Wolf Tooth Components 25mm Long B-Screw for Adapting Old deraileurs When | bike-drivetrain-components
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Wolf Tooth Components 25mm Long B-Screw for Adapting Old deraileurs When | bike-drivetrain-components
High quality stainless steel screw is compatible with most Shimano mountain bike derailleurs.
Wolf Tooth Components 25mm Long B-Screw for Adapting Old deraileurs When | bike-drivetrain-components
物品 #: 4141946

Wolf Tooth Components 25mm Long B-Screw for Adapting Old deraileurs When | bike-drivetrain-components

物品 #: 4141946

HKD 99

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*All items will import from 美國

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存貨僅剩 11 個物品。
現在訂購，約可在下列時間收貨： 星期三, 七月 15
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High quality stainless steel screw is compatible with most Shimano mountain bike derailleurs.
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Note: Step Down Voltage Transformer required for using electronics products of 美國 store (110-120). Recommended power converters 立即購買.

What Stands Out

Versatile Compatibility
Designed to adapt older derailleur systems, making it ideal for retrofitting or upgrading bikes with modern components and compatibility issues.
Durable Construction
Made from high-quality materials ensuring longevity and reliability, while handling the demands of varying riding conditions without compromising performance.
Easy Installation
User-friendly design allows for quick and hassle-free installation, enabling riders to make adjustments conveniently without requiring professional assistance.

產品詳情

Shop for high quality stainless steel 25mm B-screws at Ubuy 香港. Compatible with Shimano mountain bike derailleurs. Perfect for Wolf Tooth GC 42 and GC 40 cogs. Buy now!
  • Replaces stock B-limit screw on Shimano MTB derailleurs
  • Compatible with most Shimano mountain bike derailleurs
  • Used with Wolf Tooth GC 42 or GC 40 large cogs
  • Made of high quality stainless steel
  • Ensures proper adjustment when using replacement cogs
  • 18-8 stainless steel screw for durability
Item Dimensions4 x 2 x 0.25 inches (10.2 x 5.1 x 0.6 cm)
Thread Size4mm
Item Weight0.01 Pounds (0 grams)
Thread CoverageFully Threaded
Fastener SizeM4 x 25mm
Size Name4mm x 25mm
Item Diameter4 Millimeters
Compatible Groove Diameter4 Millimeters
Number of Pieces1
BrandWolf-Tooth
ColorSilver
Fastener TypeScrew (M4 thread size)
UPC812719020152
Global Trade Identification Number00812719020152
Set NameSingle Screw Set (M4 x 25mm)
Number Of Items1
Part NumberBSCREW25
ModelBSCREW25
Unit Count1.0 Count
ManufacturerWolf Tooth
Included ComponentsMiscellaneous Rear Derailleur Part
Screw Head StylePhillips
Screw Point Stylecylindrical
Head TypePhillips
Thread TypeMetric
Set Screw Thread TypeM4 x 0.7mm
Thread StyleM4
Thread Class2B
Maximum Shear Strength550 MPa
Grade RatingPremium
Drive SystemBicycle Derailleur Drive System
Material TypeMulti
Exterior FinishStainless Steel
Metal TypeStainless Steel
Finish TypesStainless Steel
MaterialMulti
Head StylePhillips
Item dimensions L x W x H4 x 2 x 0.25 inches (10.2 x 5.1 x 0.6 cm)

What's in the box

Miscellaneous Rear Derailleur Part

Who Should Buy?

Suitable For
  • Older Derailleur Users

    Ideal for cyclists with older derailleur models needing adjustments for modern setups and ensuring proper shifting performance.

  • Bicycle Mechanics

    Great for bike mechanics who often work on vintage bikes, providing more flexibility in compatibility with various components.

  • Customization Enthusiasts

    Perfect for cyclists looking to customize their bike's shifting system, offering adaptability for different setups and efficiencies.

Not Suitable For
  • Modern Derailleur Users

    Not suitable for users with modern derailleur systems that do not require the adjustment facilitated by this longer screw.

  • Casual Riders

    Casual cyclists may not benefit from this product as they typically use standard components without needing adjustments.

