ISM PS Series No Nose Bike Saddle – Noseless Bike Seat Designed for Triathletes, Time Trial Riders, and Road Racers – Patented Split Nose Bicycle Saddle Designed for Reduced Discomfort review

The ISM PS Series is worth considering if you ride in a forward, race-focused position and want to try a split-nose design; the Amazon listing price is $249.88 ISM PS Series No Nose Bike Saddle – Noseless…. The PS 1.0 is described for triathlon, time-trial and aggressive road riding, with firm support, but the available evidence doesn’t establish that every rider will feel less discomfort ISM PS 1.0 Saddle | RA Cycles Amazon.com: ISM PS 1.0 Tri Saddle – Noseless….

• The PS 1.0 is described as a noseless split-nose saddle for triathlon, time-trial and aggressive road riding ISM PS 1.0 Saddle | RA Cycles.
• The Amazon listing gives the PS 1.1 dimensions as 250 mm by 130 mm and the PS 2.0 dimensions as 245 mm by 130 mm Amazon.com: ISM PS 1.0 Tri Saddle – Noseless….
• ISM recommends positioning its saddle five to eight centimeters farther back than a traditional saddle ISM Saddles | Bike Seats for Comfort and….
• The Amazon listing price is $249.88, and the listing says the product is in stock ISM PS Series No Nose Bike Saddle – Noseless….

What is the ISM PS Series, and how does its split-nose design work?

The ISM PS Series uses a split front rather than a conventional continuous saddle nose. The manufacturer says the front arms and deep center channel support the pubic rami bones instead of placing weight on soft tissue ISM Saddles | Bike Seats for Comfort and…. The PS 1.0 is described as a noseless split-nose saddle for triathlon, time-trial and aggressive road riding ISM PS 1.0 Saddle | RA Cycles.

That shape has a stated purpose, not a verified outcome. ISM says the split design is intended to relieve pressure on the perineum and, in turn, the pudendal nerve and artery A Better Bike Seat? Two Arms, No Nose. Another source describes the forked front as intended to reduce numbness and increase contact with the sit bones A Better Bike Seat? Two Arms, No Nose. Those descriptions explain the design rationale; they don’t establish how a particular rider will feel.

In short, the ISM PS Series is built around a different contact arrangement, not a promise that discomfort disappears. The ISM PS Series sources describe the intended support points, but provide no independent test result confirming pressure reduction for all riders.

ISM PS Series No Nose Bike Saddle – Noseless Bike Seat Designed for Triathletes, Time Trial Riders, and Road Racers – Patented Split Nose Bicycle Saddle Designed for Reduced Discomfort

$249.88

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What are the differences in dimensions, padding, and riding style among ISM PS models?

The Amazon listing gives the PS 1.1 dimensions as 250 mm long by 130 mm wide and the PS 2.0 as 245 mm by 130 mm Amazon.com: ISM PS 1.0 Tri Saddle – Noseless…. A separate source gives the PS1.1 length as 245 mm, so the available figures disagree; the sources don’t resolve that discrepancy A Better Bike Seat? Two Arms, No Nose.

The PS 1.0 uses minimal 15-series foam and gel padding ISM PS 1.0 Saddle | RA Cycles, and its listing calls it the firmest-feeling PS saddle Amazon.com: ISM PS 1.0 Tri Saddle – Noseless…. The ISM PS Series also has a short nose and is described as suiting riders who usually stay in one saddle position, while still allowing minor movement Choosing the right ISM Saddle. By contrast, the PL chassis is 275 mm long and allows fore-aft movement Choosing the right ISM Saddle.

For a more upright position, the PR options are described as wider and more padded: PR saddles are 140–145 mm wide with padding rated 40–60 Choosing the right ISM Saddle. The PR 2.0 has more padding than the PS series, while the PR 3.0 is wider and bulkier than the PR 2.0 Proper use of ISM and fi’zi:k. The sources don’t provide a complete, consistent dimensions-and-padding table for every PS model. The ISM PS Series figures should therefore be read model by model, not as a full range specification.

How does the ISM PS Series compare with a conventional saddle?

The ISM PS Series is intended to change where a rider’s weight rests, but the sources don’t provide a measured head-to-head comparison with a conventional saddle. ISM says traditional saddles can compress the pudendal nerves and arteries, especially when a rider rotates the hips forward ISM Saddles | Bike Seats for Comfort and…. That is the manufacturer’s explanation of the problem its design aims to address.

The PS 1.0 product description says its split nose shifts pressure toward the sit bones and eliminates perineal contact ISM PS 1.0 Saddle | RA Cycles. These are product claims, not findings from comparative testing. They help explain why someone adopting a forward-leaning riding position might consider the shape, but they don’t establish that every rider will experience less discomfort.

There is also no evidence here quantifying pressure, numbness or comfort against a standard saddle. The ISM PS Series presents a distinct design approach and an intended riding position; the sources don’t guarantee a result for every body or setup. Treat the stated pressure-relief purpose as a reason to investigate fit, not as proof of an individual outcome.

How should you measure sit-bone width and adjust an ISM PS saddle?

The available sources give no sit-bone measurement procedure and no formula for matching a rider’s width to a particular ISM PS Series model. That leaves an important fit question unanswered: the source material doesn’t say how to measure your sit bones or translate the result into a saddle width.

