Reverse Components "Black-One D-2" MTB Direct Mount Stem
- Weight : 0.16kg / 0.35lbs
- Packaging Unit: 1 Piece
- Product ID (PID): 33144
- Product safety
Weight
The heaviness of a BMX part, measured by weighing. It's worth noting that weight specifications for BMX parts can vary and may not always be precise. Several factors contribute to this:Manufacturer's weight specifications may be inaccurate or incomplete.The weight of two identical parts can also differ.We cannot weigh every individual part.For example, if there are handlebars in different heights, the manufacturer usually provides just one weight specification for all heights. When weighing two identical tires, you might get two different results.
Source: BMX Glossary
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Online: https://www.kunstform.org/en/reverse-components-black-one-d-2-mtb-direct-mount-stem-p-33144
Printed: 10/28/2026
Printed: 10/28/2026
The Reverse Components "Black-One D-2" MTB Direct Mount Stem bolts straight onto the fork crown instead of clamping around the steerer. That makes a short, stiff connection between bar and fork, which is what downhill asks for. The reducer sleeve in the box turns the Ø35mm clamp into one for Ø31.8mm bars, so you are not tied to one bar diameter. In the lower section the clamp runs without a gap, so the force is spread evenly across the contact area. That is exactly what carbon bars need.
Facts: Reverse Components "Black-One D-2" MTB Direct Mount Stem
- Style: Direct Mount
- Material: 6061 Aluminum
- Manufacturing Method: 100% CNC machined
- Reach: 45mm
- Rise: 21mm
- Bar Clamp ⌀: 31.8mm or 35mm
- Bolts: 4 bolts for the fork crown, 25 g in total
- Scope of Delivery: 1 stem with reducer sleeve, 4 bolts for the fork crown
- Extras:
- fits Ø31.8mm and Ø35.0mm handlebars
- gapless clamping in the lower section
- E-Safety Level category 5, tested in the EFBE EPAC MTB-GR Tri-Test