  • Professional Racers

    Professional racers usually prefer specific, high-performance components and may not require the flexibility of this screw.

產品敘述

有疑問？ 與我們聊天

客戶問題＆回答

  • 題: Is this screw compatible with all Shimano derailleurs?

    回答: It is compatible with most Shimano mountain bike derailleurs.
  • 題: Is it easy to install?

    回答: Yes, it replaces the stock B-limit screw on Shimano MTB derailleurs.
  • 題: How durable is the stainless steel screw?

    回答: It is made of high-quality stainless steel, ensuring durability and reliable performance.
  • 題: Is this product compatible with Shimano Derailleurs (specifically a 105 10sp)?

    回答: It fit on a circa 2001 LX.
  • 題: Is this considered a Dropout screw for adjusting tire between stays?

    回答: No it is for adjusting the rear derailleur jockey wheel further from the cog.
  • 題: Will this work on Suntour Honor derailleur?

    回答: I believe all the B-screws are the same.
  • 題: Shimano Ultegra 6800 compatible?

    回答: Worked in my Shimano setup.
  • 題: Will this work on a pure fix frame?

    回答: This is a b limit screw designed to allow you to adjust the rear derailleur jockey wheel further away from the cogs to accommodate a larger cog. It may not be suitable for your application.
  • 題: What width or size is this M4? Thread type and length.

    回答: Take the old one to the hardware store and match the threads and size. They are metric. 25mm is long enough to adjust body angle of derailleur for clearance between biggest cassette cog and upper jockey wheel when in lowest gear.

Wolf Tooth Front Derailleurs Editorial Review

  • ubuy 香港
  • ubuy 香港

If you're looking for a replacement or upgrade to your derailleur's B-screw, the Wolf Tooth Components 25mm B-Screw is a compatible option for many Shimano and SRAM derailleurs. This M4 screw is longer than the standard ones to allow for better adjustment of the cage to the low cog angle, preventing contact between the guide pulley teeth and the low-speed cog. Customers have been satisfied with their purchases of the Wolf Tooth Components 25mm B-Screw, praising its perfect fit and well-made Construction. It is worth noting that some of the reviews seem to be about a completely different product (front floor mats for a BMW), so make sure to double-check that you're purchasing the correct item.

Customer Reviews & Ratings

4.5
243 客戶評分
  • 5 星
    77%
  • 4 星
    11%
  • 3 星
    5%
  • 2 星
    2%
  • 1 星
    5%

評價此產品

與其他客戶分享您的想法

優點

  • Compatible with many Shimano and SRAM derailleurs
  • Long screw allows for better cage adjustment to prevent contact between pulley teeth and low-speed cog
  • Customers have praised its perfect fit and Construction

缺點

  • Make sure to double-check that you're purchasing the correct item (some reviews seem to be about a completely different product)

Platform Trust & Buyer Confidence

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3.9/5 90 + reviews
Read reviews
S
Sam
Verified buyer

“Great product, good packing, the goods arrived quickly and well protected.”

6 Jun 2026 · via Trustpilot
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Roxy
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“Great products and services”

17 April 2026 · via Trustpilot
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Samuel
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“Good market place with decent prices”

8 October 2025 · via Trustpilot
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Gram4eild
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“whatever you want you will get delivered at reasonable pricing. I am a regular customer.”

18 Mar 2025 · via Trustpilot
HT
Henry
Verified buyer

“I've had a wonderful experience shopping with UBUY Hong Kong. The customer service is outstanding, and my orders always arrive on time. Very satisfied with their services!”

2 Jun 2024 · via Trustpilot
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HKD 99

現在訂購，約可在下列時間收貨： 星期三, 七月 15

QTY:

存貨僅剩 11 個物品。
Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

特色和優勢

  • Compatible with most Shimano mountain bike derailleurs
  • Replaces stock B-limit screw on Shimano MTB derailleurs
  • Made of high-quality stainless steel
  • Specifically designed for use with Wolf Tooth GC 42 or GC 40 large cogs
  • Ensures proper adjustment when using the replacement cogs
  • Guarantees durability and reliable performance