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ST Core Evo Saddle

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Ergon’s original ST Core Series revolutionized saddle design, ergonomics and comfort.
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ST Core Evo Men's Saddle

  • Prevents numbness
  • 3D movement and dampening
  • Completely new driving experience
Ergon’s original ST Core Series revolutionized saddle design, ergonomics and comfort. The new EVO version elevates this ingenious concept to its most elegant and effective adaptation and is fine-tuned for the highest demands of touring cyclists. Because of its Ergonomic Core and TwinShell construction, pressure, soreness and pain are a thing of the past – even on the longest tours. Hot spots, back strain, shock and vibrations from the road or trail surface are completely absorbed and the pelvis is actively supported when pedaling. Ergon ST Core Evo Men is a saddle that you won’t even notice is there! 
Size:  S/M and M/L

Technical Specifications

Name:  ST Core Evo Men
Use:  Touring, E-Touring
Size:  S/M M/L
Color:  black 
Core:  BASF Infinergy® (E-TPU / Closed Cell Particle Foam) 
Shell:  Nylon Composite 
Rail:  CroMo 
Cover:  Microfiber 
Padding:  Orthopedic Comfort Foam 
Gender:  men specific 



The floating ergonomic saddle core

When you pedal, your weight is shifted alternately to the left and right sit bones, placing added stresses to one side and then the other. This pressure is noticeably reduced by the Ergon Core material with its incredible rebound properties. As you pedal, the saddle rebounds to not only the weight shifting of your pelvis, but also vibrations from the surfaces beneath your tires. This creates a floating feeling with each pedal stroke resulting in maximum comfort.


Cycling on clouds

BASF’s innovative Infinergy® material sets new standards for suspension and damping on bicycles. The elastic saddle core supports pelvic movements when pedaling, absorbs road shocks and alleviates unwanted pressures on the back. When the pedaling pressure decreases, the Ergon Core, consisting of thousands of foam particles, immediately rebounds back to its original shape. Leading manufacturers of running shoes also use this E-TPU foam worldwide with great success.


Ergon TwinShell vs. standard saddle

The revolutionary Ergon double-shell technology takes comfort to a whole new level. With the conventional saddle there is only one seat shell on the frame. This standard shell supports all of the rider’s weight and must therefore be very stiff. The Ergon ST Core Evo Women utilizes two shells. The lower shell, supporting the rider’s weight is very stiff and the upper shell, which is a base of the padding material is very flexible. In between is the floating ergonomic core made of Infinergy®. This design isolates road shock, dampens vibrations, supports pelvic movements while pedaling and noticeably takes pressure off the sit bones.


Support that follows your pedal stroke

The view from below on the ST Core Evo Women shows how the high-performance elastomer damper decouples the two saddle shells from each other. This sandwich construction with its elastic core allows the saddle to follow the natural movements of the pedal stroke. This provides support in all directions from the vibrations of the riding surface to the rider’s pedal stroke.


Comfortable and durable

The padding is made of orthopedic comfort foam. The foam is supportive, soft, but does not collapse. In addition to the foam, specific gel pad inlays offer even more comfort under the sitting area. With this saddle, it is not absolutely necessary to wear cycling shorts. The saddle is covered with robust microfiber to prevent abrasions and maintain the durability of the saddle.

Ergon ST Core Prime-Sattel mit orthopädischem Schaum.


Minimizing saddle discomfort

When cycling, most of your body weight rests on the small saddle surface. If the weight is not shifted evenly to the bony structures, unnecessary pressures are then distributed to sensitive soft tissue areas. A relief channel helps, but is not the only important factor.

For an ergonomic distribution of pressure, the correlations between the sit bone distance and sitting angle must be taken into account. An ergonomic bicycle saddle should have sufficient contact surface, but still allow the thighs to move freely. Furthermore, cycling is not static. Uphill, the rider intuitively slides towards the saddle nose to shift the body’s center of gravity forwards. The opposite occurs when cycling downhill.

Ergon takes all these factors into account when developing all of their saddles. Two widths are available in every saddle model to better adapt to all rider’s comfort needs.

Specific saddles for men and women

When it comes to saddle contact points and relief areas, men and women are anatomically very different. Any incorrect pressure distribution in this area often leads to repercussions of numbness and discomfort. Men experience this more towards the back of the saddle and women, more towards the front of the saddle. Through extensive research and development, two distinctly different designs were born. The two designs share the common goal of maximum comfort.

Tested back-friendly

Back pain is the most commonly occurring orthopedic condition, especially when cycling. When you have back pain on the bike, your ride enjoyment quickly dissipates. In extensive tests led by medical professionals, the Core saddle principle has been officially confirmed to reduce back pain.

ST Core Evo – certified and recommended by AGR

The right size

The shape and size of the saddle must match the sit bone width of the rider to maximize comfort and enjoyment. The pelvic bone has a unique V-shape and the saddle must offer the sit bones a large contact surface with the ability to meet the demand of different sitting positions. Various saddle widths are offered so that the usable seat surface corresponds to the riders unique sit bone distance. The more forward and aggressive the rider sits, the further forward the sit bones contact the saddle.

Sizes between Small / Medium 9-12 cm and Medium / Large 12-16 cm



Brand Ergon


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