Hunt's new 4AM Limitless takes direct aim at ENVE's Tour-winning climbing wheel — claiming a lighter, faster all-rounder from 1,156g, with your choice of exotic carbon or sensible steel spokes.
What Hunt just launched
Hunt has added the 4AM Limitless to its growing Limitless road range, slotting in below last month's deeper 5AM as the brand's pick for fast, hilly racing where every gram on a climb still has to earn its aero keep. The headline act is the carbon-spoke Ti_UD build at a claimed 1,156g a pair (with CeramicSpeed bearings), with a more affordable steel-spoke version at 1,283g.
The magic word is "Limitless": Hunt moulds a low-density structural polymer between the carbon layers of the rim, letting it run a wide, aero-friendly profile without the weight a normal all-carbon rim of that girth would carry. The rims are built from T700/T800/T1000 unidirectional carbon, spin on Hunt's Chase SLC centre-lock hubs, and use a 48-tooth, 7.5° H_Ratchet DBL freehub.
By the numbers
Source: road.cc / BikeRadar
Carbon spokes, steel spokes and the asymmetric aero bet
The 4AM is deliberately lopsided. The front rim is the deeper, wider one (49.5mm deep, 34.2mm external) because that's where clean, laminar air does the most aero work; the rear is shallower and narrower (47mm deep, 30mm external) where the airflow is already turbulent and matters less. Both share a 23mm internal width and hooked, tubeless-ready beads.
Spokes are where the two builds split. The carbon model uses Hunt's Vonoa Ti_UD bladed carbon spokes — just 1.7g each — so stiff that Hunt cuts the count to 15 front / 18 rear to shave drag. The steel build runs 20 front / 24 rear Pillar SuperWing 20 triple-butted aero spokes, with the same hidden-nipple finish for a clean rim surface.
4AM Limitless: carbon spoke vs steel spoke
| Ti_UD carbon spoke | Steel spoke | |
|---|---|---|
| Claimed weight (set) | 1,156 g | 1,283 g |
| Spoke count (front / rear) | 15 / 18 | 20 / 24 |
| Spoke type | Vonoa Ti_UD carbon, 1.7g ea | Pillar SuperWing 20 steel |
| Claimed aero vs ENVE 4.5 Pro | +1.4 W | +1.13 W |
| Price, stainless bearings | £1,959 (~R42 600) | £1,659 (~R36 100) |
| Price, CeramicSpeed bearings | £2,449 (~R53 300) | — |
Specs: BikeRadar / Hunt
View data table
| Claimed weight (g) | |
|---|---|
| 4AM Ti_UD (carbon spoke) | 1156 g |
| 4AM Steel spoke | 1283 g |
| 5AM Steel spoke | 1339 g |
What the press is saying
Independent verdicts from across the cycling press — follow each link for the full review.
Frames the 4AM as undercutting the Tour-winning benchmark on both weight and watts
“Hunt asserts a "1.4-watt aero advantage (at 45kph)" over the ENVE 4.5 Pro wheelset that Tadej Pogačar used to win the Tour de France.”
Read the full reviewExplains the front-deep, rear-shallow design logic
“Hunt says that maximum aero benefits come at the front of the bike, where the airflow is more laminar, while airflow at the rear wheel is turbulent.”
Read the full reviewSees the 4AM as collapsing the old climb-vs-aero divide
“For years, lightweight climbing wheels and deep aero wheels lived in separate worlds.”
Read the full reviewThe early read
- Genuinely light for a ~48mm aero rim — 1,156g undercuts most deep climbing wheels
- Hunt's claimed figures beat the ENVE SES 4.5 Pro on both weight and watts
- Steel-spoke build keeps most of the performance for roughly a third less money
- Wide 23mm internal hooked rim happily runs modern 28–30mm tyres
- Strong support: 3-year warranty plus lifetime crash replacement for original owners
- Aero and weight numbers are Hunt's own wind-tunnel claims — no independent testing yet
- Hooked rims only — no hookless, and aero is optimised for a narrow 28–30mm window
- CeramicSpeed carbon-spoke build pushes past £2,400 (~R52 200) (foreign pricing, before SA import)
- 120kg system-weight limit may rule out heavier riders carrying luggage
Tap to vote — see how readers lean
Hunt 4AM Limitless: your questions
How much do the Hunt 4AM Limitless wheels weigh? +
Hunt claims 1,156g a pair for the carbon-spoke Ti_UD build (with CeramicSpeed bearings) and 1,283g for the steel-spoke version. Both are full disc-brake wheelsets.
What do they cost? +
Direct from Hunt: carbon spoke from £1,959 (~R42 600) (stainless bearings) up to £2,449 (~R53 300) (CeramicSpeed); steel spoke £1,659 (~R36 100). That's roughly US$2,559 (~R42 200) / €2,299 (~R43 100) at the entry point. South African retail varies by distributor and import duty — check the live price tracker above.
Are they tubeless, and hooked or hookless? +
They're tubeless-ready but hooked only — Hunt does not offer a hookless option. The 23mm internal rim takes 28–50mm tyres, though aero is optimised around 28–30mm.
Carbon or steel spokes — is the upgrade worth it? +
The carbon-spoke build saves 127g and, per Hunt, about 0.27 watts more aero, but costs roughly £300 (~R6 500) more. Steel keeps most of the performance for less; carbon is the weight-weenie / marginal-gains pick.
When can I buy them, and is there a weight limit? +
The 4AM ships from late June 2026 (the wider Limitless range began shipping late May 2026). Hunt lists a 120kg maximum system weight, a 3-year warranty and lifetime H_Care crash replacement for original owners.
Sources & further reading
- Hunt launches lightweight 4AM Limitless aero wheels (original) — road.cc
- New Hunt 4AM Limitless climbing wheels are faster and lighter than Pogačar's — BikeRadar
- From just 1156g, Hunt's 4AM wheels are both super light AND aero — Bikerumor
- Hunt launches lighter 4AM Limitless Ti_UD wheelset with carbon spokes — Cyclist
- Hunt goes lighter with new 1156g aero climbing wheels — Canadian Cycling Magazine
- HUNT 4AM Limitless Disc Wheelset (product page) — Hunt Bike Wheels
The 4AM Limitless is classic Hunt: take a benchmark everyone respects — here the Tour-winning ENVE SES 4.5 Pro — and claim to beat it on weight, watts and price all at once. On paper it's a compelling shallow-aero climbing wheel, and the steel-spoke option is the smart-money pick for most riders who don't need the last 127g.
The caveat is the usual one: every aero and weight figure here is Hunt's own wind-tunnel claim, so treat the ENVE comparison as a launch headline until independent tests land. For South African buyers, watch the price tracker above — direct UK pricing is keen, but import duty and distributor margins are what will decide whether this is the bargain it looks like.
