With specs like carbon spokes, almost 50mm mid-depth and super-wide aero carbon rims, class-leading wind tunnel efficiency numbers, and a complete wheelset weight of simply 1156g – the brand new Hunt 4AM Limitless Ti UD Carbon Spoke wheels look fairly superb.
When Hunt launched their 5AM Limitless ultralight aero wheels with carbon spokes simply again in April, we have been already stunned at how nicely they balanced main aerodynamic efficiency with an ultralight weight of simply 1212g. (And we realized that they have been referring to rim depths being Aero Maximised, not ante meridiem, or getting up tremendous early within the morning to experience highway bikes.)
And now Hunt are again right here once more with one other, extra versatile set of barely shallower aero carbon wheels, and so they’re even lighter nonetheless!
Plus, these 5AMs and these new 4AMs additionally add extra reasonably priced and nonetheless aero variations with bladed metal spokes, too.
Hunt 4AM Limitless ultralight aero wheels with carbon spokes
Hunt describes these new 4AM wheels as optimized for “ultralight responsiveness and category-leading aero effectivity for prime alpine racing environments“. Nevertheless it’s laborious for us to only get previous the straightforward proven fact that they’re tremendous aero and ultra-lightweight. Hunt says they’re “wind tunnel examined to offer a 1.4-Watt aero benefit over the Tour de France-winning ENVE SES 4.5 Professional, whereas providing a 139-gram weight financial savings“, which is fairly wild.
And whereas these new Hunt 4AM wheels are a number of the costliest the model has ever offered, they’re nonetheless 15% cheaper than Pogi’s wheels.
Key Limitless Aero Maximised Tech
You continue to get front- & rear-specific 23mm inside hooked carbon rims just like the 5AMs, designed to go quickest with fashionable 28-30mm huge tires. Wider outdoors and deeper up entrance, the place the wind is cleaner, and the place it’s extra vital to maintain airflow connected at increased yaw angles for controllable dealing with & stability, even in variable winds.
Then, lighter, narrower, and incrementally shallower out again, the place there’s much less aero impact. And you continue to solely want 15 of the aerofoil bladed Vonoa carbon spokes up entrance, and 18 within the rear, all with recessed nipples for easy airflow.
Hunt describes their Limitless aero wheel design as a “extra holistic method”, a 5-stage course of that features preliminary CFD design, wind tunnel testing with wheel-only, in-bike, after which with an actual rider, adopted by real-world out of doors testing with AeroSensor drag sensors. That’s how their wheels go from aero design to ‘Aero Maximised’.
What’s new, then for 4AM?
Now for the brand new 4AM, the entrance rim is 49.5mm deep by 34.2mm outdoors, once more with Hunt’s low-density polymer Limitless Width Aero Tech filler inside that retains rim weight low. Out again, the rim is 47mm deep x 30mm huge exterior. Positive, they’re nearly 50mm deep, however not fairly, therefore the 4 of their identify. However nonetheless about 8mm shorter than the 5AM.
How briskly are the brand new wheels?
Hunt says the brand new 4AM Limitless Ti_UD Carbon Spoke wheels outperform the most effective mid-depth 40-50mm deep aero wheels in the marketplace. They usually do it at each lighter weight and a extra accessible (if not fairly reasonably priced) pricepoint. Hunt additionally says the 4AMs are just about as quick as some prime wheels within the subsequent deeper class, too.
“In wind tunnel testing carried out at Silverstone Sports activities Engineering Hub (each wheels on bike), mounted with 30mm tyres at 45 km/h, the 4AM Limitless Ti_UD wheelset (1156g) assessments 1.4 watts sooner than the ENVE 4.5 Professional whereas being 139 grams lighter. In comparison with the considerably deeper and heavier DT Swiss 55 ARC Dicut BD (1479g) and Reserve 57/64 Turbulent Aero (1554g) wheels, the 4AM Limitless Ti_UD performs inside 0.1 watt.
Learn extra if you wish to nerd out of their full in-depth whitepaper on the 4AM & 5AM wheelsets, right here.
Tech particulars
aerodynamic carbon rims constituted of a mixture of T700, T800 & T1000 UD carbon fiber
plus low-density high-mod Mitsubishi Pyrofil HR 40 12M fiber filler within the entrance rim
49.5mm deep x 34.2mm huge entrance wheel
47mm deep x 30mm huge rear wheel
23mm inside hooked tubeless carbon rims, entrance & rear
high-gloss end for straightforward cleansing
15 entrance &18 rear Ti_UD Vonoa aero bladed carbon spokes with 6AL-4V titanium {hardware}
CNC-machined 7075-T6 Hunt Chase SLC centerlock disc brake hubs
48T, 7.5° engagement H_Ratchet DBL freehub
sealed chrome steel or hybrid (ceramic balls + stainless races) CeramicSpeed bearings
optimized aerodynamics for 28mm-30mm tires
ETRTO suitable with 28-50mm tires, tubeless or clincher
from 1156g wheelset weight (claimed)
UCI accredited
Hunt 4AM Limitless aero wheel – Pricing & choices
Hunt’s new ultralight aero carbon 4AM Limitless wheels are provided in three variations.
The quickest and lightest are the Hunt 4AM Limitless Ti_UD Carbon Spoke wheels with hybrid CeramicSpeed bearings, promoting for £2449 / $3159 / 2859€, or fifty buckaroos lower than the 5AMs. Subsequent up are the 4AM Limitless Ti_UD Carbon Spoke wheels with chrome steel bearings at a barely extra approachable £1959 / $2559 / 2299€, once more a bit cheaper than the identical 5AMs.
New for the 4AM household are wheels with extra typical triple-butted, aero bladed Pillar SuperWing 20 spokes, too. With 20 entrance & 24 rear, and nonetheless with recessed nipples. Sticking with stainless bearings and in any other case all the things else the identical, the 4AM Limitless Metal Spoke Wheels weigh 1283g, nonetheless are 1.13W sooner than these ENVE SES 4.5 Professional wheels, however are fairly a bit extra reasonably priced at £1659 / $2359 / 1959€.
Hunt 5AM Limitless wheels with metal spokes, too!
And now along with the three 4AM’s there are actually 3 5AM choices too. The newly added 5AM Limitless Metal Spoke Wheels weigh 1339g, with 20 entrance/24 rear Pillar SuperWing 20 spokes, and promote for £1699 / $2399 / 1999€.
New Hunt 4AM & 5AM Limitless wheel actual availability…
All the new 4AM and 5AM Limitless wheels can be found to pre-order beginning as we speak. However the completely different wheels will begin exhibiting up in your mailbox at completely different instances.
The usual 5AM Limitless with metal spokes will really be first, delivery from Hunt’s UK, US & EU distribution facilities already subsequent week.
However for all the new 4AM wheels – carbon spoke + Ceramic Pace, carbon spoke with common bearings, and metal spokes & bearings – they’ll begin delivery in a single month’s time, beginning in late June 2026.
HuntBikeWheels.com
