Home > Bike Types > Gravel Bikes

Revised Zipp Service Course SL seatpost shakes off vibrations + updated dropbars

8 Comments
Support us! Bikerumor may earn a small commission from affiliate links in this article. Learn More

Zipp is launching a new lightweight carbon version of their Service Course SL seatpost, setting the bar high for improved rider comfort. Re-engineered specifically to introduce some flex, the new seatpost reduces those spine-shaking vibrations transferred from the road to the rider. As the lines between road cycling and gravel riding become increasingly blurred, this seat post sits comfortably in between the disciplines, ticking all the boxes.

In an attempt to remove the infamous difficulties associated with fine seat adjustment, a two-bolt clamp is used, and the head has been redesigned for increased bolt head accessibility. Zipp claims it is possible for almost any rider to achieve the perfect fit thanks to 0mm and 20mm setback options.

The Service Course SL Seatpost is available in a 0mm and 20mm setback position

It’s available in a 400mm length with three diameters (25.4, 27.2, and 31.6mm), and the clamp is compatible with almost all saddle rails. Weighing in at 240 grams for the 0mm setback, the carbon post is just 5 grams lighter than its 6061 aluminium predecessor, despite being 3x the price. Every gram counts, right?

The unidirectional carbon post is 400mm long with minimum insertion length of 100mm
The unidirectional carbon post is 400mm long with minimum insertion length of 100mm

Also receiving a makeover are Zipp’s Service Course drop handlebars, with the launch of the new 7050 aluminum Service Course SL-70 and Service Course SL-70 Ergo, and the 6061 aluminum Service Course 70 Ergo handlebars. A new feature is the variable radius drop, allowing the rider the opportunity to ride with multiple hand positions. Whether you prefer to ride low on the drops or reach in, the Service Course SL-70 should have you covered. You’ll also find improved wrist comfort with the Ergo bars, with the addition of a 3-degree backsweep. The Ergo bars are also now clip-on compatible in 40cm and plus sizes.

The Service Course SL-70 Ergo is available in 4 sizes: 38, 40, 42, 44cm, with 40+ clip-on compatible
A 3-degree backsweep improves wrist comfort

The new SL-70 range follows the launch of the new SL-80 Ergo bars at the Sea Otter Classic earlier this year.

7050 aluminum Service Course SL-80 Ergo bars weighing in at 275g
7° ramp angle for a flat transition to the hoods and a 4° outsweep at the drops

Zipp.com

Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

8 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
Eli
Eli
5 years ago

I see lots of people selling zip seatposts but no one reviewing it and comparing to other seatposts for comfort. If you want to claim your seatpost adds to comfort that seems useful and easy to demonstrate

Doug
Doug
5 years ago

Thomson masterpiece weighs 40+ grams lighter and is made one the USA and its lower priced.

Richard
Richard
5 years ago
Reply to  Doug

Loving my Thomson masterpiece…

lop
lop
5 years ago
Reply to  Doug

And is incredibly rigid while not providing any useful setback, which is the opposite of what Zipp is selling.

Greg
Greg
5 years ago

Confusing. This post is aluminum, right? Service Course parts are aluminum. Pic caption says otherwise.

Adrian
Adrian
5 years ago
Reply to  Greg

it’s carbon

TheKaiser
TheKaiser
5 years ago

So just how much flex does this carbon post add? If they built it for that purpose, this info is surprisingly short on details or quantification. When Portner was at Zipp he did all sorts of sciency stuff on seatpost comfort effects, I am hoping that they are still doing that and aren’t just relying on the marketing department now.

How does it compare to other flexy comfort post benchmarks the Syntace Hi-Flex, Cannondale SAVE, Specialized etc…? How does it compare to the previous Zipp models both in vibration attenuation, and in actual deflection under normal rider/bump loads?

Pete
Pete
5 years ago

I have just bought the older aluminum version of Zipp sl SC seatpost. It weights 215g (zero seatback), so it’s lighter than this

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.