Hubs

The pinnacle among the hubs–Ratchet EXP united with SINC ceramic bearings. The premium 180 hub convinces with its sophisticated Ratchet EXP technology, giving the hub extra lightness, stiffness, and precision along with easy, no-tool maintenance. Furthermore, assembled with the low-friction SINC ceramic bearings, the hub performs efficiently and brings your power directly to the road. The hub is available for straight pull spokes only.

Aluminum rear hub for bicycle - 18P DBCL 24 holes, straightpull, black. Aluminum Campagnolo freehub body, black. - Dimension: 12x142mm

Direct power transmission in every riding situation—240 with Ratchet EXP. With the latest generation of the 240 hubs, the strengths have been further enhanced. The latest Ratchet EXP freehub system increases the bearing lifetime thanks to the increased bearing distance. The new version of the end caps simplifies tool-free disassembly and makes maintenance easier. The hollow-machined ratchets transfer your energy directly into acceleration thanks to the 36 teeth.

Direct power transmission in every riding situation—240 with Ratchet EXP. With the latest generation of the 240 hubs, the strengths have been further enhanced. The latest Ratchet EXP freehub system increases the bearing lifetime thanks to the increased bearing distance. The new version of the end caps simplifies tool-free disassembly and makes maintenance easier. The hollow-machined ratchets transfer your energy directly into acceleration thanks to the 36 teeth.

Direct power transmission in every riding situation—240 with Ratchet EXP. With the latest generation of the 240 hub, the strengths have been further enhanced. The latest Ratchet EXP freehub system increases the bearing lifetime thanks to the increased bearing distance. The new version of the end caps simplifies tool-free disassembly and makes maintenance easier. The hollow-machined ratchets transfer your energy directly into acceleration thanks to the 36 teeth.

Direct power transmission in every riding situation—240 with Ratchet EXP. With the latest generation of the 240 hub, the strengths have been further enhanced. The latest Ratchet EXP freehub system increases the bearing lifetime thanks to the increased bearing distance. The new version of the end caps simplifies tool-free disassembly and makes maintenance easier. The hollow-machined ratchets transfer your energy directly into acceleration thanks to the 36 teeth.

Shimano's Alfine SG-S7001 Disc Brake Internally Geared Hub delivers an impressive gear range, spread across 11 speeds, all with the reliability and low maintenance you can only get with an internally geared hub. - Center Lock Disc Rotor Compatible

The pinnacle among the hubs–Ratchet EXP united with SINC ceramic bearings. The premium 180 hub convinces with its sophisticated Ratchet EXP technology, giving the hub extra lightness, stiffness, and precision along with easy, no-tool maintenance. Furthermore, assembled with the low-friction SINC ceramic bearings, the hub performs efficiently and brings your power directly to the road. The hub is available for straight pull spokes only.

Aluminium front hub for bicycle - 18P DBCL 24 holes, straight pull, black. Dimension: 12x100mm.

The new standard for durability and price. - Patented Star-Ratchet system - Contact-free seals and high precision build guarantee smooth bearings - Press-fit end caps allow tool-free maintenance and conversion

- Elite Series convertible MTB hubs - Available in multiple axle configurations - Shimano/SRAM 8-11s and XD cassette body options with 6 pawl/54 point/6.6° engagement - Straight pull and J-bend spoke options - 6 bolt disc brake rotor compatible - Sealed bearings J-Bend SPECIFICATIONS - OLD: 148mm - Left Flange Diameter: 58mm - Right Flange Diameter: 458mm - Left Locknut-To-Flange: 36.65mm - Right Locknut-To-Flange: 51.35mm - Left Center-To-Flange: 37.5mm - Right Center-To-Flange: 22.8mm Straight-Pull SPECIFICATIONS - OLD: 148mm - Left Flange Diameter: 55mm - Right Flange Diameter: 55mm - Left Locknut-To-Flange: 39.5mm - Right Locknut-To-Flange: 53.8mm - Left Center-To-Flange: 34.65mm - Right Center-To-Flange: 20.35mm

