Responsive Engagement. Durable Construction. Built for the Trail.
The ARC MT-051F/R BOOST is designed for mountain bikers seeking reliable engagement and confident off-road performance. Featuring a 6-pawl freehub system, aluminum alloy construction, and sealed bearings, this hub set offers a dependable foundation for MTB wheel builds.
Weighing approximately 400 g per set (142 g front / 258 g rear), it combines a 28H straight-pull spoke design, Boost thru-axle spacing, and 6-bolt disc brake compatibility.
Durable Aluminum Construction
Built with an AL6061-T6 aluminum alloy hub shell and AL7075-T6 axle components, offering a strong and practical construction for mountain biking.
6-Pawl Engagement System
The 6-pawl freehub mechanism delivers responsive pedal engagement and reliable power transfer for climbing, trail riding, and everyday off-road use.
Boost MTB Compatibility
Designed for 15×110 mm front and 12×148 mm rear Boost thru-axle setups, making it suitable for compatible modern mountain bikes.
Straight-Pull Wheel-Build Design
Featuring 28H straight-pull spoke configurations, sealed bearings, and a 6-bolt disc brake interface for compatible MTB wheel builds.
The ARC MT-051F/R BOOST is a practical choice for riders upgrading their MTB wheels with reliable engagement, durable construction, and modern Boost compatibility.

| Specification | Details |
|---|---|
| Brand | ARC |
| Model | MT-051F/R BOOST |
| Product Type | MTB Disc Brake Hub Set |
| Application | Mountain Bike / MTB |
| Hub Position | Front and Rear |
| Hub Shell Material | AL6061-T6 Aluminum Alloy |
| Axle Material | AL7075-T6 Aluminum Alloy |
| Surface Finish | Anodized |
| Brake Type | Disc Brake |
| Rotor Mount | 6-Bolt |
| Hub Spacing Standard | Boost |
| Axle Type | Thru-Axle |
| Front Hub Spacing | 15 × 110 mm |
| Rear Hub Spacing | 12 × 148 mm |
| Spoke Type | Straight-Pull |
| Spoke Holes | Front 28H / Rear 28H |
| Engagement System | 6 Pawls |
| Freehub Options | Shimano HG / Micro Spline (MS) / SRAM XD |
| Bearing Type | Sealed Bearings |
| Front Bearings | 2 Sealed Bearings |
| Rear Bearings | 4 Sealed Bearings |
| Front Hub Weight | 142 g ± 5 g |
| Rear Hub Weight | 258 g ± 5 g |
| Total Set Weight | 400 g ± 5 g |
| Color Options | Black / White |
| Country of Origin | Jiangsu, China |
| Set Package Type | 1 Set (Front + Rear) |
| Package Dimensions (Per Set) | Approx. 22 × 17 × 9 cm |
| Package Gross Weight (Per Set) | Approx. 0.8 kg |
| Single Hub Package Type | 1 Hub (Front or Rear) |
| Single Hub Package Dimensions | Approx. 22 × 9 × 9 cm |
| Single Hub Package Gross Weight | Approx. 0.6 kg |
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