Frame & Suspension
What is a Frame?
The skeleton every other part of the bike bolts onto.
Simplified schematic — not to scale.
In plain English
The frame is the main structure of the bike — usually a triangle shape in steel, aluminium, carbon fibre or titanium — that everything else attaches to.
A simple analogy
“It's the bike's skeleton: everything else is muscle, organs, or clothing bolted on top.”
How it works
Tubes are joined (welded, bonded or brazed) into a shape strong enough to resist your pedalling force, bumps and body weight, while staying as light as the material allows.
Signs of trouble
- ⚠Visible cracks, especially near welds or joints
- ⚠Paint bubbling or rust on steel frames
- ⚠Creaking noise that moves when you press near a joint
Rough UK cost
£150 – £2,000+ to replace, material dependent
Always get a written quote. Prices vary by bike, region and parts brand.
Heads up: Bikeautonomy is for general guidance only. If your bike is behaving oddly or you're not confident, get it looked at by a qualified bike mechanic.