XT WH-M8120 29in Boost Wheel
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XT WH-M8120 29in Boost Wheel balances lightweight handling, durable construction, and fast trail response
What Our Gearhead® Experts Are Saying:
"This wheelset is my go-to for aggressive trail and enduro. The tubeless setup is painless, it’s strong enough for big hits, and the engagement is better than expected. Drop it on any bike and you get instant handling confidence without paying carbon prices."
XT WH-M8120 29in Boost Wheel harnesses Shimano’s engineering for trail riders who demand reliable, responsive performance on technical descents and fast singletrack. The lightweight aluminum rim, offset spoke lacing, and centerlock compatibility deliver a stiff, efficient wheel that tracks through rough lines. Tubeless setup is fast, supporting lower pressures for extra grip and fewer flats. Paired with a Micro Spline freehub, this wheel is ready for the latest 12-speed drivetrains—so you can stomp the climbs as hard as the descents. Double-butted, J-bend spokes offer lasting durability for seasons of laps, and boosted axle spacing increases stability, so you always feel in control.
Details
- Tubeless, lightweight aluminum wheel delivers pinpoint handling and reliable speed
- Offset spoke lacing and wide flange hubs bring lateral stiffness for cornering
- 28 double-butted, J-bend spokes balance strength and easy at-home truing
- Micro Spline freehub ready for 12-speed drivetrains and 10t top gears
- Centerlock disc mount makes rotor swaps quick and alignment perfect
- Boost axle spacing maximizes compatibility and front-end rigidity
- Low claimed weight (1016g per wheel) feels fast and flickable on all terrain
- Designed for trail, enduro, all-mountain, and aggressive XC riding
- Item #SHIU184
- Rim Material
- aluminum
- Wheel Size
- 29in
- Rim Type
- Hooked
- Rim Depth
- 19.8mm
- Rim Width
- [external] 34.7mm, [internal] 30mm
- Brake Compatibility
- centerlock disc
- Hubs
- Micro Spline
- Front Axle
- 15 x 110mm boost thru-axle
- Rear Axle
- 12 x 148mm boost thru-axle
- Spokes
- double butted, J-bend
- Spoke Count
- [front, rear] 28
- Claimed Weight
- [single] 2lb 3.8oz (1016g)
- Manufacturer Warranty
- 1 year
- Activity
- mountain biking
Reviews
Q&A
What do you think about this product?
Overall Rating
3.5 based on 2 ratings
Review Summary
Fits True To Size
Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.View
Selecting an option will reload the available reviews on the pageApril 25, 2024
Beware of Durability
- Familiarity:
- I've put it through the wringer
- Height:
- 5' 11"
- Weight:
- 178
I love Shimano components and have had a long history of using Shimano hubs for 30+ wheelsets across every type of bike. This might be the last MTB hub/wheelset that I use from them. After this winter I pulled my bike down expecting minimal maintenance barring some lubing and bearing checks. In the stand the freehub worked great. At the end of the first ride I started to get me pedal feedback and chain slack. At home the freehub was definitely the source of the issue. Taking the wheel apart is not easy; Shimano have made a simple system very complex. I never fully diagnosed the issue, and my local shop was unable to figure anything out but the springs and internal ratchets in the freehub body seem to be the issue. It's documented by others that it can be a problem but seems to be on a hub-by-hub basis. Can't recommend the wheel.
January 3, 2024
Great Wheelset
- Familiarity:
- I've put it through the wringer
- Height:
- 6' 1"
- Weight:
- 170
They are pretty sweet wheels. Build quality is exceptional. They feel very solid, stiff, and lighter than they actually are. The hub engagement is great too. Maxxis 2.5 tires sealed up very well with just a floor pump. Big fan! Great wheels for the price.
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Shimano XT WH-M8120 29in Boost Wheel reviewLightweight tubeless aluminum mountain bike wheelsDurable 29in wheels for aggressive trail ridingMicro Spline 12-speed freehub for smooth shiftingCenterlock disc brake compatibility for easy installation28 double-butted spokes for enhanced wheel strengthBest wheels for downhill and enduro mountain bikingShimano Deore XT performance for serious bikersTrail-ready wheels with exceptional handlingBoost axle compatibility for modern mountain bikesRim width designed for stability on rough terrainAffordable high-performance mountain bike wheelsLearn more about XT WH-M8120 29in Boost Wheel