- Elite Series convertible MTB hubs - Available in multiple axle configurations - Shimano and XD cassette body options with 6 pawl/54 point/6.6-degree engagement - Straight pull and J-bend spoke options - 6 bolt disc brake rotor compatible - Sealed bearings - Material: AL6061 J-Bend/QR: - PCD-L: 58mm - PCD-R: 58mm - LTF-L: 32.95mm - LTF-R: 48.45mm - CTF-L: 34.7mm - CTF-R: 19.2mm J-Bend/142 x 12mm: - PCD-L: 58mm - PCD-R: 58mm - LTF-L: 36.45mm - LTF-R: 51.95mm - CTF-L: 34.7mm - CTF-R: 19.2mm Straight Pull/QR: - PCD-L: 51mm - PCD-R: 51mm - LTF-L: 36.2mm - LTF-R: 50.1mm - CTF-L: 31.45mm - CTF-R: 17.55mm Straight Pull/142 x 12mm: - PCD-L: 51mm - PCD-R: 51mm - LTF-L: 39.7mm - LTF-R: 53.6mm - CTF-L: 31.45mm - CTF-R: 17.55mm

- Elite Series convertible road disc hubs - Available in multiple axle configurations - Shimano and Campagnolo cassette body options with 6 pawl/48 point/7.5° engagement - Straight pull and J-bend spoke options - 6 bolt and Center Lock disc brake rotor options - Sealed bearings - Material: AL6061 Straight Pull Spoke/QR Axle: PCD-L: 35mm PCD-R: 49mm LTF-L: 32.75mm LTF-R: 50.05mm CTF-L: 34.9mm CTF-R: 17.6mm Straight Pull Spoke/12mm Thru-Axle: PCD-L: 35mm PCD-R: 49mm LTF-L: 36.25mm LTF-R: 53.55mm CTF-L: 34.9mm CTF-R: 17.6mm J-Bend Spoke/QR Axle: PCD-L: 45mm PCD-R: 50.6mm LTF-L: 32.65mm LTF-R: 48.2mm CTF-L: 35mm CTF-R: 19.45mm J-Bend Spoke/12mm Thru-Axle: PCD-L: 45mm PCD-R: 50.6mm LTF-L: 36.15mm LTF-R: 51.7mm CTF-L: 35mm CTF-R: 19.45mm

Reliable, simple, and e-bike specific hub. To withstand the higher torque of e-drive systems, the 350 hybrid is equipped with steel rotors and a specific 24T ratchet out of hardened steel. Oversized bearings ensure smooth running under extreme conditions.

- Elite Series road hubs - Shimano and Campagnolo cassette body options with 6 pawl/48 point/7.5° engagement - Straight pull and J-bend spoke options - Sealed bearings - Material: AL6061 - Brake Type: Rim - OLD: 130mm Straight Pull Spoke: PCD-L: 32mm PCD-R: 52.5mm LTF-L: 27.7mm LTF-R: 50.8mm CTF-L: 37.45mm CTF-R: 14.35mm J-Bend Spoke: PCD-L: 38.5mm PCD-R: 50.6mm LTF-L: 27.45mm LTF-R: 49.05mm CTF-L: 37.7mm CTF-R: 16.1mm

DT's 350 MTB rear hub offers top-end performance for all your riding needs. DT Swiss' Ratchet freewheel system provides precise engagement, high load capacity, and reliability. The Ratchet System driver is extremely durable and can be easily serviced—without tools—in minutes thanks to it's press fit assembly. The press fit assembly also allows the hub to work with a wide array of axle configurations; by simply swapping out the tool-free end caps (sold separately), you'll be able to enjoy the legendary DT Swiss quality on almost any bike. • Accepts 6-bolt rotors

The number to count on—240 with Ratchet EXP. The new 240 is developed for riders with the most extreme ambitions. The latest version of the hub is equipped with the Ratchet EXP system to maximize reliability. The increased bearing distance increases bearing lifetime, the straight spring provides more direct engagement (which reduces wear), and a smaller number of parts not only makes maintenance easier, but also reduces weight.

The number to count on—240 with Ratchet EXP. The new 240 is developed for riders with the most extreme ambitions. The latest version of the hub is equipped with the Ratchet EXP system to maximize reliability. The increased bearing distance increases bearing lifetime, the straight spring provides more direct engagement (which reduces wear), and a smaller number of parts not only makes maintenance easier, but also reduces weight.

The number to count on—240 with Ratchet EXP. The new 240 is developed for riders with the most extreme ambitions. The latest version of the hub is equipped with the Ratchet EXP system to maximize reliability. The increased bearing distance increases bearing lifetime, the straight spring provides more direct engagement (which reduces wear), and a smaller number of parts not only makes maintenance easier, but also reduces weight.

