NEW

HUNT 4AM Limitless Disc Wheelset

1283g	Depth	Width ext	Width int	size
1283g	F50 / R47 mm	F34 / R30 mm	23 mm	700c

Everyday versatility, limitless potential.

The 4AM Limitless accelerates faster while delivering speed across steep mountain climbs and handles blistering descents with confidence at race pace. Engineered through HUNT's 5-Stage Aero Development, with patented Limitless Width Aero Technology to help you achieve WorldTour level performance, every day of the week.

Tyre size: 28–30mm tyres for maximum efficiency and stability. Hooked rim supports up to 50mm tubeless or clincher setups.

Freehub

Pre-Order Now. Shipping: Jul Wk 2

£1,659

We will ask for axle info after checkout.

More details

The Purpose.

Engineered for the demands of World Tour riders, in a package to help any rider perform their best on the hardest days. The 4AM Limitless maintains speed and composure whether on fast flats to high alpine mountain roads. By optimising the balance between weight, aero drag, and stability, the HUNT in-house engineering team has set the standard for mid-depth road wheels.

Drawing on ten years of wheel development, materials innovation and an evolving process of aerodynamic and real-world testing, the 4AM Limitless was created using a complete system approach to performance. Each component of the wheel system was engineered, vetted and validated through HUNT’s 5-Stage Aero Development process, to make riders faster in actual racing conditions, not just on paper.

Key Features.

Limitless Width Aero Technology

HUNT patented carbon construction.
Low density structural polymer moulded between carbon layers.
Width without weight.

Fast & Stable Profile

Aero maximised front rim profile.
Reduced aerodynamic drag.
Improved stability through higher wind angles.

Aero Drag Reduction Spoke Design

Pillar Super Wing 20 spokes with aerofoil profile.
Triple butted to 0.95mm to increase strength & reduce weight.
Internal spoke nipples reduce turbulence across rim surface.

Chase SL Hub System

Precision-machined from high strength 7075 alloy. 277g per pair.
Dual-sided zinc-coated ratchet system.
7.5° engagement angle.

Technology.

Designed by HUNT’s in-house engineering team, the 4AM Limitless is the stablemate to our flagship 5AM – it shares the same rider-first philosophy and aerodynamic DNA but tuned for those who want Limitless performance in a more versatile, everyday package. Built on years of aerodynamic learning and the same 5-Stage Aero Development process that shaped the 5AM, the 4AM is engineered to perform in the real world, with a rider on the bike. Through this proven, layered development process and patented Limitless Width Aero Technology, performance is maximised to achieve the optimal balance between aerodynamics and weight, delivering the fastest wheel system available under 50mm.

The front wheel runs in clean air, offering the greatest opportunity to reduce drag. By increasing rim depth and width, while minimising rotational drag through reduced spoke count, hidden spoke nipples and low-profile hub design, we maximise aerodynamic efficiency where it matters most without compromising crosswind stability.

The rear wheel encounters turbulent airflow, downstream of the front wheel, frame, and rider movement, making rear wheel aerodynamic gains less important in the context of the complete system. Rear wheel efficiency is achieved by reducing weight and maximising power transfer. A shallower, narrower rim paired with additional spokes delivers enhanced responsiveness and efficient transmission of every watt to the road. So how fast is the system?

In wind tunnel testing performed with 30mm tyres at Silverstone Sports Engineering Hub, the 4AM Limitless Steel Spoke wheelset tests 1.13 watts faster than Tour de France-winning ENVE 4.5 Pro.

Read the full in-depth white paper, here.

Full Specs.

Rims

49.5mm deep front rim profile with a 34.2mm external width. 47mm deep rear profile with a 30mm external width. Hooked 23mm internal profile. Compatible tyres ranging from 28mm-50mm to be fitted including tubeless. or clincher tyres in line with ETRTO guidelines. Aerodynamically optimised for a 28mm-30mm tyre. A unique carbon fibre layup strategy, comprised of T700, T800, T1000 and a high modulus Mitsubishi Pyrofil HR4012M carbon. Pre-formed 3D spoke reinforcement. Designed by HUNT’s in-house Engineering Team using Computational Fluid Dynamics (CFD) and then validated using wind tunnel testing. High gloss finish unidirectional carbon fibre rim.

