The YETI 12x148mm Gen3 derailleur hanger is the essential safety component for all YETI MTB frames equipped with a Boost 12x148mm rear axle. Designed to sacrifice itself in case of impact, this hanger protects your frame and derailleur against costly damage. Machined from 6061 T6 aluminum by CNC, it guarantees impeccable dimensional precision and perfect drivetrain alignment, ensuring smooth and reliable shifting.

Technical Summary

This third-generation derailleur hanger (Gen3) is referenced under number 300060073 at YETI Cycles and under EAN code 200020487. It stands out for its high-precision CNC machining, black anodized anti-corrosion finish, and extensive compatibility with the entire modern YETI range: SB4.5, SB5, SB5+, SB5.5, SB6, SB100, SB115, SB130, SB140, SB150, SB165, as well as ASRC Carbon and ARC Carbon models since 2015. Supplied with its mounting bolt, it installs quickly without specific tools, making it a spare accessory to always have in your backpack for mountain rides.

Technical Highlights

• Aerospace-grade material: 6061 T6 Aluminum, high-strength alloy used in the aerospace industry, offering an excellent stiffness-to-weight ratio.
• Precision CNC machining: Tight tolerance for optimal derailleur alignment and flawless shifting quality, far superior to original forged hangers.
• Boost 12x148mm standard: Designed specifically for modern MTB frames equipped with a 12mm diameter rear axle and 148mm rear spacing.
• Sacrificial function: In case of lateral impact (fall, branch, rock), the hanger deforms or breaks before the frame and derailleur, saving you a much larger bill.
• Anodized finish: Black anodized surface for enhanced protection against oxidation, wear and scratches.
• Optimized weight: Approximately 30 to 35 grams depending on measurements, minimal weight for maximum safety.
• Bolt included: Supplied with appropriate mounting hardware for immediate installation in the field.

YETI Frame Compatibility

This Gen3 hanger is compatible with all the following YETI models equipped with a 12x148mm Boost rear axle:

• SB (Super Bike) range: SB4.5, SB5, SB5+, SB5.5, SB6, SB100, SB115, SB130, SB140, SB150, SB165
• Carbon models: ASRC Carbon and ARC Carbon produced since 2015

Warning: this hanger is not compatible with YETI models equipped with the SRAM UDH (Universal Derailleur Hanger) standard such as recent ARC and 160E models, nor with older 12x142mm non-Boost frames (SB5-Carbon, SB6-Carbon 2015).

Why Always Have a Spare Hanger?

Derailleur hangers are the most impact-exposed components on an MTB: a simple fall on the drivetrain side, a poorly placed rock or a branch caught in the derailleur can bend or break the hanger in a fraction of a second. Without a spare hanger, you are forced to abandon your ride and walk back. Experienced riders always keep one or two in their backpack, just like inner tubes and multi-tools. It is an essential safety accessory to never get stuck in the wilderness.

Installation and Maintenance

Installing this derailleur hanger is simple and quick. Simply remove the rear derailleur, remove the old hanger, position the new one ensuring proper alignment of the mounting holes with the frame, then tighten everything with the supplied bolt. Regular alignment checks (with a hanger alignment tool or visually) ensure shifting precision. In case of impact, even minor, it is recommended to check the hanger's condition and replace it if it shows any deformation, even minimal.