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Fi'zi:k Antares R3 K:ium Saddle

up to 30% Off
sale $121.99 Original price:$175.00

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  • Black/Black, Regular
    sale $121.99
  • Black/Black, Large
    sale $121.99

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Antares R3 K:ium Saddle

Designed with a relatively flat shape, the Fizik Antares R3 Saddle with Kium rails is ideal for cyclists who mix up their riding positions, especially on extended tours and grueling climbs. If you know you fall into Fizik's Chameleon category, which refers to riders with medium spine flexibility, consider the Antares R3. It'll keep you pedaling in comfort towards PR's and new goals while representing a significant upgrade over the stock saddle you've been riding for the past couple of years.

As you head out on after-work sunset rides, the Antares' fiberglass-reinforced nylon shell will flex at the point where your thighs meet the saddle, while retaining stiffness throughout the rest of the shell. This design, aptly named WingFlex, limits discomfort without compromising power transfer when you're pedaling hard into a gusty straightaway. The intuitive shell sits atop Fizik's proprietary K:ium rails, created from a titanium alloy that both reduces weight over solid titanium alone and increases stiffness. More affordable than carbon, K:ium boasts a significantly better strength-to-weight ratio than aluminum alloys.

  • Upgrade your stock saddle for this light, versatile model
  • Made for Chameleon riders within Fizik's Concept Fit system
  • K:ium rails boast an impressive strength-to-weight ratio
  • WingFlex shell maintains responsive power transfer
  • Thigh glides prevent mid-climb hangups
  • Easy-to-clean Microtex cover protects saddle's internals
  • Item #FIZ005J

fiberglass-reinforced nylon WingFlex
Seat Length
274 mm
Seat Width
140 mm
Claimed Weight
7.1oz (200g)
Recommended Use
road cycling
Manufacturer Warranty
2 years

Tech Specs

What do you think about this product?


>Rating: 5

A saddle that exceeds expectations

I've used it several times
True to size
Size Bought
5` 10"
165 lbs

After purchasing many saddles, I feel lucky that I picked this Antares R3. The quality and fit of this saddle is perfect, I’ve ridden with it 4 times and it’s just amazing how comfortable it is. The Fizik website really helped me in selecting the right saddle. Go there, you won’t be disappointed.

>Rating: 5

At last comfort

I've put it through the wringer
True to size
5` 11"
180 lbs

In my three years of cycling, I have tried about 10 different saddles and I was beginning to think I wouldn't ever be comfortable and I would just have to learn to deal with the soreness, but lo and behold I tried this saddle and it solved my problem. This saddle is comfortable enough whereby I don't even think about my seat when riding anymore. Thank you FIZIK. I'm back on this site to order the same saddle for my other bike as I went on Ebay and thought I was buying the same saddle and it was a knockoff of some sort. Just like a mattress, we spend a lot of time on it and sometimes we hesitate to buy the best; this is one of those instances- FIZIK has some good anatomical saddles.