Bliss Climbing Tech - Gate Bumper and Spine Bumper Kits
Description
Prevent Unwanted Carabiner Loading with the Gate Bumper!
Concerned that your device might load against your carabiner gate? Stay safe with the Gate Bumper!
Key Features:
- Universal Compatibility: Designed to work with nearly all carabiners and devices.
- Prevents Gate Loading Issues: Many devices and carabiners can interact unpredictably, causing both cross-loading and lever-loading of the gate. The Gate Bumper effectively prevents these issues, ensuring reliable performance.
- Added Grip on the Gate: Provides extra grip, making it more convenient and comfortable to handle the carabiner, especially in challenging conditions.
- Extensive Testing: We tested the Gate Bumper with popular devices such as the Petzl Micro Traxion, Mini Traxion, Rescucender, TAZ LOV3, Edelrid Spoc, Climbing Technology Cric, Fixe and Petzl Bolt Hangers. Carabiners used in testing include the Petzl OK Triact and Screw, Petzl Attache and William Screw, Camp Steel Oval, Climbing Technology Tech Pillar Pro, and Black Diamond Nitron Screw. The Gate Bumper solved issues in all tested combinations—and many more!
Important Note: While the Gate Bumper prevents unwanted gate loading, it does not stop “clean cross-loading.” It’s an excellent choice for applications such as Top Rope Solo, leader protection in simul climbing, and general climbing. However, for Lead Rope Solo, we recommend a different solution, as impact forces may exceed carabiner cross-load ratings (typically around 7kN).
Questions? Reach out to us anytime. Your safety is our top priority!
Technical Details
Crafted from 3D-Printed TPU for Optimal Durability
The Gate Bumper’s 3D-printed TPU construction offers exceptional abrasion resistance while remaining flexible enough to fit a wide range of carabiners.
Weight: Only 3.5 grams, it adds virtually no weight to your setup.
Color Update: The new color is translucent blue, crafted from a superior, softer TPU for enhanced performance. The turquoise version is now considered a vintage item.
Proudly Made in Québec
Compatibility
Recommended Carabiners for Use with the Gate Bumper
Here’s our top-rated list of carabiners that pair exceptionally well with the Gate Bumper:
- Petzl: OK Triact (★★★★★), OK Screw (★★★★★), Sm’D Screw (★★★★), Attache 3D (★★★★)
- DMM: Ceros Locksafe (★★★), Ultra O Locksafe (★★★) (DMM carabiners generally have fewer gate compatibility issues)
- Mad Rock: Oval Tech Screw (★★★★★)
- Metolius: Gatekeeper Screw (★★★★★)
- Black Diamond: Gridlock Screw (★★★★)
- Rock Exotica: Pirate ORCA (★★★★)
- Camp: Steel Oval Lock (★★★★)
- Climbing Technology: Pillar Pro TGL (★★★★)
- Edelrid: Bulletproof Screw FG (★★★)
Other Compatible Carabiners
- Beal: Orient Express
- Black Diamond: Nitron Screw, Gridlock Screw
- Camp: Steel Oval Lock
- Climbing Technology: Pillar Pro TGL
- DMM: Ceros Locksafe, Perfect O Locksafe, Ultra O Locksafe
- Edelrid: Bulletproof Screw FG, Pure Screw
- Kailas: Rota
- Mad Rock: Oval Tech Screw, Ultra Tech Screw, HMS Ultra Tech Triple L
- Metolius: Gatekeeper Screw, Bravo
- Petzl: Attache 3D, OK Ball Lock, OK Screw, OK Triact, Rollclip Z Screw, Sm’D Screw, William Screw
- Rock Exotica: Pirate ORCA
- Simond: Goliath HMS Screw
Incompatible Carabiners
These carabiners either have thick gates that don’t require the Gate Bumper or have compatibility issues:
- DMM: Ultra O Durolock* (thick gate)
- Kong: Ovalone Auto ANSI (thick gate)
- Petzl: Bm’D ANSI, Omni Screw, Oxan Steel ANSI (thick gates)
Note: For DMM Buddy 100/200 and ISC Rocker (or similar), use a thinner-gate carabiner without a Gate Bumper.
Special Case (Incompatible Due to Gate Thickness):
- Grivel: Plume Nut K3N (gate too thin)
If you have questions about compatibility or need further assistance, feel free to contact us.
Select Your Quantity and Click “Add to cart”.
Get the Best Deal by Buying Gate Bumpers!!
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Save Big: Order 2 Gate Bumpers for 25% off. Order 3 or more Gate Bumpers for an even better discount of 30% off!
1- Gate Bumper Installation
2- Gate Bumper in Use


The bumpers are a good addition to my LRS setup, they give me peace of mind to avoid cross loading and strong metal on metal contact. I have one set on my DMM Ceros and Revo, and split another between my Microtrax and my anchor biner. The only downside, since I live in Europe, was a long delivery time and I had to pay Duty when it arrived. Nevertheless, I am overall very satisfied with the purchase and happy to support Yann who has posted hours of free material for us LRS weirdos.