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Hubs
$79.99
- Aluminum hub body
- Sealed bearings
- 6-bolt disc rotor mount
- 15mm (See MT-3100) or 20mm thru-axle
- 32 or 36-hole spoke drilling
$81.99 - $92.99
- Aluminum hub
- Sealed bearing
- Black
- 6-bolt disc brake rotor mount
$119.99 - $196.99
- 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
$119.99
- 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
$124.39 - $201.99
- Centerlock, 11-speed compatible road hubs
- Sealed bearings keep out contamination and dirt while providing a smooth rotation
- Skewer included
$124.99
- 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
$129.99 - $158.99
- Aluminum hubs
- Sealed bearing
- Black
- 6-bolt disc rotor
$139.99
- 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
$140.00
- Forged alloy construction
- Sealed Cartridge bearings
- Double contact seals
- 6-bolt disc
- 12x142mm rear spacing
- Aluminum hub body
$165.99 - $196.99
- 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
$196.99
- 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
$196.99
- 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
$249.99
- 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
$259.99
- 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
$269.99
- 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
$299.99
- 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
$49.99
Freehub for OneUp Rear Hubs. Available in XD/XDr, Hyperglide (HG) and Microspline (MS). Includes drives side end cap. Our XD / XDr Freehub can function as an XD freehub with the 1.85mm spacer installed or as an XDr freehub by removing the spacer.
$99.99
This is the front hub we want on our bikes. Lightweight, durable, with high quality bearings and seals to give you the best combination of performance, durability and price.
This is the new benchmark for a no-nonsense front hub.
$219.99
This is the rear hub we want on our bikes. A lightweight, durable, ratchet drive hub with high quality bearings and seals to give you the best combination
of performance, durability and price.
This is the new benchmark for a no-nonsense rear hub.
$9.99 - $22.99
- Press fit designed to work the hub's non-drive side collar.
$69.99
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
$189.99
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
$240.00
Industry Nine Hydra Classic mountain hubs are loaded with features every rider will appreciate such as revolutionary 0.52° engagement, generously low weights and an intuitive layout that can be serviced without any proprietary tools.
- From turning and milling bar stock 7075-T6 aluminum for shells, axles and encaps, wire EDM cutting A2 tool steel for pawls and driverings, to in-house anodization lab, every step of design, engineering, manufacturing and assembly is done to exacting standards in Asheville, NC
- 690 P.O.E. Hydra Freehub body engages every .52 degrees yeilding telepathic control
- Classic j-bend spoke interface
- Steel cartridge bearings are durable
- Easily serviced with no proprietary tools; Designed to keep you in the saddle and out of the service queue
$460.00 - $470.00
Industry Nine Hydra Classic hubs are the heart of your wheelset, everything revolves around them, literally. Every Classic Hydra hub is made start to finish in Asheville, NC. From turning and milling bar stock 7075-T6 aluminum for shells, axles and encaps, wire EDM cutting A2 tool steel for pawls and driverings, to in-house anodization lab, every step of design, engineering, manufacturing and assembly is done to exacting standards.
- 690 P.O.E. Hydra Freehub body engages every .52 degrees yeilding telepathic control
- 6 pawl, 6 phase
- 115 tooth drivering
- Easily serviced with no proprietary tools. Designed to keep you in the saddle and out of the service queue
- Classic j-bend spoke interface
- Steel cartridge bearings are durable
$460.00 - $470.00
Industry Nine Hydra Classic hubs are the heart of your wheelset, everything revolves around them, literally. Every Classic Hydra hub is made start to finish in Asheville, NC. From turning and milling bar stock 7075-T6 aluminum for shells, axles and encaps, wire EDM cutting A2 tool steel for pawls and driverings, to in-house anodization lab, every step of design, engineering, manufacturing and assembly is done to exacting standards.
- 690 P.O.E. Hydra Freehub body engages every .52 degrees yeilding telepathic control
- 6 pawl, 6 phase
- 115 tooth drivering
- Easily serviced with no proprietary tools. Designed to keep you in the saddle and out of the service queue
- Classic j-bend spoke interface
- Steel cartridge bearings are durable
$475.00 - $485.00
Industry Nine Hydra Classic hubs are the heart of your wheelset, everything revolves around them, literally. Every Classic Hydra hub is made start to finish in Asheville, NC. From turning and milling bar stock 7075-T6 aluminum for shells, axles and encaps, wire EDM cutting A2 tool steel for pawls and driverings, to in-house anodization lab, every step of design, engineering, manufacturing and assembly is done to exacting standards.
