A few clarifications and additions:
- Compatibility: These levers are commonly made for:
- V-brakes (linear-pull brakes)
- Mechanical disc brakes
- Cantilever brakes
They are generally not suitable for hydraulic brake systems.
- Lever size:
- 2-finger and 3-finger designs are common.
- Shorter levers can improve control for smaller hands.
- Materials:
- Budget models may use:
- plastic lever + plastic body
- plastic lever with steel pivot hardware
- alloy lever with PVC/rubber coating
- Fully plastic versions are the least durable.
Your pros and cons are well summarized. Two additional points:
Additional Benefits
- Corrosion resistance: Plastic bodies do not rust.
- Affordable spares: Easy to replace without worrying about matching premium components.
Additional Drawbacks
- Pivot wear: Cheap plastic pivots can develop play quickly.
- Lower braking precision: Under aggressive braking, flex can reduce modulation and responsiveness.
For riding use cases:
Good Uses
- Children’s bicycles
- Casual commuting
- Entry-level recreational MTB riding
- Spare/temporary replacement bikes
Not Ideal For
- Downhill riding
- Technical trail riding
- Heavy riders carrying loads
- E-bikes with higher braking demands
If someone rides regularly on rough trails, aluminum alloy brake levers are usually a much better long-term choice because they offer:
- better stiffness,
- improved braking feel,
- higher crash resistance,
- and longer service life.