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Big Bro 5.0
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Secure wide crack protection with the adjustable Big Bro tube chock
What Our Gearhead® Experts Are Saying:
"I've carried Big Bros for offwidth days where normal cams just don't cut it. The range is huge, which means fewer pieces on the rack when you're dealing with monster cracks. Once it's set correctly it feels really secure and doesn't tend to walk like big cams can. The tradeoff is that placement takes a little practice and they’re slower to place when you're pumped. Still, for wide cracks they’re one of the lightest and most efficient options."
Who It’s For
Trad climbers tackling wide cracks and offwidth terrain
These work best for experienced climbers who are comfortable placing specialized protection and managing larger placements on lead. Climbers focused on desert towers, granite offwidths, and wide splitter cracks will appreciate the range and reduced rack weight compared to carrying multiple oversized cams.
What It’s For
Wide crack and offwidth protection
The Big Bro is purpose-built for protecting large parallel cracks where traditional cams become heavy, bulky, or limited in range. It excels in offwidths, squeeze chimneys, and large splitter cracks on desert sandstone and granite walls. The telescoping tube design provides reliable protection in placements too wide for standard cams while keeping rack size manageable on long trad routes.
Why We Like It
Massive range, stable placements, rack efficiency
The telescoping tube design covers a huge expansion range, allowing a single piece to protect crack sizes that would normally require several oversized cams. Once expanded, the Big Bro resists movement and directional pulls, reducing the chance of walking deeper into the crack. The slim profile racks flatter than large cams, making it easier to carry wide crack protection on longer routes.
Details
- Telescoping tube design provides wide crack protection with a massive expansion range
- Large size coverage reduces the need for multiple oversized cams on the rack
- Resists directional pulls to help prevent walking deeper into cracks
- Slim profile packs flatter and racks easier than large camming devices
- Optimized for offwidths, squeeze chimneys, and large parallel cracks
- Preset expansion allows secure placements in wide crack systems
- Item #TRGC083
- Placement Range
- [1] 3.2–4.3in (81–109mm), [2] 4–5.7in (101–145mm), [3] 5.3–8in (135–203mm), [4] 7.5–12in, (191–305mm), [5] 11.3–18.4in (287–467mm)
- Includes
- 1 Big Bro tube chock
- Claimed Weight
- [1] 6.2oz, [2] 7.2oz, [3] 9.3oz, [4] 12.3oz, [5] 20.4oz
- Activity
- trad climbing

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Established in Boulder, Colorado in 1991, Trango is an athlete-driven brand committed to pushing the boundaries of climbing and enhancing climbing technology.