NOS Trek 4900 Mountain Bike Frame Only Aluminum Made In USA
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About this product
This is a NOS (New Old Stock) Trek 4900 mountain bike frame, constructed from aluminum and designed for full suspension (front & rear). It is a red frame with a flat handlebar type and is compatible with U-brakes. The frame is stated to be made in the USA and is intended for building a mountain bike. The wheel size is listed as 21, likely referring to a frame size or specific component detail.
Our take
If you're looking to build a retro mountain bike, this NOS Trek 4900 aluminum frame could be a great foundation. The aluminum construction offers a lightweight base, and the fact that it's designed for full suspension is a big plus for comfort on trails. Being made in the USA adds a nice touch of heritage. However, the U-brake compatibility means you're limited to older brake systems, and the listed '21' wheel size is unconventional; it might refer to a frame size rather than a standard wheel diameter, so confirm compatibility carefully. It's a frame only, so expect to source all other components.
Pros & Cons
Pros
- Lightweight aluminum construction
- Designed for full suspension
- Made in USA
- NOS condition
Cons
- U-brake type limits modern brake options
- Unconventional '21' wheel size needs clarification
- Frame only, requires full build
Specifications
- Brand Trek
- Handlebar Type Flat Bar
- Wheel Size 21
- Bike Type Mountain Bike
- Brake Type U-Brake
- Suspension Type Full Suspension (Front & Rear)
Show all 9 specifications
- Color
- Red
- Model
- trek 4900
- Material
- Aluminum
