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Specifications

  • Material: 7075 Aluminum
  • Stiffness: 1.85 grams per Newton meter
  • Rise: +/-17 degrees
  • Clamp Diameter: 31.8mm
  • Lengths: 70mm, 80mm, 90mm
  • Faceplate: Four-bolt

FAQ

When should I choose +/-17 over +/-6 degrees?

Choose +/-17 when you need more bar height than the +/-6 version provides, either because your frame has limited stack, you are building an endurance-oriented cockpit, or your fit requires a more upright position without adding headset spacers.

Is this stem as stiff as the +/-6 version?

Yes. Both SL stems are machined from 7075 aluminum and meet the same 1.85g/Nm stiffness standard. The only difference is the rise angle.

Can I flip this stem for a negative rise?

Yes. Flipping the stem gives you a -17 degree drop for a more aggressive, lower bar position. This versatility makes the +/-17 a useful stem across a wide range of fit scenarios.

Best For

Endurance road cyclists and fit-focused riders who need SL-grade stiffness with an intermediate +/-17 degree rise to achieve proper bar height without spacer stacks.

Zipp Service Course SL Stem +/-17 Reviews:

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