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25mm B Screw

Wolf Tooth 25mm B Screw
This product has been discontinued and is no longer stocked by MTB Direct.
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Description

The product is required for Shimano rear derailleurs when using the GC 40 and GC 42 extender cogs.

This is an inexpensive solution for extender cogs, however, we recommend using the Goatlink. The Goatlink eliminates the need for this product and will result in better shifting performance.

Product Reviews

3.7
Rated 3.7 out of 5 stars
Based on 3 reviews
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 1
67%would recommend this product
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3 reviews
  • Gabe
    I recommend this product
    Rated 5 out of 5 stars
    3 years ago
    Good cheep solution

    Works great. I used on Shimano SLX 10 speed derailed using 11t-42T Sunrace cassette with good results. I ordered the wolf tooth Goat link as well but have not installed it as this did the trick just fine. Very happy.

    I am experiencing some shifting irregularities in middle gears but I think this will be fixed with adjustment. I will update if that is the case.

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  • G.
    I recommend this product
    Rated 5 out of 5 stars
    7 years ago
    Great quality. Didn't end up

    Great quality. Didn't end up needing it. Maybe on another bike in the future.

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  • David F.
    I do not recommend this product
    Rated 1 out of 5 stars
    7 years ago
    Wolf tooth b-screw

    It does not fit the slx derailleur

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Sent directly from our partner

This item is sent directly from our partner and will arrive separately if you order with other items.

Special Order

Special Order items are ordered for you from our supplier. Your whole order will be held until all items are in stock and will ship in 10-14 days.

If you are ordering other items which are in stock, you may wish to order those separately so they ship without delay.