Pushing the boundaries of rim-brake aerodynamics to the absolute limit.
52 Deep | 27 Wide Ext | 19 Wide Int | 1548g (Wheelset) | CeramicSpeed
The Purpose
The fastest rim-brake wheels we've ever made, using 'Aerodynamicist' profiles as first used on our Limitless range. Ready to fly past the competition, whether road races, time trials or triathlons. We've been able to take the principles found during the Limitless research project (widening profiles below the edge of the rim to improve performance and stability across multiple yaw angles), and apply these to rims that make the absolute most of the space offered inside a conventional caliper brake.
Wind tunnel proven against world-leading wheels. See for full technical details of our wind tunnel testing methodology, including data/graphs and the full range of wheels we tested against.
Designed by HUNT's in-house engineering team.
Fitted with CeramicSpeed's world-renowned low-friction bearings.
RESULTS
KEY DESIGN PARAMETERS
We knew we had to work within the confines of conventional caliper brakes, and so designed around a 19mm internal rim width optimised for a 25c tire (but will of course work without compromise with both 23c and 28c tires). Naturally, as with all of our rims, they feature a hooked tire retention design for safety, and are both fully ETRTO-compatible and tubeless-ready.
RIM PROFILE DESIGNS
As learned from our Limitless Research project & from consistent wind tunnel time across the past 2 years, we know that an optimum aerodynamic benefit for a drop-bar bike is yielded from widening rim profiles. The reasons for this is that it allows for a far more 'blunted' spoke bed area, which (depending on which part of the wheel you're looking at) is both the leading and trailing edge. The benefits of blunted spoke bed areas revolve primarily around the predictable airflow, with the wind 'hugging' the rim as it passes across it (as opposed to older style V-shaped rims, which would create turbulence in the form of stalls). The wider profile ensures the flow stays attached to the surface as long as possible before the point of separation, which is key as yaw angles increase.
TESTING & RESULTS
We conducted our testing in much the same manner as was performed for the 48 Limitless Aero Disc , however using CFD we were able to ascertain which prototype profiles were fastest before we headed over to the tunnel. Accordingly, we took a single final prototype shape of each depth to the wind tunnel (compared to the 5 and then 3 for the Limitless project). We tested against top competitors from across the world, using Continental's GP5000 as the control tire for all tests. Yaw angles were ±20 degrees.
As was expected, we have designed 3 rim profiles that offer exceptionally competitive aerodynamic performance, with the 82 coming in as the very fastest. The 52 and 62 are both incredibly competitive, in an area of bicycle aerodynamics that has been hotly contested and innovated within for over 15 years. As with previous testing, we have calculated positions based on Mavic's own WAD (Wind Average Drag) power distribution.
The Purpose
The fastest rim-brake wheels we've ever made, using 'Aerodynamicist' profiles as first used on our Limitless range. Ready to fly past the competition, whether road races, time trials or triathlons. We've been able to take the principles found during the Limitless research project (widening profiles below the edge of the rim to improve performance and stability across multiple yaw angles), and apply these to rims that make the absolute most of the space offered inside a conventional caliper brake.
Wind tunnel proven against world-leading wheels. See for full technical details of our wind tunnel testing methodology, including data/graphs and the full range of wheels we tested against.
Designed by HUNT's in-house engineering team.
Fitted with CeramicSpeed's world-renowned low-friction bearings.
RESULTS
KEY DESIGN PARAMETERS
We knew we had to work within the confines of conventional caliper brakes, and so designed around a 19mm internal rim width optimised for a 25c tire (but will of course work without compromise with both 23c and 28c tires). Naturally, as with all of our rims, they feature a hooked tire retention design for safety, and are both fully ETRTO-compatible and tubeless-ready.
RIM PROFILE DESIGNS
As learned from our Limitless Research project & from consistent wind tunnel time across the past 2 years, we know that an optimum aerodynamic benefit for a drop-bar bike is yielded from widening rim profiles. The reasons for this is that it allows for a far more 'blunted' spoke bed area, which (depending on which part of the wheel you're looking at) is both the leading and trailing edge. The benefits of blunted spoke bed areas revolve primarily around the predictable airflow, with the wind 'hugging' the rim as it passes across it (as opposed to older style V-shaped rims, which would create turbulence in the form of stalls). The wider profile ensures the flow stays attached to the surface as long as possible before the point of separation, which is key as yaw angles increase.
