The burgtec dm mount stem has been pointing the worlds best riders downhill such as the santa cruz syndicate team for long time now for the last 5 years burgtec direct mount stems have chalked up an impressive number of world cup podiums and has even been on the top step of the world champs 2 years on the bouncespecificationavailable in 40mm and 50mm reachfits boxxers fox 40 dvo manitou marzocchi any other forks that use is mount clamp diameter 318weight 130g 40mm reach 140g 50mm reachcom