THE SECOND IN A LINE OF MASON X HUNT COLLABORATIVE EFFORTS. THE GO-TO 650B/27.5" WHEELS FOR YOUR GRAVEL/BIKEPACKING RIG

19 Deep | 29 Wide Ext | 25 Wide Int | 1594g

The Purpose

The second MASON x HUNT collaboration, bringing go-anywhere capabilities to bikes like the fast, fun and highly-versatile MasonCycles.cc Bokeh. The new breed of Adventure Sport focused bikes have the ability and attitude for those fun trail thrashes and bike-packing adventures, whilst not compromising anything for fast-far road days. Read More

The opportunity to open up your riding comes from bikes which have geometry designed to ride excellently with both 700c or 27.5" (650b) wheels. This combination works thanks to the extra volume in a 2" x 27.5" tire, providing an almost identical external tire diameter to a normal road sized 700c wheel with a 33mm tire, leaving the bike geo unchanged. What was needed was a bike that could accommodate the extra tire width, while still running road groupsets, geo and components. That is exactly what Mason have created, and perfected with their incredible eye-for-detail.

We’re delighted to have designed the wheels for the job. These wheels will perfectly compliment other gravel bikes with dual 650b/700c compatibility. Oh, and if you are looking for a 700c wheelset for your drop bar adventure/go-anywhere bike, then our 4 SEASON GRAVEL DISC would be well worth a look. Read Less

Key Features

Smaller Wheels, Bigger Tires, More Opportunities

Rims | 650b Super-wide (29mm external, 25mm internal) 6066-T6 (+34% tensile strength vs 6061-T6) Heat treated. Disc specific. Asymmetric for balanced spoke tensions and a highly-durable wheel build. ETRTO 584x25.
Tires | Tubeless-ready for lower weight & rolling resistance, featuring H_LOCK bead-seat for easy and secure tubeless installation. Also works excellently with clincher tires and tubes.
Hubs | HUNT 4 Season Disc J-bend spoke hubs with extra bearing shielding. 10 degree FastEngage 4-pawl freehub, with H_CERAMIK coating for enhanced durability. Centre-lock disc mount. Please note: If you require a 6 bolt adaptor you can purchase separately here
Axles | Easily adaptable & we fit them for you. Fit all current axle sizes and are easy to change. Click here to see all axle sizes.
Hand-built | All of our wheels are built and finished by hand, inclusive of a full quality control inspection.
Included | Tubeless tape & valves, spare spokes, axle adapters (please fill in the simple form after checkout to select your required size).
Weight | 1594g
See the full specs here

The Experts' View

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Full Specs

Rims

Tubeless-ready – designed to work excellently with normal clincher tires and tubes or tubeless tires. HUNT Black Shield tubeless rim tape and valves included.
Hooked
H_Lock bead-seat up-kicks for easy and secure tubeless installation.
6066-T6 (+34% tensile strength vs 6061-T6) heat-treated aluminium alloy
Asymmetric to balance spoke tensions.
Disc-specific tubeless-ready profile.
29mm outer and 25mm inner width ideal for 35-50mm+ tire widths.
19mm depth
Matt black anodized finish with laser etched graphics for excellent durability.

Spokes

J-bend cold drawn.
Made from high grade T302 (18/10) stainless steel wire by Sandvik Sweden.
Triple butted 2.0-1.6-2.0 (then 2.2 at the head for the patented Pillar Spoke Re-enforcement).
28 spokes laced 2 cross front and rear.
Black stainless treatment.

Nipples

Brass for anti-corrosion resistance.
Square body for external adjustment and hex head for easy internal adjustment/tensioning.
12mm length.
14 gauge.
Black finish

Tires Info

Maximum tire pressure for this rim: 35mm do not exceed 50psi, 45mm do not exceed 45psi, 45mm+ do not exceed 40psi.
The maximum pressure of your tire may be lower than the maximum pressure for the rim - never exceed the maximum pressure written on the side of your tire.
Suitable for tires from 35mm to 65mm wide (always check compatibility with your tire manufacturer).
Suitable tubeless road, gravel and CX tires are available from a huge range of companies including Schwalbe, Hutchinson, Panaracer, Maxxis, WTB and many more.

Axle Sizes

These wheels are available with all 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, 15x100mm Thru-Axle, 9x100mm Thru-Axle, Quick Release 9x100mm
Rear: 12x142mm Thru-Axle, 12x135mm Thru-Axle, 10x135mm Thru-Axle, Quick Release 9x135mm

If you are unsure what size your axles are don't worry it also includes the option to tell us your bike model and we will find out and then fit the correct axles, plus we're happy to change them later at our cost if you don't quite get it right. Please note; this form is shown after you have completed your order.

Front Hub

Forged and CNC’d 6061-T6 heat treated aluminium alloy body.
7075-T6 aluminium alloy axles.
Center-lock disc mount. If you require a 6 bolt adaptor you can purchase separately here
Polished anodized black finish with laser graphics.

Rear Hub

7075-T6 heat-treated aluminium alloy freehub body.
H_CERAMIK freehub body reinforcement coating provides excellent durability and protects against cassette sprocket damage to the freehub often seen on standard alloy freehub bodies.
4 pawl, 36 tooth FastEngage freehub, with an engagement angle of just 10 degrees
All freehub standards accounted for.

Forged and CNC’d 6061-T6 heat treated aluminium alloy body.
7075-T6 aluminium alloy axles.
Center-lock disc mount. If you require a 6 bolt adaptor you can purchase separately here
Polished anodized black finish with laser graphics.

Bearings

Super smooth precision bearings with proprietary waterproof grease specially selected for even the worst weather.
Sealed cartridge replaceable units.
Dual full-contact seals.

Warranty, HUNT Rolling Road Tests & Weight Limits

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.

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 297lbs (system weight – total weight of fully kitted up rider, bike and luggage). If a rider is over 253lbs then an experienced bike mechanic should check the wheel regularly and it is advisable to use minimum 30mm tires at max 70psi 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. Please note we cannot offer refunds on wheels that have suffered from crash damage but do offer a crash replacement discount.

Reviews

Bike Magazine and Website Experts' Views

Road.cc 9/10

"For me, Hunt has hit the sweet spot in the middle of the 650b wheelset Venn diagram covering price, support and performance."

In the Box

Contents

HUNT Black Shield 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
Tubeless Valves
Spare of each spoke plus nipples
Quality control card signed by your wheel builder

Road.cc 9/10 Review - Mason X Hunt 650b Adventure Sport Disc Wheelset

Road.cc 9/10 Review

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