From the manufacturer

One of the lightest stems available, tested and certified for heavy use (EFBE EPAC Gravity TRI-TEST® standard, category 5). This outstanding weight to strength ratio is achieved by CeraMAG, a ceramic coated magnesium alloy. CeraMAG is lighter and provides more vibration dampening than aluminum. Combined with titanium bolts, the CeraMAG Ti stems are extremely lightweight: just 93 grams for a 33mm long stem, 95 grams for 40mm, and 103 grams for the 50mm long version.

Because it is likely that you will want to combine this stem with an equally-impressive carbon bar, Leatt took care that the zero-gap faceplate and 210˚ handlebar wrap spread the clamping force evenly, reducing the risk of damaging the handlebar. The interlocking faceplate interface increases strength and makes installation easy. This CeraMAG Gravity stem has an extra-wide clamping platform for maximum control and steering precision. The integrated steerer tube seal cap prevents dirt and debris from contaminating and damaging the steerer tube.

Features

• CeraMAG - Ceramic coated magnesium alloy
• Very light structural metal
• High strength
• 100% recyclable
• Intensive CNC-machining minimizes weight and defines the distinctive Leatt aesthetic
• Ceramic coating for maximum wear-resistance and corrosion-resistance
• Titanium bolts to reduce weight
• Round head bolts help protect the knee
• The zero-gap faceplate and 210˚ handlebar wrap to spread the clamping force evenly, reducing the risk of damaging the handlebar
• Interlocking faceplate interface increases strength and makes installation easy
• Extra-wide clamping platform for maximum control and steering precision
• Steerer tube seal cap prevents dirt and debris from contaminating and damaging the steer tube
• Included: CeraMAG Ahead cap, Titanum cap bolt, 4 spacers (10, 5, 2,5 and 1,5mm heights) to finetune cockpit settings
• Tested to EFBE EPAC GRAVITY TRI-TEST® standard (category 5)
• Weight
  • 33mm - 93g
  • 40mm - 95g
  • 50mm - 103g