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Free Gift: Sit Bone Measurement Pad
Free Gift: Sit Bone Measurement Pad

The width of every BiSaddle is adjustable. There are four bolts on the underside which can be loosened so the padding can be adjusted more wide or more narrow. After your custom fit width is found the bolts are tightened to keep the padding locked down at the desired width. This is similar to adjusting your seat post height. Once the bolts are tightened the saddle or seat post will stay locked in place.

Rails: CM and TI rails are 7mm x 7mm round and will fit all seat posts. Carbon oval rails are 7mm x 9mm and will only fit top clamp or oval specific seat post clamps. TI reduces weight by 20 grams compared to CM. Carbon reduces weight by an additional 20 grams compared to TI.

Relief Zone: A channel reduces some pressure in the middle of the saddle and provides more surface area for your sit bones to ride on. A cut out further reduces soft tissue pressure, but due to the reduction in saddle surface area the sit bone pressure may be a little higher.

$ 0.00

Patented in 2015, now with over 10,858 Happy BiSaddle Booties


We offer a 90 day no hassle money back guarantee. Simply ride your BiSaddle and if you are not able to get comfortable, then send it back within 90 days of your purchase date for a full refund. You are required to pay return shipping and the BiSaddle must not be damaged.

If you prefer to customize your saddle rails, padding, accent color and combo kit, then give the BiSaddle Builder a try.

Measuring Your Sit Bones

With this crayon and measurement pad, you can rest assured knowing your sit bones rest on the saddle right where they should. The process is simple, sit down on the pad, stand back up, and use quick strokes with the crayon over the pad. Voila! You can now see where your sit bones are aligned. 

  • Description  
  • Comparison Guide
  • Symptoms & Causes
  • Why BiSaddle
  • How It Works
  • Why Adjustable
  • Warranty


You can adjust BiSaddle to give you Custom Fit Comfort that will help you ride further, faster!


  • The patented BiSaddle Shapeshifter is the world’s only fully adjustable saddle.

  • The split-saddle design can change it’s width, angle and profile to fit your unique body shape, riding position and riding style.

  • The perfect BiSaddle shape eliminates pain, numbness, discomfort and genital injury!

  • The perfect BiSaddle shape eliminates pain, numbness, discomfort and genital injury!

BiSaddle Bike Saddle Comparison Guide




Saddle: SRT & EXT Stealth

Cycling discipline: Ultra and Gravel

Location: Texas, USA




Saddle: SRT

Cycling discipline: Ultra Triathlon 

Location: New Jersey, USA




Saddle: SRT

Cycling discipline: Triathlon 

Location: California, USA



LAWRENCE (Iron Cowboy)

Saddle: SRT

Cycling discipline: World Record Holder

Location: Utah, USA




Saddle: EXT Stealth

Cycling discipline: Triathlon 

Location: California, USA




Saddle: SRT

Cycling discipline: Triathlon 

Location: California, USA




Saddle: SRT & EXT Stealth

Cycling discipline: Triathlon

Location: Colorado, USA




Saddle: SRT

Cycling discipline: Triathlon 

Location: Madrid, Spain




Saddle: SRT

Cycling discipline: Triathlon 

Location: Washington, USA




Saddle: EXT Stealth

Cycling discipline: Triathlon Coach

Location: Thailand




Saddle: EXT Stealth

Cycling discipline: Triathlon Team USA 

Location: Massachusetts, USA




Saddle: SRT

Cycling discipline: Triathlon XTERRA 

Location: Massachusetts, USA




Saddle: SRT

Cycling discipline: Triathlon

Location: New York, USA




Saddle: EXT Stealth

Cycling discipline: Triathlon 

Location: Norway




Saddle: EXT Stealth

Cycling discipline: Triathlon 

Location: Utah, USA




Saddle: SRT

Cycling discipline: Author, Coach, Triathlon

Location: Switzerland




Saddle: EXT Stealth

Cycling discipline: Road TT

Location: California, USA



Mitchell "Spin Diesel"

Saddle: EXT Sprint

Cycling discipline: Road

Location: South Carolina, USA


“Usually the pain begins after 3 miles, and boy do I hate bumps of any kind!”

