MTB Frames

Q: How is an MTB Frame constructed?

Head Tube Usually Tapered (conical) to accommodate modern, stiff forks. The head angle determines handling: Steep = agile (Dirt), Slack = stable at high speed (Enduro/Freeride). Rear Triangle & Dropouts On dirt frames often horizontal (for singlespeed chain tension). On Enduro/Freeride frames usually designed for thru-axles (148x12mm Boost) and derailleurs. Bottom Bracket Often threaded (BSA/Euro BB) for easy maintenance and creak-free performance.

Q: What materials are used?

Chromoly Steel (4130 CrMo) The classic in the Dirt/Street sector. Slightly heavier, but extremely robust and lively. Ideal for street and pump tracks. Aluminum (6061-T6) Lighter and stiffer. Standard for race bikes and almost all full-suspension frames (Enduro/Slopestyle), as complex shapes for shock mounts can be realized here.

MTB Frames FAQ

What is an MTB Dirt/Slopestyle Frame?

The frame is the centerpiece. Unlike classic trail bikes, these frames are more compact, stronger, and more agile. They are built to withstand jumps, tricks, and hard landings. A rough distinction is made between Hardtails (front suspension only) and Full Suspension (rear shock).

How is an MTB Frame constructed?

Head Tube: Usually Tapered (conical) to accommodate modern, stiff forks. The head angle determines handling: Steep = agile (Dirt), Slack = stable at high speed (Enduro/Freeride).
Rear Triangle & Dropouts: On dirt frames often horizontal (for singlespeed chain tension). On Enduro/Freeride frames usually designed for thru-axles (148x12mm Boost) and derailleurs.
Bottom Bracket: Often threaded (BSA/Euro BB) for easy maintenance and creak-free performance.

What materials are used?

Chromoly Steel (4130 CrMo): The classic in the Dirt/Street sector. Slightly heavier, but extremely robust and lively. Ideal for street and pump tracks.
Aluminum (6061-T6): Lighter and stiffer. Standard for race bikes and almost all full-suspension frames (Enduro/Slopestyle), as complex shapes for shock mounts can be realized here.

What do the specifications mean?

Term	Explanation	Examples / Available
Travel	How much movement the rear frame offers.	100mm (Slopestyle) to 200mm (Freeride)
Top Tube & Reach	Determines how stretched you stand. Reach is the modern measure (bottom bracket to head tube horizontal).	Reach: 460mm - 500mm
Hub Spacing	Width of the rear hub.	135x10mm (Dirt Standard), 148x12mm (Boost Standard)
Seat Angle	Important for Enduro: The steeper (e.g. 78 deg), the better you pedal uphill.	77 - 79 deg (Climb friendly)