The DROPOUT-335 derailleur hanger from Wheels Manufacturing is a premium replacement part designed for BMC mountain bikes from the Fourstroke, Speedfox and Trailfox ranges. Precision machined in the United States from 6061-T6 aluminum, it replaces the original BMC reference #44 (Part #214986) while offering superior stiffness, increased durability and a refined aesthetic thanks to its black anodized finish.

Technical highlights

• Made in USA manufacturing: CNC machined in the Wheels Manufacturing workshop in Colorado, according to extremely strict tolerances to ensure perfect derailleur alignment and precise gear shifts.
• 6061-T6 aluminum: Aerospace-grade material offering an excellent stiffness-to-weight ratio, superior to original hangers often forged from lower-grade alloys.
• Enhanced stiffness: CNC manufacturing and material quality ensure increased stiffness compared to OEM hangers, reducing flex during gear changes and improving drivetrain responsiveness.
• Black anodized finish: Optimal protection against corrosion and wear, for maximum longevity even in extreme conditions (mud, moisture, impacts).
• Universal compatibility: Works with Shimano and SRAM rear derailleurs, offering total flexibility for your drivetrain configuration.

Precise compatibility

This DROPOUT-335 hanger is specifically designed for the following BMC models:

• Fourstroke FS01, FS02, FS03 29": 2014 model year and later
• Speedfox SF01, SF02, SF03: 2015 to 2017 model years
• Trailfox TF01, TF02, TF03 29": 2014 model year and later

It directly replaces the original BMC hanger reference #44 (part number 214986). Important: this hanger uses a standard mounting system and is not compatible with direct mount systems – for those, see reference D515.

Installation and maintenance

The hanger is supplied without hardware – use the original screws and nuts from your frame or order a compatible mounting kit. Installation is simple and quick, but we recommend checking the alignment with a dedicated tool (such as Park Tool DAG-2.2) after installation to ensure optimal gear shifting. If in doubt about compatibility, compare the shape of your current hanger with the product photos or contact us with clear photos of your hanger and the mounting point on the frame.

Wheels Manufacturing philosophy

Wheels Manufacturing stands as a global reference in aftermarket derailleur hanger manufacturing. Unlike mass-produced OEM hangers (often forged in Asia from low-grade alloys), Wheels MFG produces all of its hangers locally in Colorado, from premium aluminum billets machined by CNC. The result: parts that exceed original specifications in terms of stiffness, dimensional precision and finish. Ideal for demanding riders seeking maximum reliability and performance.