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Sunlite TCO Piston 2 Bolt-Clamp Quill Stem

Sunlite TCO Piston 2 Bolt-Clamp Quill Stem
  • Color: Black
  • Color: Silver
Clamp Diameter: 25.4mm
Steerer Diameter: 1-inch
Length: 40mm
Rise: 40°
Please select options Unavailable


• Forged aluminum
• 2-bolt clamp
• 250mm tall (extra tall)

Stem angle is one of the factors that determines handlebar height. A listed angle of 0 degrees actually provides a rise of 16-20 degrees, depending on the bike's head-tube angle. Flexible, athletic riders prefer lower-rise stems, while recreational riders usually favor higher-rise stems.

Stem length is measured along the side of the stem from the center of the steerer to the center of the handlebar clamp (see diagram). Keep in mind that as a stem provides more rise, its effective length decreases. In the example above, if the +17-degree stem measures 135 mm, it actually extends 108 mm parallel to the ground.

Part Numbers

Option UPC MPN Store SKU
25.4mm / Black / 40mm / 40° / 1-inch 072774583379 58337 58337
25.4mm / Silver / 40mm / 40° / 1-inch 072774583362 58336 58336