Zeta Saddles
Ultima 165mm Bike Saddle
Ultima 165mm Bike Saddle
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Maximum Comfort for Upright Riding Positions
ULTIMA is engineered for riders who prioritize comfort without sacrificing performance. Featuring an enhanced volume of ZETA's patented Reactive Padding™ and a 3 models 145mm, 155mm and 165mm platform, Ultima delivers exceptional protection for sit bones and soft tissue—perfect for upright riding positions, long-distance touring, and riders who need extra support.
Why Riders Choose Ultima
- Enhanced Reactive Padding™ Volume – Maximum protection for sit bones, soft tissue, and the sensitive perineal region without the bulk of traditional comfort saddles
- 165mm Width – Wider platform distributes pressure across a larger surface area, ideal for upright positions and riders with wider sit bones
- Surprisingly Lightweight – At 340 grams, Ultima is significantly lighter than comparable comfort saddles while delivering superior cushioning
- Versatile Performance – Excels on commuter bikes, e-bikes, touring setups, mountain bikes with upright positions, spin bikes, and recreational road riding
Comfort Without Compromise
Traditional comfort saddles achieve cushioning through excessive padding—which compresses over time, creates friction, and adds unnecessary weight. Ultima's Reactive Padding™ technology provides dynamic shock absorption that actually responds to your body's movement, maintaining consistent comfort mile after mile without the drawbacks of conventional gel or foam padding.
Who This Saddle Is For
Ultima is built for riders in more upright positions: commuters, recreational cyclists, mountain bikers on trail and all-mountain bikes, gravel riders, touring enthusiasts, spin class regulars, and anyone who's struggled to find a truly comfortable saddle. If you've tried "comfort" saddles that felt bulky, heavy, or still caused discomfort after an hour, Ultima's physician-designed padding system will change your riding experience.
Technical Specifications
- Width: 165mm
- Weight: 340 grams
- Materials: High-quality nylon composite shell with steel rails
- Designed and engineered in the USA
Find your perfect fit: Download our sit bone measurement guide to confirm 165mm is your ideal width.
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Find Your Perfect Fit
Measure sit bone width and add 30 to 40mm then choose the closest width.
For more sizing information go to the CORRECT SIZING page.
Let customers speak for us
from 109 reviewsVery comfortable saddle... Couldn't sit on the one I had it hurt too much. As good as a shaped piece of wood wrapped in leather.
The Optima is just the opposite I don't even think about it. Now I enjoy the rides and absolutely recommend the Zeta Optima.
I have been a life long cyclist. I have a box full of seats in my garage. None of them are comfortable. I tried the Zeta on a whim and immediately fell in love with it. I mounted it on my Pinarello X7. It is a marriage made in heaven. I will be ordering another for my second bike. Marc F.
I have bought 5 Zeta Saddles...one for all my bikes and a spare. I can ride 4 hours with no pain with the Zeta saddles...Excellent product
Awesome seat! I like this seat so much I purchased 1 for each of my 4 road bikes.
I have gone through multiple saddles looking for one that didn't make my sits bones ache and my crotch go numb after 30 minutes. I finally found it!. I was hesitant to try it after all the other disappointments but it paid off. Great product.
I have tried many many saddles. Zeta saddles finally get me pain free on my longest rides. I have three of their saddles, one fir each of my bikes.
I had the same saddle for years as it fell apart because I couldn't find a comfortable fit. I now have an amazing saddle. In fact i have two. Thank you.
I replaced my Trek saddle with my new favorite - Optima TI 155mm saddle. I’ve only put about 100 miles on it so far, but am very pleased. I am able to stay in the saddle longer with no discomfort. I love the saddle, just wish I had made the change earlier!
Have given both seats a good workout up here in the snow and am pleased to say they’re both keepers. Not sure what is different about them other than that I hardly notice them at all. One improvement though, would be to make a version without a see-through relief hole. Mud season is now upon us trail bikers in the worst sort of way.
The Zeta saddle is the best saddle out there.
This saddle just disappears under you.
I have 4 bikes and every one has a Zeta saddle on it.
The saddle is comfortable, eliminates numbness, and I don’t have to keep repositioning myself on the seat…it stays put. I have bike seat on my road bike which also works as my indoor bike trainer on my Zwift Hub, and works great.
So great, I am going to order one for my e-bike!
I have the Ultima 165mm Bike Saddle on all of my bikes. Two years ago I was getting desperate to find the comfort I'd lost as my bottom got skinnier. The Ultima 165mm Bike Saddle saved the day! Patrick sent a note with my latest purchse promising some swag in the future - would love to represent Zeta to my cyling friends with a ncie hat!!
I am completely satisfied with the Optima S bicycle saddle from Zeta. All three of my bikes are equipped with this model.
It’s got comfort and support in all the right places.
This is the third Zeta saddle I have ordered. I am putting them on all my bikes. These saddles have alleviated sit bone pain and eliminated skin chaffing.
I have tried several saddles but have found the Zeta saddles are the most comfortable especially on longer distance rides. The padding system they developed really works. My wife and I have been replacing our other saddles with Zetas on all our bicycles..