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Wolf Tooth Components 25mm Long B-Screw for Adapting Old deraileurs When

Product ID: 12975928

Details

Exterior Finish
Stainless
Head Style
Phillips
Item dimensions L x W x H
4 x 2 x 0.25
Material
Multi
Thread Size
4mm

🔩M4 x 25mm precision screw

🛡️18-8 stainless steel durability

🚵‍♂️Optimized for Shimano MTB derailleurs

€ 9.83

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Upgrade your ride with precision and power — don’t get left behind!

MAXIMIZED CLEARANCE - Enables use of Wolf Tooth GC 42 and GC 40 large cogs, unlocking bigger cassette setups without compromise.
PRECISION ENGINEERING - M4 x 25mm thread size ensures a secure fit and optimal derailleur adjustment every ride.
PROVEN RIDER APPROVED - Highly rated by cyclists upgrading GRX and 1x conversions—join the elite who demand more from their drivetrain.
SEAMLESS COMPATIBILITY - Perfectly replaces stock B-limit screws on Shimano mountain bike derailleurs for flawless gear shifts.
PREMIUM STAINLESS STEEL - Crafted from high-grade 18-8 stainless steel for corrosion resistance and long-lasting performance.

The Wolf Tooth Components 25mm Long B-Screw is a premium stainless steel replacement screw designed to adapt Shimano mountain bike derailleurs for use with larger Wolf Tooth GC 42 and GC 40 cogs. Engineered for durability and precise fit, it enables riders to expand their cassette range and optimize drivetrain performance, making it a must-have upgrade for serious cyclists seeking enhanced gear clearance and reliability.

Specifications

ASIN	B00LMY7BA0
Best Sellers Rank	#197,929 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1,172 in Exercise Machine Parts & Accessories
Brand	Wolf Tooth
Color	Silver
Compatible Groove Diameter	4 millimeters
Customer Reviews	4.4 out of 5 stars 243 Reviews
Drive System	Bicycle Derailleur Drive System
Exterior Finish	Stainless Steel
Fastener Size	M4 x 25mm
Fastener Type	Screw (M4 thread size)
Finish Types	Stainless Steel
Global Trade Identification Number	00812719020152
Grade Rating	Premium
Head Style	Phillips
Head Type	Phillips
Included Components	Miscellaneous Rear Derailleur Part
Item Diameter	4 millimeters
Item Dimensions	4 x 2 x 0.25 inches
Item Highlight	cog
Item Weight	4.54 g
Item dimensions L x W x H	4 x 2 x 0.25 inches
Manufacturer	Wolf Tooth
Material	Multi
Material Type	Multi
Maximum Shear Strength	550 MPa
Model	BSCREW25
Number Of Items	1
Number of Packs	1
Number of Pieces	1
Part Number	BSCREW25
Point Style	cylindrical
Screw Head Style	Phillips
Screw Point Style	cylindrical
Set Name	Single Screw Set (M4 x 25mm)
Set Screw Thread Type	M4 x 0.7mm
Size Name	4mm x 25mm
Thread Class	2B
Thread Coverage	Fully Threaded
Thread Size	4mm
Thread Style	M4
Thread Type	Metric
UPC	812719020152
Unit Count	1 Count
Warranty Description	Limited Warranty

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€ 9.83

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews