Discipline: Tandem

  • XMR+ Boost Front Hub

    XMR+ Boost Front Hub

    The White Industries XMR+ Front Hub is a lightweight, precision-machined Boost 6-bolt disc hub built for modern mountain and gravel bikes. We machine, assemble, and inspect every hub in our Petaluma, California facility. As a result, the XMR+ delivers smooth performance, lasting durability, and premium American craftsmanship.

    The XMR+ traces its heritage back to the original White Industries Ti Front Hub introduced in 1992. For more than 30 years, we’ve refined our hub designs through real-world riding and continuous innovation. Today, every XMR+ carries the same proven DNA: simple engineering, dependable performance, and long-lasting reliability.

    Designed for Boost-spaced forks, the XMR+ uses the industry-standard ISO 6-bolt disc rotor interface. Therefore, it delivers confident braking performance for aggressive trail riding, backcountry adventures, and fast gravel routes. At the same time, its low weight, clean profile, and robust construction make it an excellent choice for riders who want strength without unnecessary weight.

    Two premium Enduro sealed cartridge bearings keep the XMR+ rolling smoothly mile after mile. They also reduce maintenance, allowing you to spend more time riding and less time servicing your bike.

    Choose from four spoke drilling options, seven anodized colors, and two axle configurations to create a custom wheelset that matches your bike and riding style. Whether you’re building a lightweight gravel bike or a capable trail bike, the XMR+ delivers premium Made in the USA performance built to last.

    Features

    • Lightweight Boost front hub for mountain and gravel bikes
    • Boost spacing for modern suspension forks
    • Industry-standard ISO 6-bolt disc rotor mount
    • Precision CNC-machined in Petaluma, California
    • Over 30 years of White Industries hub design and manufacturing expertise
    • Two premium Enduro sealed cartridge bearings for smooth, reliable performance
    • Simple, durable, and easy-to-service design
    • Available in four spoke drilling options
    • Offered in five colors
    • Available in two axle configurations
    • Made in the USA
  • MR30 Spindles

    MR30 Spindles

    Product Description

    These are replacement spindles for our MR30 series cranks that use a 30mm spindle.  Refer to the chart below to see which spindle will work for your configuration.

    Specs

    • Made from 2024-T365 aluminum
    • Anodized black, then bearing surfaces precision ground
    • Comes in four lengths

    Compatibility

    • Compatible with White Industries MR30 series crank arms
    • Not compatible with any other brands of cranks
    • R30/G30 spindle is for 68mm or 86mm bottom bracket shells
      • Spindle 126.2mm total length
    • M30/A30 spindle is for 68mm/73mm or 86mm/92mm bottom bracket shells
      • Spindle is 131.2mm total length
    • Fat Bike -100mm spindle is for 100mm bottom bracket shells only (will not fit 120mm shells)
      • Spindle is 158.2mm total length
      • For 177mm rear axle spacing with 66.5mm chainlines
    • Fat Bike -100mm/120mm spindle is for 100mm or 120mm bottom bracket shells
      • Spindle is 178.2mm total length
      • For 197mm rear axle spacing with 76.5mm chainlines

    M30/A30/R30/G30 Crank Comparison Chart

    Mountain

    M30

    		 Adventure

    A30

    		 Road

    R30

    Gravel

    G30

    Crank arm

    		 M30

     Mountain arms

    		 R30

    Road arms

    		 R30

    Road arms

    M30

    Mountain arms

    Spindle

    		 M30

    Mountain spindle

    		 M30

    Mountain spindle

    		 R30

    Road spindle

    R30

    Road spindle

    1x chainline

    (3mm offset ring, facing inward)

    		 49mm 49mm 46.5mm

    46.5mm

    1x Boost chainline

     (0mm offset/flat ring)

    		 52mm 52mm 49.5mm

    49.5mm

    1x chainline

     (3mm offset ring flipped outward) 

    		 *55mm *55mm 52.5mm

    52.5mm

    2x chainline

    (measured between the 2 rings)

    		 47.5mm 47.5mm 45mm

    45mm

    Q factor

    		 176mm 163.5mm 158.5mm

    171mm

    Width between inside of arms

    (for chainstay clearance)

    		 149.6mm 137mm 132mm

    144.6mm

    Weight

    		 575g

    (175mm w/spindle)

    		 565g

    (170mm w/spindle)

    		 560g

    (170mm w/spindle)

    570g

    (175mm w/spindle)

    BB shell widths

    		 68mm/73mm

     or 

    86mm/92mm

    		 68mm/73mm

     or 

    86mm/92mm

    		 68mm or 86mm

    68mm or 86mm

    **OBW

     (outer bearing width)

    		 96mm

    (+/- 1mm)

    		 96mm

    (+/- 1mm)

    		 91mm

    (+/- 1mm)

    91mm

    (+/- 1mm)

    *55mm chainline for Rohloff and Super Boost hubs

    **This is the allowable outside-to-outside measurement of your BB bearings (with seals) when they are mounted to your frame.  The bearing preload collar on the crank is adjustable and can accommodate slightly wider or narrower widths (+/- 1mm) than the target number.

    What’s In The Box

    • One spindle
    • No mounting bolts included

     Technical Documents

     

     

  • MI5 Front Hub

    MI5 Front Hub

    The White Industries MI5 Front Hub is a lightweight, precision-machined hub built for road, gravel, touring, and classic mountain bikes with quick-release forks. We machine, assemble, and inspect every hub in our Petaluma, California facility. As a result, the MI5 delivers the smooth performance, lasting durability, and premium craftsmanship riders expect from White Industries.

    The MI5 traces its heritage back to the original White Industries Ti Front Hub introduced in 1992. For more than 30 years, we’ve refined our hub designs through real-world riding and continuous innovation. Today, every MI5 carries the same proven DNA: simple engineering, dependable performance, and long-lasting reliability.

    Designed with a clean, minimalist profile, the MI5 balances low weight with exceptional strength. Consequently, it’s an ideal choice for road and gravel bikes with rim brakes. At the same time, its durable construction makes it equally capable on loaded touring bikes and classic mountain bike builds. Two premium Enduro sealed cartridge bearings deliver smooth, efficient rolling while requiring minimal maintenance.

    Choose from four spoke drilling options and two anodized colors to build a wheelset that matches your bike and riding style. Whether you’re chasing pavement miles, exploring gravel roads, or embarking on a multi-day tour, the MI5 delivers premium American-made performance you can rely on.

    Features

    • Lightweight front hub for road, gravel, touring, and classic mountain bikes
    • Compatible with quick-release forks and rim brake wheelsets
    • Precision CNC-machined in Petaluma, California
    • Over 30 years of White Industries hub design and manufacturing expertise
    • Two premium Enduro sealed cartridge bearings for smooth, reliable performance
    • Simple, durable, and easy-to-service design
    • Available in four spoke drilling options and two colors
    • Made in the USA