The Protaper Atac Stealth stem is the perfect combination of lightness and strength to meet the challenges of mountain biking.
The Protaper 40 mm 31.8 Stealth stem is forged and machined from 6061 aluminum to obtain the best weight/stiffness ratio to withstand every conceivable stress. Screws and bolts are made of A2 stainless steel.
| Brand | Protaper |
| Supplier reference | 306-37221-A140 |
| Color | black/black |
| Color | Black |