Free 2-Day Shipping on Orders Over $50*

Detail Images

  • Mercury Wheels - Back
  • Mercury Wheels - X3 27.5 Plus Boost Wheelset - Black, 15x110/12x148
  • Mercury Wheels - Back -

Current Color

  • Mercury Wheels - X3 27.5 Plus Boost Wheelset - Black, 15x110/12x148

Mercury Wheels X3 27.5 Plus Boost Wheelset

sale from $335.58 $799.0058% Off

Free 2-Day shipping on orders over $50*

Select your style & size:

Select options
  • Select options
    • Black, 15x110/12x148, HG
      sale $395.58
    • Black, 15x110/12x148, XD
      sale $335.58

    4 Reviews


    When "wide" is an understatement.

    There are some virtues to the five-inch tires on fat bikes, including traction, plushness, the joy of riding not only off-road but off-trail. Unfortunately, those virtues come with the vice of a ride that feels plodding compared to a jittery, low-travel XC bike. Mercury Wheels' X3 27.5 Plus Boost Wheelset goes some way toward bridging the gap between those two extremes, combining an extra-wide footprint with Boost axles to complement today's breed of high-clearance, all-mountain framesets. These bikes tend to have aggressively proportioned rear triangles with slacked-out front ends, and the X3 27.5 Plus Boost wheels max out that dynamism with equal parts torsional stiffness and plus-sized traction. The only limit is a given frame's tire clearance.

    The rims consist of all-mountain-inspired, lightweight, stiff aluminum that lives up to the trail-furniture-be-damned attitude that their efficient ride quality inspires. While alloy wheels aren't as stiff as carbon, a 40mm external width and the improved spoke bracing angle of Boost axles conspire to reduce flex while climbing and barreling through lines. This is a full 5mm wider than the standard X3 rim, and the internal width of 35mm means the Plus rims can just about swallow their skinnier counterparts. That width also lets plus-sized tires plump out to their preferred girth, allowing for a larger contact patch and lower PSI.

    • An all-mountain wheelset that maximizes traction
    • Rim width tailored for plush, plus-sized tires
    • Stiff Boost thru-axles reduce torsional flex
    • Mercury Wheels is the self-sponsored racer's best friend
    • Item #MCW000E

    Tech Specs

    Rim Material
    Wheel Size
    Tire Type
    clincher, tubeless
    Rim Depth
    17 mm
    Rim Width
    [internal] 35 mm, [external] 40 mm
    Brake Compatibility
    6-bolt disc
    Front Axle
    15 x 110mm Boost thru-axle
    Rear Axle
    12 x 148mm Boost thru-axle
    Sapim Race
    Spoke Count
    28 / 28
    Wheel Bag Included
    Claimed Weight
    [set] 1,838 g
    Recommended Use
    all-mountain, enduro
    Manufacturer Warranty
    2 years

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Not just for Plus tires

    • Familiarity: I've used it once or twice and have initial impressions

    Just got these delivered and put them on my Whyte T-130 last night. I was running WT Minions on 25mm internal I9's and the ride just felt too squirmy and wobbly at low speeds with the rounded profile but I love the traction and larger volume of the tires. Despite everyone telling me these were too wide I decided to give them a try due to their great price, and holy s*** what a transformation. Thing handled like it was on rails, never experienced this much traction on a trail bike. Wheels and hubs seem to be great quality, with a quiet hub buzz compared to my I9's. All in all great product, even better price. They were a breeze to set up ghetto tubeless with gorilla tape. If your frame is boosted, don't let anyone tell you they are too wide. I could probably go up to 2.8 in the rear still before getting close to rubbing.

    What a wheel set!!!

    • Familiarity: I've used it several times

    I bought a new Scott Genius 710 PLUS and needed to replace the ho hum wheels that came on the bike. Since, I bought a set of Mercury's road wheels and really liked them I decided to see what type of MTB wheels they had. I didn't have enough $$ for a set of carbons, so their X3 Plus wheels were perfect! I pulled the trigger on them, then read this "nail on the head" review...