RSX Direct Mount Bike Stem for 31.8mm Bar vs Aluminum MTB Stem 1-1/8" 31.8mm, 35mm length
Overall winner: RSX Direct Mount Bike Stem for 31.8mm Bar
Key Differences
FIFTY-FIFTY (A) is a very lightweight 132g CNC 6061T6 aluminum stem that fits a 1-1/8" steerer and 31.8mm bars with a fixed 35mm length; Funn (B) is a direct-mount stem for 31.8mm bars designed for dual-crown forks with adjustable extension (45–50mm) and emphasizes high rigidity while still being lightweight
RSX Direct Mount Bike Stem for 31.8mm Bar
RSX Direct Mount Stem for dual crown forks, CNC 6061 alloy for rigidity with light weight. Adjustable extension for versatile fit; noted for secure feel and easy installation
Pros
- Lightweight CNC 6061 alloy
- Direct mount for dual crown forks
- 31.8mm bar compatibility
- Adjustable extension
Cons
- Only 31.8mm version available
- Requires correct handlebar verification before purchase
- Designed for specific fork types
Aluminum MTB Stem 1-1/8" 31.8mm, 35mm length
6061T6 aluminum MTB stem, CNC machined for light weight and strength. Fits 1-1/8" steerers and 31.8mm bars. One customer notes easy installation and good value
Pros
- lightweight 132g
- full CNC machining
- compatible with 1-1/8" steerer and 31.8mm bars
- strong, well-made finish
Cons
- specific length only
- no alternative bar diameter options listed
Head-to-Head
| Criteria | Winner |
|---|---|
| Price | FIFTY-FIFTY |
| Durability | Funn |
| Versatility | Funn |
| User Reviews | Tie |