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ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub

ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub

MT-103R

Product Details

Built for Lightweight Boost Dirt Jump Performance

Designed for modern dirt jump wheel builds, the MT-103R combines a 6-bolt J-bend design with 12×148mm rear spacing and a single-speed freehub system. Its 4-pawl, single-tooth engagement provides responsive power transfer, while five S&S steel bearings support smooth and stable rotation. Available in 24H, 28H, 32H, and 36H configurations, the rear hub weighs approximately 303.7g.
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub

Reliable 4-Pawl Engagement System

4-Pawl Single-Tooth Structure for Consistent Power Transfer

The MT-103R features a 4-pawl single-tooth engagement system designed for smooth and reliable drivetrain response. The optimized engagement mechanism delivers stable power transfer while maintaining durability for repeated jumps, landings, and high-impact riding conditions.

ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub

Lightweight Boost Single-Speed Design

303.7g Lightweight Rear Hub for Dirt Jump Builds

Built with an AL6061-T6 aluminum alloy hub shell, AL7075 aluminum side components, and a precision-machined lightweight structure, the MT-103R reduces unnecessary weight while maintaining the strength required for dirt jump and slopestyle riding. The 12×148mm Boost spacing provides improved wheel stiffness and compatibility with modern frames.

Technical Specification

#
Type
Details
1
Hub Shell Material
AL6061-T6 aluminum alloy(100% Forging)
2
Axle Material
AL7075 aluminum alloy(100% Forging)
3
End Cap Material
AL7075 aluminum alloy(100% Forging)
4
Disc Brake Interface
MTB / Dirt Jump 6-Bolt Disc Brake J-Bend Hub
5
Hole Count
R-24H/28H/32H/36H
6
Hole Diameter
3/8*14G
7
Surface Color
Sandblasted anodized black
8
Freehub Body Color
Anodized Black
9
Bearing Configuration
5 × S&S Steel Bearings
10
Hub Structure
4 pawls single-tooth
11
Freehub Body Standard
Single-speed tower base
12
O.L.D.
M12*148MM
13
Weight
303.7g±5g
ARC MT-103R Boost Single-Speed Dirt Jump Rear Hub

Precision Materials.

Dirt Jump Configuration.

Built with lightweight aluminum components for modern dirt jump and single-speed wheel builds.

✓ High-Strength Aerospace-Grade 7075 Aluminum Alloy Axle & Freehub Body
Provide reliable stiffness and durability for demanding dirt jump riding.

✓ 4-Pawl, Single-Tooth Engagement System
Delivers responsive engagement and consistent power transfer.

✓ Single-Speed Freehub Design
Purpose-built for compatible single-speed drivetrain configurations.

✓ 12×148mm Rear Platform
Provides a wide and stable rear hub configuration for compatible frames.

✓ Flexible J-Bend Configuration
Available in 24H, 28H, 32H, and 36H with 6-bolt disc mounting, S&S steel bearings, and a 303.7g weight.

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