TESTING & RESULTS
We conducted our testing in much the same manner as was performed for the 48 Limitless Aero Disc , however using CFD we were able to ascertain which prototype profiles were fastest before we headed over to the tunnel. Accordingly, we took a single final prototype shape of each depth to the wind tunnel (compared to the 5 and then 3 for the Limitless project). We tested against top competitors from across the world, using Continental's GP5000 as the control tire for all tests. Yaw angles were ±20 degrees.
As was expected, we have designed 3 rim profiles that offer exceptionally competitive aerodynamic performance, with the 82 coming in as the very fastest. The 52 and 62 are both incredibly competitive, in an area of bicycle aerodynamics that has been hotly contested and innovated within for over 15 years. As with previous testing, we have calculated positions based on Mavic's own WAD (Wind Average Drag) power distribution.
Key Features
The most aerodynamically capable rim brake line-up we've ever offered.
- Rims | Aerodynamicist rim profiles, developed from the ground up. Toray T700/T800 carbon-fibre. Unidirectional sidewalls with 3K weave bed and spoke areas, Griptec basalt ceramic fibre brake-track for excellent braking and durability. Tubeless-ready for lower weight, rolling resistance and better puncture protection.
- Tires | 19.5mm rim bed optimised for superior aerodynamic performance with a 25-28c tubeless tire, but also very capable with a 23c. Also works excellently with clincher tires and tubes.
- Hubs | Race Season Sprint straight-pull super-light, 15mm diameter 7075-T6 axle. Circular dropout interface steps for added stiffness. 3x treble tooth pawls resulting in just 7.5 degrees of engagement for instant acceleration. Steel spline insert to protect the cassette body.
- CeramicSpeed Bearings | CeramicSpeed clearly need little introduction. As you know, CeramicSpeed bearings are renowned for their low rolling resistance, and are chosen by the top international athletes and teams.
- Elliptical Wing Spokes | Pillar Wing 20 spokes with aerofoil profile. Tested and proven to provide aerodynamic advantage over flat or bladed options both from Pillar and other competitors.
- QR | Hunt Race Season super-light with heat-treated alloy/brass cam plate actuation and stainless steel springs.
- Weight | 1548g (52/52)
- UCI Approved
Full Specs
Rims
- Aerodynamicist rim-profiles, developed from the ground up & wind tunnel proven
- Toray T700/T800 unidirectional and 3K weave carbon-fibre with 3K weave bed and spoke areas.
- 27mm outer and 19.5mm inner width ideal for 23-45mm tire widths
- 52mm deep super-wide rounded aero section
- Tubeless-ready
- Griptec basalt ceramic fibre brake-track. Please note: We are not able to control other brands brake pad compounds and we cannot test every possible brake pad so please use only our HUNT Brakco Griptec carbon specific rim brake pads with these wheels. Two pairs of pads are included with your wheels and further sets can be ordered from here. We chose the Brakco Griptec pads because they outperform a lot of the market leaders’ best selling compounds in both dry and wet laboratory conditions.
- Matt black base finished with gloss black and white contrasting graphics.
Spokes
- Pillar Wing 20 with Aerofoil profile
- 18 front & 24 rear
- Aero Butted 2.0-2.2/0.95-2.0 then PSR section is 2.2
- Straight-pull for excellent torsional strength and direct power transfer
- Cold drawn from high grade T302 (18/10) stainless steel wire by Sandvik Sweden
- Patented Pillar Spoke Re-enforcement, butted again just before the spoke head providing more durability in high stress area.
- Black stainless treatment
Nipples
- Alloy square body for external adjustment and square head for easy internal adjustment/tensioning.
- 16mm length with washer for a strong connection to the spoke added durability.
- 14 gauge
- Black anodized finish
Tires Info
- Maximum tire pressure for this rim is 100psi when used with 25-28mm tires. 100 psi is more than enough for any rider on road. Click here to listen to a podcast exploring the science of why lower pressures were found to be faster by pro teams.
- Maximum tire pressures for other tire sizes: 30mm - 32mm do not exceed 70psi, 33mm do not exceed 50psi, 35-45mm do not exceed 45psi, 45-50mm do not exceed 40psi.