49.5mm deep front rim profile with a 34.2mm external width.
47mm deep rear profile with a 30mm external width.
Hooked 23mm internal profile.
Compatible tyres ranging from 28mm-50mm to be fitted including tubeless. or clincher tyres in line with ETRTO guidelines.
Aerodynamically optimised for a 28mm-30mm tyre.
A unique carbon fibre layup strategy, comprised of T700, T800, T1000 and a high modulus Mitsubishi Pyrofil HR4012M carbon.
Pre-formed 3D spoke reinforcement.
Designed by HUNT’s in-house Engineering Team using Computational Fluid Dynamics (CFD) and then validated using wind tunnel testing.
High gloss finish unidirectional carbon fibre rim.

Spokes

20 front | 24 rear (2 cross both sides). Pillar Super Wing 20 with aerofoil profile to reduce aero drag. Triple butted 2.2/0.95/2.0mm to increase strength. Straight-pull excellent torsional strength and direct power transfer. Cold drawn from high grade T302 (18/10) stainless steel by Sandvik Sweden. Patented Pillar spoke reinforcement, additional butting near the head of the spoke to increase strength in this high-stress area. Black stainless treatment.

20 front | 24 rear (2 cross both sides).
Pillar Super Wing 20 with aerofoil profile to reduce aero drag.
Triple butted 2.2/0.95/2.0mm to increase strength.
Straight-pull excellent torsional strength and direct power transfer.
Cold drawn from high grade T302 (18/10) stainless steel by Sandvik Sweden.
Patented Pillar spoke reinforcement, additional butting near the head of the spoke to increase strength in this high-stress area.
Black stainless treatment.

Nipples

Internal spoke nipples for increased aerodynamic performance. 10mm in length. Double square internal nipples for truing. Black anodised finish.

Internal spoke nipples for increased aerodynamic performance.
10mm in length.
Double square internal nipples for truing.
Black anodised finish.

Front Hub

Chase SL front hub. CNC machined from 7075-T6 heat-treated aluminium. Hub weight of 88g. 7075-T6 aluminium alloy axle to increase stiffness. Push-fit endcaps for easy serviceability. Satin gunmetal grey finish.

Chase SL front hub.
CNC machined from 7075-T6 heat-treated aluminium.
Hub weight of 88g.
7075-T6 aluminium alloy axle to increase stiffness.
Push-fit endcaps for easy serviceability.
Satin gunmetal grey finish.

Rear Hub

Chase SL rear hub. CNC machined from 7075-T6 heat-treated aluminium. Hub weight of 189g. H_Ratchet DBL 48T drive system, features two floating star ratchet rings with 48 teeth, to offer a fast 7.5° engagement angle. Zinc-coated ratchet rings to maximise longevity, tested to 100,000 cycles at 250Nm of torque. Push-fit endcaps for easy serviceability. H_CERAMIK coated alloy freehub body. Satin gunmetal grey finish.

Chase SL rear hub.
CNC machined from 7075-T6 heat-treated aluminium.
Hub weight of 189g.
H_Ratchet DBL 48T drive system, features two floating star ratchet rings with 48 teeth, to offer a fast 7.5° engagement angle.
Zinc-coated ratchet rings to maximise longevity, tested to 100,000 cycles at 250Nm of torque.
Push-fit endcaps for easy serviceability.
H_CERAMIK coated alloy freehub body.
Satin gunmetal grey finish.

Bearings

Stainless steel cartridge bearings. Manufactured by TPI. CN clearance to provide the best fitment possible and long bearing life under cycling conditions.

Stainless steel cartridge bearings.
Manufactured by TPI.
CN clearance to provide the best fitment possible and long bearing life under cycling conditions.

Tyres Info

HUNT recommends a 28-30mm tyre for best performance, tyre widths between 28mm and 50mm are also safe to use. Tubeless-ready for lower weight and rolling resistance. Also designed to work excellently with standard clincher tyres and inner tubes. You must not exceed the maximum tyre pressure limits set out in the table below or the maximum limit set by your tyre manufacturer if this is lower.

HUNT recommends a 28-30mm tyre for best performance, tyre widths between 28mm and 50mm are also safe to use.
Tubeless-ready for lower weight and rolling resistance. Also designed to work excellently with standard clincher tyres and inner tubes.
You must not exceed the maximum tyre pressure limits set out in the table below or the maximum limit set by your tyre manufacturer if this is lower.

Axle Sizes

These wheels are available in the following existing disc brake road bike axle adapter sizes. We fit the axles you need, just complete the simple form shown after checkout: Front: 12x100mm Thru-Axle, Quick Release 9x100mm. Rear: 12x142mm Thru-Axle, 12x135mm Thru-Axle, 10x135mm Thru-Axle, Quick Release 9x135mm. If you're not sure about your axle size, no problem - we’ve got you covered. You can simply provide your bike model after check out, and we’ll identify and fit the correct axle adaptors for you. If it turns out they’re not quite right, we’ll happily replace them at no extra cost. Please note: the axle form will appear after you’ve completed your order.

