Wheels Manufacturing Dropout 25

Wheels Manufacturing Dropout 25 is a direct-replacement derailleur hanger engineered for Kona frames that use the #25 dropout. CNC machined from 6061-T6 aluminum, this hanger delivers a consistent, lightweight platform that restores alignment and keeps your drivetrain shifting cleanly.

Black anodized for corrosion resistance and a durable finish, the Dropout 25 ships with (1) M8 chainring bolt included for straightforward installation. The precision machining and tight tolerances reduce slop between the frame and derailleur to improve indexing and reduce wear on drivetrain components.

Material and build: Machined from 6061-T6 aluminum for a balance of strength, weight savings, and predictable deformation in a crash. The black anodized surface increases abrasion and corrosion resistance while retaining a clean, low-profile look.

• Precision CNC machining ensures repeatable alignment and a snug fit against the frame.
• Included M8 chainring bolt simplifies installation — no extra hardware required.
• Compact shipping size and featherweight construction make it an easy spare to carry on rides.

The Dropout 25 is listed as Wheels Manufacturing hanger #25 and is tailored to fit Kona frames that accept that specific hanger shape. Before ordering, compare the silhouette of your current hanger or check your frame documentation to confirm it matches the #25 profile.

Installation is straightforward: remove the damaged hanger, align the Dropout 25 to the frame mounting boss, and fasten using the supplied M8 bolt. Tighten to your frame/derailleur manufacturer's torque specification — typical chainstay hanger bolts run around 6–8 Nm; always verify with the frame manual. If the hanger or threads are damaged, consult a professional mechanic to avoid compromising frame integrity.

Designed for mountain riders and mechanics who need an exact-fit replacement for Kona frames that use the Wheels Manufacturing #25 dropout. It's ideal for riders who want a lightweight, durable spare that restores derailleur alignment after impact or wear.

If you frequently ride rough trails, race, or maintain multiple Kona builds, the Dropout 25 is a high-value spare that helps you get back on the trail quickly with minimal fuss.

When choosing a derailleur hanger, the most important factor is an exact match to your frame's mounting geometry. Hangers are small but critical: the wrong silhouette or hole spacing will cause improper alignment and poor shifting. Always verify the hanger number (Wheels Manufacturing #25 for this product) or match the existing unit visually.

Consider carrying a spare hanger like the Dropout 25 on long rides if you frequently tackle rocky or technical terrain. Lightweight and compact, a spare hanger lets you make a quick replacement trail-side and get home without a long walk or costly shuttle.