For fore-aft placement, ISM says to position its saddle five to eight centimeters farther back than a traditional saddle because the front two to three inches of nose are absent ISM Saddles | Bike Seats for Comfort and…. ISM also recommends setting the saddle about five millimeters lower than a traditional saddle to maintain the same body height ISM Saddles | Bike Seats for Comfort and…. These are starting points from the manufacturer, not a substitute for individual adjustment.

A separate source recommends a slight downward tilt of the front third, while warning against tilting so far that you feel as if you’re sliding forward Proper use of ISM and fi’zi:k. Taken together, the ISM PS Series guidance offers a position and height reference, but the sources don’t establish a universal fit. Check how the resulting position feels and adjust to your own setup rather than treating the numbers as a guarantee.

Disclosure: As an Amazon Associate, I earn from qualifying purchases.

What is the typical price range for ISM PS Series saddles?

The Amazon listing prices the reviewed ISM PS Series product at $249.88 and marks it in stock ISM PS Series No Nose Bike Saddle – Noseless…. That is a listing price for the product, not evidence of one typical price across every PS model or seller.

Other sources give historical prices in different currencies: one lists the PS 1.0 at €217.95, and another reports the PS1.1 at $190 ISM PS 1.0 Saddle | RA Cycles A Better Bike Seat? Two Arms, No Nose. These figures come from different sources and aren’t a consistent, current model-by-model price list. A further source says selected ISM saddles with steel or chrome-moly rails generally sell for $120 to $150; it doesn’t identify that range as a current PS-series price Proper use of ISM and fi’zi:k.

So the available evidence doesn’t establish a single typical current price for the ISM PS Series. The Amazon price is the clearest current listing figure supplied here, while the other amounts are source-specific historical or broader references. Compare the exact model and listing before treating any figure as representative of the whole line.

What comfort or compatibility trade-offs come with switching to a noseless saddle?

One PS1.1 reviewer found the shifted contact points firm and initially unpleasant, then reported that the riding sensation improved after getting accustomed to the saddle A Better Bike Seat? Two Arms, No Nose. That’s one person’s account, not a promised adaptation period or a forecast for your comfort. The sources don’t establish how long adjustment takes for other riders.

The ISM PS Series favors a short-nose shape and a mostly fixed seated position, though the source allows for minor movement Choosing the right ISM Saddle. If you want more fore-aft movement, the longer PL chassis is described as allowing it Choosing the right ISM Saddle. This is a practical distinction between saddle shapes, not proof that one arrangement will suit you better.

The source material provides no general compatibility checklist covering bikes, shorts or rider anatomy. It also doesn’t establish fit for every body. Before switching, weigh the intended riding position against the reported firm feel and the limited movement described for the PS shape. The ISM PS Series may ask you to adapt to different contact points, but the evidence can’t say how that will feel in your case.

Which ISM PS Series model suits road, triathlon, or upright riding?

The PS 1.0 is described for triathlon, time-trial, track and aggressive road use, with a firm feel and support for a steady aero position ISM PS 1.0 Saddle | RA Cycles Amazon.com: ISM PS 1.0 Tri Saddle – Noseless… ISM PS Series No Nose Bike Saddle – Noseless…. Its listing and product sources also describe a raised rear support and a rear transition hook for bike racking ISM PS 1.0 Saddle | RA Cycles Choosing the right ISM Saddle. These are stated features, not comparative test results.

The PS1.1 is intended for time-trial and triathlon riding where a forward-leaning posture is expected A Better Bike Seat? Two Arms, No Nose. The PS line differs from the PR options, which are described as wider and more padded for a more relaxed, upright position Choosing the right ISM Saddle Proper use of ISM and fi’zi:k. One source recommends the PS 2.0 as a starting point if you’re unsure which ISM saddle to choose, but that is an opinion rather than an established fit rule Choosing the right ISM Saddle.

The ISM PS Series doesn’t have one model proven best for every rider, and the available evidence includes no test results comparing the models. Match the descriptions to your riding position, while keeping in mind that the sources don’t provide a complete fit comparison across the range.

Pros and Cons

Final Verdict

Frequently Asked Questions

Are noseless bike saddles any good?

A noseless saddle may suit you if its intended pressure-relief design and riding position fit your needs, but the sources don’t establish that every rider will experience less discomfort ISM PS 1.0 Saddle | RA Cycles A Better Bike Seat? Two Arms, No Nose.

Are ISM saddles any good?

The sources describe ISM saddles’ design intentions and features, but don’t provide comparative tests proving better comfort for every rider ISM Saddles | Bike Seats for Comfort and… ISM PS 1.0 Saddle | RA Cycles. One PS1.1 reviewer reported an initially firm, unpleasant feel that improved after getting accustomed to the saddle A Better Bike Seat? Two Arms, No Nose.

Which noseless bike seat is the best?

The available evidence doesn’t identify one best noseless seat for everyone. The PS 1.0 is described for triathlon, time-trial and aggressive road riding ISM PS 1.0 Saddle | RA Cycles, while individual fit results aren’t established.

Which ISM saddle is best?

No source establishes one best ISM saddle for every rider. The PS 2.0 is one source’s suggested starting point for shoppers unsure which ISM saddle to choose, but that recommendation is an opinion Choosing the right ISM Saddle.

Disclosure: As an Amazon Associate, I earn from qualifying purchases.