The number to count on—240 with Ratchet EXP. The new 240 is developed for riders with the most extreme ambitions. The latest version of the hub is equipped with the Ratchet EXP system to maximize reliability. The increased bearing distance increases bearing lifetime, the straight spring provides more direct engagement (which reduces wear), and a smaller number of parts not only makes maintenance easier, but also reduces weight.

- Elite Series convertible fat bike hubs - Available in multiple axle configurations - Shimano and XD cassette body options with 6 pawl/54 point/6.6° engagement - J-bend spoke compatible - 6 bolt disc brake rotor compatible - Sealed bearings - Material: AL6061 - Color: Blk - Brake Type: 6B - PCD-L: 58mm - PCD-R: 58mm Quick-Release: - LTF-L: 48.65mm - LTF-R: 48.65mm - CTF-L: 36.5mm - CTF-R: 36.5mm 12mm Thru-Axle: - LTF-L: 52.15mm - LTF-R: 52.15mm - CTF-L: 46.5mm - CTF-R: 46.5mm

Whether the goal is a finish line, epic adventure or simply getting back home again, SRAM'S 900 hubs are ready for the challenge. On the inside, the smooth and durable DOUBLE TIME drive mechanism ensures rapid engagement for quick and confident pedal responsiveness. SPEEDBALL bearings provide smooth, long-lasting rotation performance. Multiple spoke-count and cassette-capability options, as well as interchangeable end caps, make the 900 hubs a perfect choice for any disc-equipped road, gravel, cyclocross, cross country, trail, or enduro bike. - Versatile driver body can accept ROAD or MTB drivetrain, full spline or XD cassettes - Fully convertible with tool-free end caps - BOOST variants - 24, 28 or 32 spoke holes

Whether the goal is a finish line, epic adventure or simply getting back home again, our new 900 hubs are ready for the challenge. On the inside, our smooth and durable DOUBLE TIME drive mechanism ensures rapid lightning-fast engagement for quick and confident pedal responsiveness. SPEEDBALL bearings provide smooth, long-lasting rotation performance. Multiple spoke-count and cassette-capability options, as well as interchangeable end caps make the 900 hubs a perfect choice for any disc-equipped road, gravel, cyclocross, cross country, trail, or enduro bike. - Includes Quick Release & 12x142mm Through AxleCaps - Fully convertible with tool free end caps - DOUBLE TIME mechanism offers smooth,quick and durable engagement - Versatile driver body can accept ROAD or MTB drivetrain, full spline or XD cassettes - Axle type: Conversion Caps included - Spoke holes: 24 - Brake compatibility: Disc (6-bolt) - Driver Mechanism: Double Time - Four Pawl - Axle material: Tapered aluminum - Driver body material: Aluminum - Hub shell: Aluminum - Seeker angled flanges - Oversized body

The new standard for durability and price. - Patented Star-Ratchet system - Contact-free seals and high precision build guarantee smooth bearings - Press-fit end caps allow tool-free maintenance and conversion

- Tough on trail and light on price rated for everything from XC to Enduro and E-bike - Steel axles cartridge bearings robust alloy hub shell and steel cassette body - 10-degree pawl engagement - International Standard 6-bolt disc mount - *Shimano/SRAM

Whether it's a custom build or just a replacement, these hubs are the foundation for a high quality wheelset. Product details - Bontrager rear hub for use with 197mm dropouts - Rapid Drive 108 hub instantly transfers effort into forward momentum - Flange diameter: 58mm - NDS flange offset: 59.5mm - DS flange offset: 46mm - 32 hole, 6-bolt rotor

- Elite Series convertible cyclocross/gravel hubs - Available in multiple axle configurations - Straight pull and J-bend spoke options - 6 bolt disc brake rotor compatible - Sealed bearings - Use: Front Hub - Bearing: Sealed - Drilling: 28H - Material: AL6061 - Color: Blk - Brake Type: 6B - OLD: 100mm J-Bend Spoke: - PCD-L: 58mm - PCD-R: 45mm - LTF-L: 27.65mm - LTF-R: 15.35mm - CTF-L: 22.35mm - CTF-R: 34.65mm Straight Pull Spoke: - PCD-L: 51mm - PCD-R: 51mm - LTF-L: 31.4mm - LTF-R: 19.6mm - CTF-L: 18.6mm - CTF-R: 30.4mm

