NEW

HUNT Timekeeper TT Disc

1174g	Width ext	Width int	size
1174g	27 mm	21 mm	700c

Freehub

Pre-Order Now. Shipping: Aug Wk 3

$1,699

We will ask for axle info after checkout.

Focus on the effort - we’ve handled the aerodynamics.

Combining rock-solid stability with razor-sharp efficiency, this wheelset allows you to channel every single watt straight into the pavement. From local time trials to the world stage, stop fighting the wind, lock into your position, and pour everything into the pedals. The TT Disc will take care of the rest.

Tire size: 25–30mm tires for maximum efficiency and stability. Hooked rim supports up to 34mm tubeless or clincher setups.

More details

The Purpose.

Engineered for relentless velocity, the "Timekeeper” TT Disc maximizes aerodynamic efficiency whether you're targeting a Club Ten PB or chasing a National Title. In full-bike wind tunnel testing at 50 km/h, its lenticular profile saves an impressive 8 watts compared to a standard 50mm carbon wheel. The subtly curved surface smooths airflow to dramatically cut drag while maintaining exceptional stability in crosswinds. Constructed from premium lightweight carbon fiber, it delivers unyielding stiffness, transferring every ounce of your effort directly into raw speed.

Key Features.

Lenticular Profile

Reduced drag.
Improved airflow attachment.
Increased stiffness.

48T Ratchet DBL Hub System

Our lightest internals & fastest engaging drive system.
Dual-sided zinc-coated ratchet system.
7.5° engagement angle.

Valve Door

Aero optimized fitment.
3x bolt fastening requiring a 1.5mm Allen key (not included) for install & removal.
Reusable time after time.

Technology.

The “Timekeeper” TT Disc integrates race-proven aerodynamic and structural technology under HUNT’s strict validation standards. Its lenticular carbon profile smooths airflow detachment across dynamic yaw angles, cutting overall wind resistance. High-modulus carbon fiber construction delivers exceptional stiffness-to-weight performance, translating your output straight into forward drive without energy dissipation. Combined with precision-machined hub internals and smooth-rolling bearings for minimal mechanical drag, the TT Disc brings a sharp, tech-forward edge to your time trial setup, engineered to maximize watts where it matters most.

Full Specs.

Rims

Lenticular rim profile. Hooked 21mm internal rim width. 27mm external width. Tubeless compatible. Compatible tires ranging from 25-34mm to be fitted including tubeless or clincher tires in line with ETRTO guidelines. Aerodynamically optimized for a 25-28mm tire. Matt carbon finish with white HUNT decal.

Lenticular rim profile.
Hooked 21mm internal rim width.
27mm external width.
Tubeless compatible.
Compatible tires ranging from 25-34mm to be fitted including tubeless or clincher tires in line with ETRTO guidelines.
Aerodynamically optimized for a 25-28mm tire.
Matt carbon finish with white HUNT decal.

Rear Hub

48T double ratchet hub system. CNC machined from 7075-T6 heat-treated aluminium. H_Ratchet DBL 48T drive system, features 2 floating star ratchet rings with 48 teeth, to offer a fast 7.5° engagement angle. Zinc-coated ratchet rings to maximize longevity, tested to 100,000 cycles at 250Nm of torque. Push-fit endcaps for easy serviceability. Centre lock rotor mounting. H_CERAMIK coated alloy freehub body.

48T double ratchet hub system.
CNC machined from 7075-T6 heat-treated aluminium.
H_Ratchet DBL 48T drive system, features 2 floating star ratchet rings with 48 teeth, to offer a fast 7.5° engagement angle.
Zinc-coated ratchet rings to maximize longevity, tested to 100,000 cycles at 250Nm of torque.
Push-fit endcaps for easy serviceability.
Centre lock rotor mounting.
H_CERAMIK coated alloy freehub body.

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.

Tires Info

HUNT recommends a 25-30mm tire for best performance, tire widths between 25mm and 34mm are also safe to use. Note: best performance is usually gained by using tire pressures lower than the maximum, you can see our blog post about this, read here. Tubeless-ready for lower weight and rolling resistance. Also designed to work excellently with standard clincher tires and inner tubes You must not exceed the maximum tire pressure limits set out in the table below or the maximum limit set by your tire manufacturer if this is lower.

HUNT recommends a 25-30mm tire for best performance, tire widths between 25mm and 34mm are also safe to use.

Note: best performance is usually gained by using tire pressures lower than the maximum, you can see our blog post about this, read here.

Tubeless-ready for lower weight and rolling resistance. Also designed to work excellently with standard clincher tires and inner tubes

You must not exceed the maximum tire pressure limits set out in the table below or the maximum limit set by your tire manufacturer if this is lower.

Axle Sizes

These wheels are available with all existing disc brake road bike axle adapter sizes: Rear: 12x142mm Thru-Axle, 12x135mm Thru-Axle, 10x135mm Thru-Axle, Quick Release 9x135mm. *Shimano Microspline and Campagnolo CN3W is only available in 12x142mm. 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 with all existing disc brake road bike axle adapter sizes:

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

*Shimano Microspline and Campagnolo CN3W is only available in 12x142mm.

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.

What's in the box.

Valve door fitted to wheel.
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.
35mm tubeless valve.

Warranty.

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

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. A 3% variance (lower or higher) in total system weight is normal for wheelset manufacturing.

All HUNT wheels models have to pass our harsh cobbled-rolling-road tests for rider weight limits, please see here for more details. A max system weight of 125 kg (system weight – total weight of fully kitted up rider, bike and luggage). If a rider is over 115 kg 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.

Spares finder

We've got your back.

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.

Spares Available

Any spares for our wheelsets can be found on our website. If you assistance, contact us and we can help you.

Next Day Shipping

As enthusiastic cyclists, we know you want your bike gear so we make sure all in-stock items are packed and dispatched within 1 working day.* As soon as your order is dispatched you’ll receive an email notification.

*Subject to stock levels & cleared payment

60 Day Ride and Return

We are so confident that you'll be happy with you HUNT wheels that we offer a full 60 day to ride them & return for a full refund (or product swap). Click here to learn more.

Riders Reviews.

All reviews for this product, most recent first.

About HUNT.

Hunt Bike Wheels are a team of talented, passionate riders with a wealth of industry experience, and set out to bring you the latest, most practical, forward-thinking technology in all things round.

Our mission is to serve devoted riders with the highest performing products, backed by best-in-class rider support.

All of our wheels are built and finished by hand, inclusive of a full quality control inspection.