ARC MT-009R 28H Body Boost 148MM Rear
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ARC MT-009R Boost Rear Hub (28H, 148x12mm)
Core specs (what matters)
-
Boost spacing: 148x12mm
- Modern MTB standard for rear hubs
- Gives better wheel stiffness and tire clearance
- Must match your frame (non-boost = won’t fit)
-
28H (28 holes)
- Lighter wheel build
- Common for XC / trail
- Slightly less strong than 32H for heavy/enduro abuse
-
Aluminum alloy body
- Typically 6061 body + 7075 axle/freehub
- Good balance of weight and durability
Engagement system (this is the key selling point)
- 6 pawls, 3-tooth phased system
- Around 114 engagement points (clicks per revolution)
What that means:
- Faster engagement than cheap hubs (which might have 18–36 points)
- Pedal → power transfer feels more immediate
- Noticeable upgrade for:
- Technical climbs
- XC acceleration
- Trail riding responsiveness
Bearings & build
- Sealed cartridge bearings (usually 4 in rear)
- Smooth rolling and relatively low maintenance
- Easy to replace compared to cup-and-cone systems
Compatibility
- Fits:
- Shimano HG (8–12 speed)
- SRAM XD / XDR
- Shimano Micro Spline (depending on version)
-
6-bolt rotor mount
- Works perfectly with your Baradine 180mm rotor
⚖️ Real-world performance
Pros
- Very affordable upgrade
- High engagement for the price
- Loud, satisfying hub sound (if you like that)
- Good for XC / light trail / budget enduro builds
Cons
- Not as durable as premium hubs (DT Swiss, Hope, etc.)
- Pawl system can wear faster under heavy torque
- Bearings may need replacement sooner under harsh conditions
Honest verdict
This hub sits in the “budget performance” sweet spot:
- ✔ Great if you want high engagement without spending big money
- ✔ Ideal for XC, trail, and general MTB use
- ✖ Not the best choice for hardcore enduro/downhill abuse
Critical compatibility check
Before buying, confirm:
- Your frame = Boost 148mm (12mm thru axle)
- Your rim = 28H (must match hub)
- Your drivetrain freehub type (HG / XD / MS)
Bottom line
The ARC MT-009R is basically:
???? A cheap hub that punches above its price thanks to fast engagement
It’s a solid upgrade if you’re coming from a low-end stock hub, but not a “buy once, ride forever” component.