Pain can be experienced when body weight is supported by the soft tissue between your sit bones – primarily the labia (in women) and internal penis (in men).

“After 10-15 miles, I would develop numbness”

Bike saddles can cause men and women to put pressure on the perineum, which is the area located between the external genitals and the anus. This pressure causes arteries and nerves to compress, resulting in reduced blood flow and sensation to your genitals.

“I have tried an exhausting number of bicycle seats and haven’t found a comfortable saddle”

Saddle padding shouldn’t be excessively thick or soft. This causes the padding to squish down under the sit bones – and pushes up in the middle – adding pressure and discomfort where you don’t want it.

“I had trouble with numbness and saddle sores while in aero position” 

When you ride in the drops or in aero position your pelvis tilts forward (three degrees more for women then men), which can take pressure off the sit bones and can re-distribute it on soft tissue area causing sores and numbness.

“I was holding back on extra and long distance rides because I was worried about “ED” 

“There are only two kinds of male cyclists – those who are impotent and those who will be impotent.” – Dr. Irwin Goldstein

“I was miserable on my saddle and developed certain “female” issues” 

A recent article indicated that 30% of the professional female riders the author knew, required genital surgery from damage due to saddle pressure.

Main causes for your saddle pain

General Guidelines in Saddle Selection:

✓Comfort/upright body positions require saddles with more padding, more width and a flatter top to support your sit bones. See drawing (1). 

✓Performance body positions require saddles that are lightly padded, curved and narrower to support your pubic rami (2).

Bicycle saddles attempt to minimize pressure, resulting in all kinds of different padding types, profiles, curvatures and widths. Saddle manufacturers also consider the variation in sit bone widths, anatomical differences between men and women as well as body position and riding style. The result ...hundreds of saddles to choose from.

Is Your saddle too narrow, too soft, or not flat enough?

Sit Bone Width

Too Narrow = Pain

It takes a variety of saddle models to fit the different sit bone widths for men and women, which can vary from 100-150mm. The saddle should properly support your sit bones or your body weight is supported by the soft tissue.


Not Flat Enough = Pain

If the saddle has too much side to side curvature, then the high center is more likely to put pressure on the soft tissue. The saddle shape must also provide the right amount of curvature for movement of the hip and thigh. Saddle manufactures offer many shapes and curve options.


Too Soft = Pain  

The firmness of the saddle padding depends on how much you ride. The more you ride, the firmer the padding should be. Padding shouldn’t be excessively thick or soft as it can squish down under the sit bones, pushing up in the middle – adding pressure where you don’t want it.

Body Position

Upright to Aero  

Your body position helps determine your saddle width and shape. If you ride upright, your sit bones contact the saddle at wider points and you need a wider saddle. As you lean forward (aero), your pelvis tilts and narrows requiring a more narrow saddle.

Riding Style

Triathlon, Road, MTB?  

Since your saddle width and shape varies with your body position, you will likely need a different saddle for your road and mountain bikes. Saddle weight and rail strength is also a consideration for your riding style. That’s why you have so many rail and saddle weight options.

Saddle Up … And Stop Putting Your Comfort & Your Sexual Health at Risk!


Traditional bicycle saddles cause men and women to put pressure on the perineum, which is the area located between the external genitals and the anus.

In men, there is a sheath in the perineum that contains an artery and a nerve that are responsible for providing the penis with blood and sensation.

Sitting on a traditional bicycle saddle causes this sheath to compress, resulting in reduced blood flow and sensation to the penis.

Women have the same arteries and nerves which run to the clitoris and over time they can experience the same compression and the same reduced blood flow and sensation to their genitals.


The Bisaddle has been uniquely designed to eliminate the problems caused by traditional saddles. Here’s what we’ve done: We’ve split the saddle surface into two halves and made them fully adjustable so that the discomfort commonly associated with cycling can be completely eliminated.

It’s Time to Say Goodbye to Pain & Numbness!

This new innovative design not only looks stylish, but its surface contours and adjustability features ensure a perfect, custom fit for both menand women.

That’s right, we took into consideration that the angle of the bones at the bottom of the pelvic girdle vary between 50° and 60° for men and between 80° and 85° for women.