- Elite Series convertible MTB hubs - Available in multiple axle configurations - Shimano and XD cassette body options with 6 pawl/54 point/6.6° engagement - Straight pull and J-bend spoke options - 6-bolt disc brake rotor compatible - Sealed bearings J-Bend SPECIFICATIONS - OLD: 110mm - Left Flange Diameter: 58mm - Right Flange Diameter: 45mm - Left Locknut-To-Flange: 27.05mm - Right Locknut-To-Flange: 15.05mm - Left Center-To-Flange: 27.95mm - Right Center-To-Flange: 39.95mm Straight-Pull SPECIFICATIONS - OLD: 110mm - Left Flange Diameter: 55mm - Right Flange Diameter: 55mm - Left Locknut-To-Flange: 31.5mm - Right Locknut-To-Flange: 19.5mm - Left Center-To-Flange: 23.5mm - Right Center-To-Flange: 35.5mm

- Elite Series convertible MTB hubs - Available in multiple axle configurations - Straight pull and J-bend spoke options - 6 bolt disc brake rotor compatible - Sealed bearings - Material: AL6061 - Wt: 180g J-Bend: - PCD-L: 58mm - PCD-R: 45mm - LTF-L: 27.65mm - LTF-R: 15.35mm - CTF-L: 22.35mm - CTF-R: 34.65mm Straight Pull: - PCD-L: 51mm - PCD-R: 51mm - LTF-L: 31.4mm - LTF-R: 19.6mm - CTF-L: 18.6mm - CTF-R: 30.4mm

- Elite Series convertible road disc hubs - Available in multiple axle configurations - Straight pull and J-bend spoke options - 6 bolt and Center Lock disc brake rotor options - Sealed bearings - Material: AL6061 Straight Pull Spoke/6-Bolt Disc: PCD-L: 36mm PCD-R: 36mm LTF-L: 27.75mm LTF-R: 15.25mm CTF-L: 22.25mm CTF-R: 34.75mm J-Bend Spoke/Centerlock Disc: PCD-L: 45mm PCD-R: 45mm LTF-L: 27.25mm LTF-R: 15.45mm CTF-L: 22.75mm CTF-R: 34.55mm

Shimano's Track Dura-Ace Hi-Flange Hubs build up into stiff, fast spinning wheels that want to sprint right out off the line. Stainless steel bearings and Borozon treated bearing races minimize drag for maximum efficiency and speed. You get your choice of single or double-sided cog threading. - Weight: 313 grams

The Shimano Alfine DH-UR705-3D Dynamo hub employs a new internal unit construction that is lighter and also reduces dynamo drag while producing 3 watts. It is designed for 26 to 28-inch Center Lock wheels and uses a 12 x 100mm E-THRU axle design. - New internal unit construction is 28g lighter than DH-T8000-3D - More efficient wheel rotation reduces dynamo drag by up to 44% from DH-T8000 - Proper positioning with 12mm E-THRU - Angular contact bearings - Compact & lightweight - Low rotational resistance - Effortless setting of disc rotor - Durable sealing performance

The Clutch Hub is a traditional clutch-based coaster hub design that eliminates all of the problematic elements on ordinary hubs and only keeps the parts that work. A new, super-strong FULL 14mm axle, bearing configuration, and drag mechanism design stops the need for constant repairs. Equipped with external slack adjustment, which can be done with a 2.5mm hex key through a hub shell access hole (can be adjusted without removing the wheel), and an improved plastic hub guard spec. Same Clutch coaster hub you’ve come to love, but with a few upgrades. Features: - Maximum strength axle design - Super-durable bearing arrangement throughout - 2.5mm hex key slack adjustment through hub shell access hole. No wheel removal required. - Super-durable drag mechanism design - Crankflip ready Improvements Over the Clutch V1: - 14mm chromoly axle bolts on both the drive and non-drive side for greater reliability - Improved clutch engagement - Improved manufacturing precision throughout - More slack than the V1 hub - All-new durable proprietary plastic spec for the removable hub guard Specs: - 36-hole, 2014-T6 aluminum shell - 9T Driver - Left or right hand drive - 22 oz / 623g Guard Options: - Plastic hub guard included (but optional to use) - Alloy hub guard also available

