Zipp Service Course SL Seat Post (27.2) (20mm Setback) (Polished Black)

Discontinued Online
This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.

This is a Zipp Service Course SL Seat Post. Better fit means better performance. If your saddle is out of position, youíll waste energy with every pedal stroke. That was our foremost consideration in creating the Service Course SL seatpost.  The secure, low-profile clamp allows the saddle to slide farther back along the rails, and with 0 mm and 20 mm setback options, itís possible for nearly any rider to achieve the perfect fit. This unique clamp design also features downward-facing bolt heads that allow micro-adjustment of the saddle even after it is mounted.

For high strength, low weight, and efficient use of every gram, the shaft and head are not bonded but are 3D-forged from a single piece of 7075 aluminum. To further reduce weight, the 220 g (275 x 27.2) 0 mm setback Service Course SL seatpost uses titanium bolts and more intricate machining than the regular Service Course seatpost. The Service Course SL Seatpost is available in 330 mm length for the 0 mm setback option and 275 mm and 350 mm lengths for the 20 mm setback seatpost as well as 27.2 and 31.6 mm diameters.

Note: torque for the seat railes is 7Nm.

Every piece in the Service Course SL line is available in the standard gloss black with white logos, as well as a new Beyond Black color scheme with laser-etched black logos for a stealthy look.


  • 3D forged from a single piece of AL-7050
  • Machined internal shaft to reduce weight
  • Dual bolt, low profile micro adjust cradle
  • Titanium hardware

Color: 2-Tone Polished Black
Length: 330mm
Material: Aluminum
Offset: 20mm
Diameter: 27.2mm
SeatpostType: Rigid
Clamp Style: Standard Rails
Weight: 220g
Weight limit: 300lbs
Torque for saddle rails: 7.0Nm
Minimum insertion length: 90mm


This product was added to our catalog on May 21, 2015.