano derailleur after it was bent in a particularly muddy mountain bike race. It works perfectly!

## Frequently Bought Together

- Wolf Tooth Components 25mm B-Screw
- Wolf Tooth Components Roadlink
- Wolf Tooth GoatLink for Shimano

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-25*