SE Bikes 55- mm Threadless Bicycle Stems
About SE Bikes - "In 1977, SE Racing was born with the goal of producing innovative BMX bikes for riders everywhere. Soon after, SE produced the first race ready high-end aluminum race bike, the JU-6, featuring stiff Floval tubing. This groundbreaking bike was further modified and became the legendary PK Ripper."
Stem length is measured from the center of one clamp to the center of the other clamp. This measurement is sometimes known as the reach or extension.
"In 1977, SE Racing was born with the goal of producing innovative BMX bikes for riders everywhere. Soon after, SE produced the first race ready high-end aluminum race bike, the JU-6, featuring stiff Floval tubing. This groundbreaking bike was further modified and became the legendary PK Ripper."
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Stem angles are measured perpendicular to the clamp. For example, a 90 degree stem is straight. Sometimes, this may also be refered to as a 0 degree stem. If two measurements are listed, the stem can be flipped for angling up or down.