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RitcheyWCS One-Bolt Carbon Clamp Kit


Item # RIT0098

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  • Fizik Carbon/Black, 7x9.6mm ($17.95)
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Item # RIT0098

WCS One-Bolt Carbon Clamp Kit

Ritchey makes some of the sweetest components on the market. And their WCS series is no stranger to a clean finish line, as evidenced by Cadel Evans standing atop the podium at the 2009 World's road race after riding his Ritchey equipped Canyon to a convincing win.

One issue we've had with Ritchey seatposts has to do with the one bolt clamp and it's compatibility with ovalized carbon fiber seat rails. Ritchey now offers the WCS Carbon 1-Bolt Clamp Kit. The kit consists of two replacement clamp brackets that are contoured to perfectly fit the latest carbon railed saddles -- the ones that have an ovalized rail shape. Now you can use your favorite Fizik saddle and ride in comfort and with the security of knowing that the clamp is perfectly matched to the saddle rails for a slip and squeak free connection.

The Ritchey WCS Carbon 1-Bolt Clamp Kit will work on their WCS Carbon 1-Bolt Seatpost and comes in two versions -- one for 7 x 9.6mm Fizik carbon railed saddles and another for saddles with 8 x 8.5mm carbon rails.

Tech Specs
Diameter7 mm, 8.5 mm, 9.6 mm
Recommended Usecycling

Actual Weight

Fizik Carbon/Black, 7x9.6mm

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

What do you think about this product?



I have a syncros Duncan seatpost and the clamps look exactly like this. Will these adapters fit my bike?


I have a Fizik Aliante R1 saddle with the carbon rail, what size do I need


Hi, I'm using a Specialized Romin Evo Pro saddle and was wondering which clamp kit I need for the oversized 7x9mm carbon rail used on the Romin saddle. Do I need the 8.5mm or 9.6mm Thanks!

Unfortunately Specialized does not advise to use either of those options. You need a 7x9mm clamp to fit those carbon rails properly- most likely you'll need a new seatpost.

Well, it would be for the seat stubby that comes with the Wilier cento1 SR INTEGRATED post you guys sell. I really don't want to change saddles since this works the best of all I have used in the past. The specialized took care of issues I had.