The DH-UR700-3D Dynamo hub employs a new internal unit construction that is lighter and also reduces dynamo drag while producing 3 watts. It is designed for 26 to 28-inch quick-release wheels. - New internal unit construction is 28g lighter than DH-T8000-3D - More efficient wheel rotation reduces dynamo drag by up to 44% from DH-T8000 - Angular contact bearings - Compact & lightweight - Low rotational resistance - Durable sealing performance

- Produced by one of Japan's oldest hub makers - Silky smooth Japanese sealed cartridge bearings - High polished finish - Choose fixed/free or fixed/fixed flip-flop rear hub - Hub spacing: 120mm OLD

- Singlespeed freecoaster hubs with 9-tooth driver - Sealed bearings - Use: Rear - Gears: Singlespeed w/ 9-tooth driver - Drilling: 36 - Axle: 14mm - OLD: 110mm - Bearing Type: Sealed

Featuring WTP's very own, patented 3-point clutch friction system, the Helix hub will take you backwards in style and hold up to any peg abuse that comes its way. - Unique internal arrangement with face-bearing clutch stopper - WTP Patented "Tri-Point" friction system - Hub Drilling: 32 - Cassette Body Type: Single Cog Driver - Axle Size: 14mm - Spoke Interface: J-Bend

- Elite Series convertible fat bike hubs - Available in multiple axle configurations - J-bend spoke compatible - 6 bolt disc brake rotor compatible - Sealed bearings - Bearing: Sealed - Material: AL6061 - Color: Blk - Brake Type: 6B - PCD-L: 58mm - PCD-R: 58mm - LTF-L: 27.65mm Quick Release: - Weight: 246g - LTF-R: 24.85mm - CTF-L: 39.85mm - CTF-R: 42.65mm 15mm Thru-Axle: - Weight: 256g - LTF-R: 27.65mm - CTF-L: 47.35mm - CTF-R: 47.35mm

- Aluminum hubs - Sealed bearing - Black - 6-bolt disc rotor

Shimano Alfine Center Lock Dynamo Front Hub - Compatible with 26 to 28-inch wheel sizes - Light alloy QR lever and nut - 6V, 3.0W output - Centerlock rotor mount - Spoke Interface: J-Bend - Weight: 575g

- Forged alloy construction - Sealed Cartridge bearings - Double contact seals - 6-bolt disc - 12x142mm rear spacing - Aluminum hub body

- Aluminum alloy shells resist corrosion and provide lightweight longevity - Sealed cartridge bearings offer smooth operation while resisting contaminants - Thru axle design with 8-10 speed cassette and XD drivetrain options - Brake Type: 6B

- Centerlock, 11-speed compatible road hubs - Sealed bearings keep out contamination and dirt while providing a smooth rotation - Skewer included

Hubs typically seem to fall into two general categories: light and very expensive or heavy and cheap. With this typical bike industry paradigm, we saw an opportunity. You see, for years we've been using high-end geared hubs from the manufacturer of our track offerings on our personal bikes. They are very lightweight (peep the specs) and just plain work. We decided to finally make those hubs available to you and corner the market in our own category: lightweight, affordable, and incredibly practical. We've ridden them on all kinds of bikes from the Electric Queen to the Mr. Pink and we're in love. They are reliable, dang light and very reasonably priced. We offer the Go-Devil in a minimal amount of configurations and ship them with all the necessary endcaps and a quick release skewer, future proofing them in case you want to use them on various bikes over the years. Quick Release lever and 12mm thru-axle endcaps are included. On all models we spec high-quality made in Japan stainless-steel sealed bearings. The splined freehubs have 28 points of engagement, the XD driver has 56. Oh, and we've got polished options as well. Kind of a big deal because polished hubs have become a rarity. - Weight: 277g - Includes 12mm thru-axle end caps and quick release skewer - Drive Side Center To Flange 18.5mm - Non-Drive Center to Flange 34mm - Non-Drive Flange Diameter 58mm - Drive Side Flange Diameter 49mm

Track Rear Hub - .