These wheels are available in the following existing disc brake road bike axle adapter sizes. We fit the axles you need, just complete the simple form shown after checkout:

Front: 12x100mm Thru-Axle, Quick Release 9x100mm.

Rear: 12x142mm Thru-Axle, 12x135mm Thru-Axle, 10x135mm Thru-Axle, Quick Release 9x135mm.

If you're not sure about your axle size, no problem - we’ve got you covered. You can simply provide your bike model after check out, and we’ll identify and fit the correct axle adaptors for you. If it turns out they’re not quite right, we’ll happily replace them at no extra cost.

Please note: the axle form will appear after you’ve completed your order.

High Specification Components.

Advanced Carbon Construction

4AM Limitless rims are made using a blend of T700, T800, and T1000 UD carbon fibres, with high-modulus Mitsubishi Pyrofil HR4012M - a material more common in aerospace, aviation and motorsport applications. This blend offers lateral and sidewall strength, enabling low weight without compromising durability or trueness. The high gloss finish resists dirt build up and helps minimise aerodynamic skin drag.

Pillar Super Wing 20 Spokes

All-new Super Wing spokes from our long-term partners at Pillar, with the longest aerodynamic bladed section on the market. Aerofoil shape offers maximum aero performance, combined new internal nipple interface to further reduces turbulence across the rim surface. The most aerodynamic stainless steel spoke and nipple combination that we have ever developed.

Hidden Spoke Nipples

Internal spoke nipples further reduce aerodynamic and rotational drag across the wheel system.

Limitless Aero Maximised Front Rim

HUNT patented Limitless Width Aero Technology enables us to build a rim that possesses wide, blunt dimensions and class-leading aerodynamic and side wind handling characteristics, whilst maintaining a weight that won’t detract from the all-round performance of the wheelset. What does that mean on the road? The wheel carries speed like a deeper wheel, with the stable feel of a shallower wheel.

Chase SL Hub

The Chase SL hubset is our performance hubset that has evolved from the race winning 48T DBL ratchet system, developed for our Limitless Road and Gravel Range. Coming in at an astonishing 277g for the pair, a reduction in weight found from the utilisation of higher grade 7075 alloy. This has been tested to withstand over 100,000 cycles at 250Nm of torque, providing exceptional reliability, sprint after sprint.

Precision Cartridge Bearings

Built with precision-engineered stainless steel cartridge bearings for easy maintenance, manufactured by TPI bearings with CN clearance to ensure optimal fit and long-lasting performance under real-world riding conditions.

What's in the box.

HUNT BlackShield tubeless tape fitted to wheels.
The axle adapters needed for your bike, just fill in the simple form shown after order completion. The form is also included in your order confirmation page.
Cassette spacer for 8/9/10 speed and XDR-XD compatibility.
Tyre insert compatible tubeless valves with valve core removal endcap, 80mm.
Colour-matched brake disc rotor lockrings, cassette tool fitment.
Pair of HUNT padded wheel bags.
Quality control card signed by your wheel builder.

Warranty.

A full 3 years from purchase date warranty is offered to the original purchaser only on all Hunt bike wheels against material or workmanship defects, please click here to read full details. 

These wheels come with  H_Care  FREE  Lifetime Crash Replacement which aims to protect your investment in HUNT technology by enabling first owners of eligible HUNT wheels free access to any HUNT-branded replacement parts and labour to repair in the event of damage through intended use. We will cover the reasonable cost of the labour to repair your wheels at a local bike shop or professional bike mechanic or perform the work free of charge at our nearest office. If a repair is unrealistic, we will replace your damaged wheel. 

Stated wheel weights: Our stated wheel weights reflect the wheelset only; without rim tape, tubeless valves or disc brake lock rings, as is industry standard. While a 3% variance (lower or higher) in total system weight is completely normal in manufacturing. 

All HUNT wheels models have to pass our harsh cobbled-rolling-road tests for rider weight limits, please see here for more details. Max system weight 120 kg (system weight – total weight of fully kitted up rider, bike and luggage). If the system is over 100kg then an experienced bike mechanic should check the wheel regularly.

Spares.

To see spares for the current version of these wheels, please click the button below.

Alternatively, please use our Spares Finder to find parts for all our wheels, or contact us via Live Chat.

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Rider Experience Support

Unmatched rider support, 7 days a week. For quick and immediate access to all the help you need, try our Live Chat. Our team consists of real bike riders who are fully equipped to answer any questions and help out. See Contact Us page for more details.