Sunday, March 8, 2026

New Stability FuelCell Insurgent v5 Assessment

New Stability FuelCell Insurgent v5 Assessment

New Stability FuelCell Insurgent v5 Introduction

In 1906, William Riley seen how chickens have excellent stability with their 3-pronged toes. He then designed a versatile arch help with a 3-point system and he named the corporate “New Stability”.

All through the years, most of New Stability’s choices have been comparatively steady. From impartial trainers just like the 1080, all the way in which to their pace vary (the SC Elite & SC Coach), all of them have very supportive, steady rides.

The Insurgent v1 was one of many wild footwear which was an exception. It had an uncommon lateral wing which inspired an inward ankle rolling movement. Should you had been an overpronator, this shoe was unsuitable for you.

Through the years, the Insurgent design turned much less and fewer radical with every new iteration, and the lateral wing turned much less distinguished. Now, with v5, it has been fully eliminated. It is a good factor as a result of it makes it appropriate for a wider vary of runners.

Final 12 months, once I reviewed the Insurgent v4, I mentioned that it was the most effective model to this point. It felt extra like a light-weight, pace coach than its predecessor and its new midsole was a giant improve. The one factor I didn’t like was its higher that felt too dishevelled.

The Insurgent v5 weighs 221 g (7.8 oz). That is 17 grams (0.6 oz) heavier than v4 which is about 1 slice of bread. It has taller stack heights of 35 mm/29 mm, which is 5 mm greater than v4 in each the heel and forefoot. The value stays $140.

New Stability FuelCell Insurgent v5 First Impressions

My first run was an 8 km straightforward run. The very first thing that I seen was how a lot better the higher match me. It didn’t really feel as dishevelled as v4 and foot lockdown was improved. The mesh felt comparable however the brand new, padded tongue made it really feel extra comfy.

The journey felt softer and bouncier whereas the cushioning felt barely deeper. It was a bit much less steady than v4 because of the softer journey. It additionally didn’t really feel as quick as its predecessor.

The shoe it jogged my memory of was the Saucony Endorphin Velocity 5 however with extra vitality return and a extra agile journey. It was additionally softer than the Endorphin Velocity 5 and had a way more participating journey.

New Stability FuelCell Insurgent v5 Higher

The higher is the largest space of enchancment. It isn’t overly spacious like v4 and foot lockdown is healthier. This creates a stronger connection between your toes and the only.

The brand new tongue is gusseted and it has a skinny layer of padding which makes it really feel extra comfy. The heel tab can also be extra padded than earlier variations. These adjustments make it really feel extra like a day by day coach than a pace coach.

There are extra reflective components than v4. The writing on the tongue, the complete NB logos on the perimeters, the highest of the toe field and the again of the heels are all reflective, making it a safer coach when coaching in low gentle circumstances.

Relating to sizing, I like to recommend shopping for your regular working shoe dimension. It nonetheless has a comparatively spacious midfoot, forefoot and toe field so I can advocate it for wide-footed runners.

New Stability FuelCell Insurgent v5 Sole Unit

In recent times, the Insurgent has flip-flopped between feeling like a day by day coach and feeling like a pace coach. Model 3 felt gentle and cushioned like a day by day coach, model 4 felt gentle and quick, and now model 5 appears like a day by day coach once more.

The principle distinction within the midsole of this new model is that it’s softer than v4. Not solely does it have extra 5 mm stack top however the foam additionally feels prefer it’s a decrease density. It’s roughly 10%-15% softer than the journey of the Insurgent v4.

The Insurgent v5’s softer journey makes it really feel extra like a day by day coach than a light-weight pace coach. Whereas v4 felt nimble, agile and positioned your toes decrease to the bottom, v5 has extra relaxed transitions which is extra suited to slower running- its midsole compresses extra.

As a midsole foam for coaching, the FuelCell within the Insurgent v5 is correct up there with essentially the most participating midsole coaching foams in the marketplace. It’s light-weight, it returns loads of vitality and it’s very gentle so it protects you from floor influence.

It’s a mix of PEBA and EVA and whereas it doesn’t compress or spring again as shortly as a full PEBA midsole (SC Elite v4), I prefer it greater than the firmer, beaded PEBA midsoles that manufacturers like Saucony and TOPO use. The Insurgent is unquestionably for runners who get pleasure from a gentle and squishy journey.

The longest run I did within the Insurgent v5 was 34 kilometres at a simple tempo. The additional stack top made it extra fulfilling than its predecessors however I needed it had a extra distinguished rocker (and stiffer forefoot) to assist me save vitality. I feel 34 km is the furthest I might run in it. It requires sturdy joints and muscle tissue to run lengthy distances in it as a result of its comparatively unstructured midsole.

I get pleasure from utilizing the Insurgent v5 for straightforward or steady-paced working. It’s additionally enjoyable to make use of for fartlek runs that contain brief bursts. For tempo, threshold runs and intervals, I discover it too versatile and never snappy sufficient.

There’s nonetheless no plate or shank contained in the midsole of the Insurgent v5 and this makes it more durable to select up the tempo than different light-weight trainers such because the Adidas EVO SL. New Stability ought to implement a mini plate into the Insurgent to make it extra versatile. It’s going to additionally add construction and make it extra steady.

Stability is worse within the Insurgent v5 than v4. The bottom is narrower than v4 and your toes sit increased off the bottom. The softer journey additionally leads to extra lean bias if you happen to overpronate or supinate.

The Insurgent v5’s foremost weak spot is its outsole sturdiness. The FuelCell foam may be very gentle so it will get scraped up simply within the excessive put on areas. I’ve accomplished 120 km in my pair and the outer lateral heel space is exhibiting some important put on, much more put on than on the v4.

The outer lateral heel strip of rubber is shorter than v4 so it doesn’t provide as a lot safety for heel strikers. This isn’t a day by day workhorse that you need to use for junk, day-after-day miles. Traction is appropriate in moist circumstances; good in dry circumstances.

New Stability FuelCell Insurgent v5 Conclusions

This model of the Insurgent strays farther from what the unique Insurgent was designed to be: a quick, light-weight, pace coach. Nonetheless, most runners I do know desire to make use of a plated coach/racer for pace coaching so the Insurgent is now a day by day coach for many runners.

Should you use the Insurgent for uptempo coaching or racing, you’ll desire the firmer, sooner v4 however if you happen to use it for straightforward or relaxed runs, you’ll desire the softer, extra cushioned v5. I personally desire v5 as a result of I’ve slim, low quantity toes and the higher feels extra comfy.

The Insurgent v5 continues to be an thrilling, light-weight coach with an interesting journey. It disappears in your toes and it has velvety easy transitions. It does nevertheless have very low outsole sturdiness and doesn’t present a lot help.

I feel $140 is the best value for the Insurgent. It could seem to be nice worth as a result of it has PEBA in its midsole but it surely has very low outsole sturdiness and if you happen to’re arduous on outsoles like me, you most likely received’t be capable of get greater than 300 kilometres out of it. I additionally discover that sharp stones and twigs simply pierce the gentle foam.

In comparison with the competitors, the Adidas EVO SL is the largest risk. It prices $10 greater than the Insurgent but it surely feels sooner as a result of its firmer journey and its midfoot shank. Most runners who’ve tried each, myself included desire the EVO SL. The Insurgent v5 has a extra comfy higher and feels extra steady.

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