We also understand that many of us are asymmetrical. To address these issues and ensure a perfect, custom fit for you we’ve made the BiSaddle individually adjustable both in the front and back of each half of the seat.

What makes BiSaddle so different from everything else on the market?

The short answer is: BiSaddle was designed through study of anatomy to solve major health problems, not by a marketing team.

What this means is that BiSaddle was designed with your health in mind first and performance second. You’ll FINALLY be able to ride with absolutely NO pressure on your soft tissue perineum.

Riding is one thing, but riding with peace of mind is a totally different thing.

And once you say yes to BiSaddle, you’ll finally be able to ride and sit on your saddle for an hour, two hours, or however many hours you want WITHOUT worrying if you’re causing any long or short-term damage to your body and overall health. 

The saddle is designed to support riders like YOU only on the bottom of your pelvic girdle (the Sit Bones) and not put pressure on any soft tissue (perineum).

Here’s how it works:

  • The saddle consists of two individually adjustable surfaces that have two points of adjustment each (front and back, meaning there’s LOTS of adjustability)

  • These surfaces are contoured to fit the curvature of the bottom bones of your pelvic girdle (Ischiopubic rami and Ischial Tuberosities to be exact.)

  • These surfaces are mounted on a frame that allows the surfaces to be positioned to allow for both separation and angular variations.

  • This design addresses erectile dysfunction in men by allowing for up to 3/4 inch of separation of the surfaces in the front, which is where the dorsal artery passes under the pubic symphasis (bottom of the V) and into the genitals

  • By only supporting riders on the bones at the bottom of the pelvic girdle, it also eliminates pressure on the perineum.

As you probably already know, the perineum is where the prostate is for men is located and where all of women’s genitalia reside.

But here’s what’s really great about BiSaddle…

You won’t experience numbness in your genitals & NO pressure on your testicles either….

The BiSaddle is the ONLY saddle where both the front and rear of the saddle can be adjusted independently….

This allows for adaptation to almost every body type that exists.

  • The angle of the bones at the bottom of your pelvic girdle vary between 50-60° for men and between 80-90° for women.

  • Our pelvic bones are often asymmetrical. One side may be slightly different than the other

  • Small changes in surface positioning can make significant difference in comfort.

  • BiSaddle does not put pressure on any perineal tissue.

The design also eliminates the pressure that the standard saddle horn puts on nerves, arteries and veins that run along the sides of the ischiopubic rami (legs of the V).

The adjustability of the surfaces was initially thought to allow riders to position the surfaces directly underneath their unique pelvic architecture.

Subsequent experience has shown that positioning of the surfaces must also take into account individual variations in where nerves, veins and arteries exist.

The latest version of the BiSaddle includes optional height shims for the surfaces to accommodate potential pelvic variations.

When you compare the fact that with traditional saddles, which come with a long-term consequence of pressure on your nerves and blood vessels in your groin area, which could cause impotence in males, the BiSaddle is hands down the absolute best choice on the market today!

BiSaddle is backed by a guarantee

We’re so sure that you’ll be absolutely amazed at the difference the BiSaddle provides you with that we’re taking all of the risk away from you and placing it on ourselves by handing you a 90-day guarantee.

That’s right, you have an entire 3 months to test out the effectiveness of the BiSaddle with our 90 day return policy for satisfaction.

In addition to that, we’re also giving you a Lifetime materials and workmanship warranty on the chassis.

Our guarantee is simple: The BiSaddle ShapeShifter MUST provide you with COMPLETE satisfaction.

If for some odd reason it does not, all you have to do is let us know and you’re covered!

Just a plain, simple and honest guarantee!We do have one request, since BiSaddle is different from anything you’ve ridden before… we ask that you allow 50-100 miles to get used to BiSaddle. Your body isn’t used to being supported on your saddle by your sit bones. It’s like using new muscles and will take a little time to get used to. Just read the testimonials from people who initially thought it might not work for them, then discovered BiSaddle was the answer for ultimate comfort. And since BiSaddle is adjustable it might take a little “tweaking” to get it just right for you.

Fair enough?

NOW’s the time for you to get IMMEDIATE relief of pain, discomfort & PREVENT health issues.

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$ 229.00