The world’s best-selling, most trusted cam, now with an extendable sling for optimal rope management.
This extendable C4 contains all the features of the latest C4, with the added versatility of an extendable sling. Perfect for wandering routes that weave around corners and roofs, the extendable C4 helps dial in your ideal rope line without the added weight of extra runners. With the same lightweight and optimized lobes as the traditional C4 and a comparable overall weight, the C4 extendables work well in conjunction with a set of C4s or as a full rack on their own.
From clean climbing, to conservation, Black Diamond is committed to protecting the people and places we love.
We trust what we make because we use what we make. We trust what we make because we use what we make. All Black Diamond products are covered by a two year warranty policy. Learn More
Tough enough for climbing, built to handle anything. From days on the trail, miles on the road, hours at the office, our lifestyle apparel pays homage to our roots, while bringing style and functionality to our lives beyond the crag.
Overall rating: 5.0 / 5 from 2 reviews.
Review topics: [].
"With my older WC cams, you need to clip the correct strand to extend. Due to the sewn portion. With these BD cams, either strand will extend fine. A definite improvement over the older WC cams."
"Not a review, but a suggestion: Add some relevant data about the extendable slings. Length, material, strength, etc. . BD used to avoid extendable slings as they said the wrap around the cam wire weakened the sling. What has changed? Excited to see these--could save a lot of runners on the rack--but give us some details!"