- 11-speed compatible road hubs - Sealed bearings keep out contamination and dirt while providing a smooth rotation - Skewer included Specifications: - Use: RR - Gears: 8-11s Cass - Drilling: 24H - Spacing / Axle: 12TA - Brake Type: CL - Bearing Type: Sealed - Bearing Model: 6902 - Bearing Size: 15x28x7

- Elite Series road hubs - Straight pull and J-bend spoke options - Sealed bearings Straight Pull Spoke: PCD-L: 30.3mm PCD-R: 30.3mm LTF-L: 13.1mm LTF-R: 13.1mm CTF-L: 36.9mm CTF-R: 36.9mm J-Bend Spoke: PCD-L: 31mm PCD-R: 31mm LTF-L: 10.78mm LTF-R: 10.78mm CTF-L: 39.22mm CTF-R: 39.22mm

- Aluminum hub - Sealed bearing - Black - 6-bolt disc brake rotor mount

- Aluminum hubs - Sealed bearing - Nutted - Use: Rear 110mm - Driver: Singlespeed cassette w/12T cog and lockring - Axle: 3/8-inch - Material: Alloy - Brake Type: Rim - OLD: 110mm - Bearing Type: Sealed - Drilling: 32

- Aluminum hubs - Sealed bearing - Nutted - Use: Rear 110mm - Driver: Singlespeed cassette w/12T cog and lockring - Axle: 3/8-inch - Material: Alloy - Brake Type: Rim - OLD: 110mm - Bearing Type: Sealed - Drilling: 36

Whether it's a custom build or just a replacement, these hubs are the foundation for a high-quality wheelset. Product details - Bontrager front hub for use with 150mm forks - Flange diameter: 58mm - NDS flange offset: 45mm - DS flange offset: 53.5mm - 32 hole, 6-bolt rotor

- Dynamo generator front hub features 3.0-watt headlight power supply - A356 aluminum hub shell with 9mm solid nutted axle (140mm overall axle length) - Choose 70mm or 90mm drum brake (brake levers sold separately) - Light sold separately

Track Front Hub - High polish silver aluminum

Surly's Ultra New Disc Rear Hub is just the thing for singlespeed fanatics and one-gear mountain riders. This gorgeous hunk of aluminum boasts reliable sealed bearings and a 6-bolt disc attachment on one side and threads for a singlespeed freewheel (or fixed cog) on the other. A hollow axle lets you choose how to secure it to your dropouts. You have choice between the included fixing bolts or a quick release skewer (sold separately). And, that aforementioned chromoly axle is flex-free to take all the abuse you can dish out, and then some!

Ratchet freehub bodies have a gloss finish and don't have a seal, as this is fixed on the hub shell. The Ratchet System was the first of this type for DT Swiss; used in the mid-range products like the 350 hubs.

- Heat-treated axle for improved strength - Angled flanges for lateral stability in wheel building - Rear hubs include a 4-pawl cassette body with 9-tooth driver - Use: Rear - Driver: Singlespeed cassette w/9T cog and lockring - Axle: 14mm, 3/8-inch - Material: Alloy - Drilling: 36

- Heat-treated axle for improved strength - Angled Flanges for lateral stability in wheel building - Rear hubs include a 4-Pawl Cassette body with 9-tooth driver - Use: Rear - Driver: Singlespeed cassette w/9T cog and lockring - Spacing / Axle: 14mm - Material: Alloy - Drilling: 48

- Forged aluminum construction - Sealed Cartridge bearings - Double contact seals - 6-bolt disc rotor compatible - 8/10-speed cassette compatibility - Quick-release - 135mm hub spacing

Whether the goal is a finish line, epic adventure or simply getting back home again, SRAM's 900 hubs are ready for the challenge. On the inside, their smooth and durable DOUBLE TIME drive mechanism ensures rapid engagement for quick and confident pedal responsiveness. SPEEDBALL bearings provide smooth, long-lasting rotation performance. Multiple spoke-count and cassette-capability options, as well as interchangeable end caps, make the 900 hubs a perfect choice for any disc-equipped road, gravel, cyclocross, cross country, trail, or enduro bike. - Fully convertible with tool-free end caps - 24, 28 or 32 spoke holes

The Vandero hub is back and better than ever. This new PRO version of the Vandero is a precision sealed hub with proven in-bound 3/8-inch axle bolts and two plastic guards. Features: - 7075-T6 aluminum hub shell - 6903RS sealed cartridge ball bearings - Precision bored fully concentric bearing seats for a smoother spin and prolonged bearing life - 17mm 7075-T6 aluminum axle with steel helicoil thread inserts - 3/8-inch heat-treated chromoly axle bolts with 17mm wrench flats and a 6mm hex slot - Weight: 11.2oz - Replaceable plastic hub guards included