- Please do not exceed the maximum pressure stated on your tire.
- Suitable for tires from 23mm up to 45mm wide.
Front Hub
- Forged and CNC’d 6061-T6 heat treated aluminium alloy body.
- 7075-T6 aluminium alloy axles.
- Circular machined dropout interface steps for added stiffness
- Polished anodized black finish with laser graphics.
Rear Hub
- 7075-T6 heat-treated aluminium alloy freehub body.
- Steel Spline Insert freehub body reinforcement provides excellent durability against cassette sprocket damage to the freehub often seen on standard alloy freehub bodies.
- 3x treble tooth pawl engagement for instant acceleration - 7.5 degrees engagement.
- All freehub standards accounted for, including:
- Shimano/SRAM
- Campagnolo
- SRAM XD Driver
- SRAM XDR Driver
- Circular machined dropout interface steps for added stiffness.
- Forged and CNC’d 6061-T6 heat treated aluminium alloy body.
- 7075-T6 aluminium alloy axles.
- Polished anodized black finish with laser graphics.
Bearings
- Industry leading CeramicSpeed hybrid ceramic bearings.
- 3 to 5 times longer than other ceramic bearings on the marketing, and 10 times more than standard steel bearings.
- CeramicSpeed bearing balls are of the highest quality Grade 3 Silicon Nitride, featuring the highest achievable surface finish and roundness. 15% harder, take 99% higher loads and are more than 100% smoother than other ceramic balls typically seen in the market. The smoothness and the hardness of the CeramicSpeed balls is unique
- 6 year warranty
Quick-Releases
- HUNT Super-light Race Season design, only 33g front and 37g rear.
- 7075-T6 heat-treated alloy lever, head and nut.
- Brass cam plate actuation.
- 1000kgf tested high-strength cro-moly spindles.
- Corrosion resistant stainless steel springs.
- Polished anodized black finish with laser graphics.
Warranty, HUNT Rolling Road Tests & Weight Limits
A full 3 years (6 years on CeramicSpeed bearings) 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.
All HUNT wheels models have to pass our harsh cobbled-rolling-road tests for rider weight limits, please see here for more details. 240lbs is the upper recommended rider weight limit for these wheels. Please include the weight of any luggage in your total rider weight when choosing the correct wheels. If a rider is over 200lbsthen an experienced bike mechanic should check the wheel regularly and it is advisable to use tires at max 95psi as this will reduce the fatigue on the wheelset. We are cyclists ourselves and do of course go above and beyond to offer excellent service if you ever do experience any issues. We carry full spares at very reasonable prices and offer complete support.
60 Day Ride & Return Period. We are certain you'll be impressed by the acceleration, low-weight, speed and durability of our wheels. We are cyclists and as such strive to offer class leading service and support. Buy with confidence, if for any reason you wish to return the wheels for a full refund of your order you can do so up to a full 60 days after you receive them whether they have been ridden or not.
NOTE: We are not able to control other brands brake pad compounds and we cannot test every possible brake pad so please use only our HUNT Brakco Griptec carbon specific rim brake pads with these wheels. Two pairs of pads are included with your wheels and further sets can be ordered from here. We chose the Brakco Griptec pads because they outperform a lot of the market leaders’ best selling compounds in both dry and wet laboratory conditions.
Tubeless Tire Options
We can supply tubeless tires (including sealant) with your wheels which are also designed to work excellently with clincher tires and tubes.
Maximum tire pressure for this rim is 100psi when used with 25-28mm tires. Maximum tire pressures for other tire sizes: 30mm - 32mm do not exceed 70psi, 33mm do not exceed 50psi, 35-45mm do not exceed 45psi, 45-50mm do not exceed 40psi. 100psi is more than enough for any rider on road. Please do not exceed the maximum pressure stated on your tire. Click here to listen to a podcast exploring the science of why lower pressures were found to be faster by pro teams.
 | Schwalbe Pro One Tubeless Tires- 25, 28 or 30mmThe Schwalbe Tubeless road tires consistently win plaudits from journalists and customers alike. We have been testing them for a long time and have been very impressed. The One Pro's are Schwalbe's top of the range tires and feature their triple compound tread so you get extremely low rolling-resistance combined with excellent grip and durability. |
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.
