Wolf Tooth B Screw 25

When using the GC 40 with a Shimano rear derailleur, a longer B-screw may be needed. A longer b-screw is almost always needed when using the GC42 with a Shimano rear derailleur. NOTE You will not need this longer B-screw with the GoatLink. We strongly recommend the GoatLink for your Shimano rear derailleur when using the GCs, as it will improve long term shifting and drivetrain life. Be sure to check you have a compatible rear derailleur per the details on the GoatLink product page. SPECIFICATIONS Weight: 2.5g Material: High-quality 18-8 stainless steel Size: M4 x 25mm Made in the USA The Story Wolf Tooth was founded to design and manufacture precision cycling products that emphasize function, performance, and reliability to meet the needs of our fellow racers and riders. We are a group of cyclists in Minneapolis, Minnesota that spend a lot of time talking about bike components. Like most detail-obsessed riders, we're always looking for new products that could make our bikes lighter, faster, more versatile, or more reliable. We pride ourselves on delivering premium products of the highest quality.