- 690 P.O.E. Hydra Freehub body engages every .52 degrees yeilding telepathic control
- 6 pawl, 6 phase
- 115 tooth drivering
- Easily serviced with no proprietary tools. Designed to keep you in the saddle and out of the service queue
- Classic j-bend spoke interface
- Steel cartridge bearings are durable
$8.00
Key Features
- 10, 11 and 12-speed compatible
- Sealed stainless Steel cartridge bearings
- Hub shell machined from a single forged aluminum billet
- Standard 6 bolt disc fitting
- 4 Pawl ratchet system with 44 tooth engagement (8.2 deg)
- Larger spoke flange to enable stiffer wheel builds
- Unsurpassed reliability
- Available in 170/177 and 190/197mm widths (specific hub shells)
$25.00
12x142mm conversion endcaps for Hope Pro 2 Evo rear hubs.
$29.21
15x142mm conversion kit for Hope Fatsno front hubs.
$29.21
Hope Front Axle Conversion Kits
· Compatible with Pro 2 and Pro 2 Evo hubs
· Converts all Hope Pro 2 and Pro 2 Evo hubs to 15mm through axle hubs
$32.29
Hope Front Axle Conversion Kits
· Compatible with Pro 2 and Pro 2 Evo hubs
· Converts all Hope Pro 2 and Pro 2 Evo front hubs to 20mm through axle hubs
$32.29
Hope Front Axle Conversion Kits
· Compatible with Pro 2 and Pro 2 Evo hubs
$120.00
Building on Hope’s 30+ years of manufacturing hubs, the Pro 5 is the combination of all our experience to meet and exceed the demands of current and future bike technology.
The Pro 4 proved to be one of the most reliable and versatile hubs on the market. The Pro 5 builds on this with improvements throughout, offering the right balance between speed of pick-up, load capacity, durability and drag.
One of the key design objectives for the Pro 5 was the reduction of drag in the drive mechanism. This has real world riding benefits and was achieved by upgrading the sealing with a new zero drag labyrinth seal, and an improved ratchet and pawl system, with new springs. Both greatly reduce drag as well as increase durability and load capacity when compared with the Pro 4.
Another big update comes in an increase in the points of engagement (from 44 to 108) using an offset 6 pawl freehub design, where 3 pawls are engaged at any time. This achieves the right balance between speed of pick-up, load capacity, drag & durability, and in real-world terms gives a speedy feel on the trail whilst keeping crank movement to an acceptable level without compromising the free running of the hub or its reliability.
Externally the shell takes a new profile to add stiffness without adding weight whilst housing a new axle design enabling the use of bigger bearings in a better arrangement to fit the latest freehub standards whilst increasing load capacity.
As with every product made at Hope durability and longevity are key. Everything about the Pro 5 has been considered, and tested to work in the worst conditions possible from seals to bearings....And eventually if something does wear out the Pro 5 is fully serviceable and rebuildable with simple tools, or if you need to change drivetrain standards one hub works with everything. So swapping freehubs is easily done, and changing end caps to suit different frame and fork axle standards future proofing your wheels.
Completely new for the Pro 5 is the option of Centrelock disc fitting and an e-bike specific hub that comes with a freehub tailor made for the stresses and strains of e-bike use.
Features
>> Improved sealing to stop dirt ingress and to reduce drag
>> New Labyrinth seal has zero drag for incredible freewheeling performance
>> New Pawls/Springs design to increase longevity, load capacity & a reduction of drag.
>> Increased engagement from 44 to 108 with a new offset 6 pawl freehub design
>> Wire cut pawls from high strength steel for maximum strength.
>> New step down axle design for a stiffer more durable freehub
>> New hub body profile for increased stiffness without adding weight
>> Ebike Specific hub designed for the demands of ebikes
>> Fully serviceable and rebuildable with simple tools
>> Available in 24, 28, 32 and 36 hole drillings
>> Available with all modern freehub bodies
>> End spacers can be easily swapped to suit different frame and axle standards
>> 6 bolt or Centrelock disc fitting
$133.13
Hope XD-11 Freehub Bodies
· Converts Hope Pro 2 hubs to work with XD Driver
· Contains axle, endcaps, bearings and driver
$475.00
Building on Hope’s 30+ years of manufacturing hubs, the Pro 5 is the combination of all of our experience into a product to meet and exceed the demands of current and future bike technology.
KEY FEATURES
- Improved sealing to stop dirt ingress and to reduce drag
- New Labyrinth seal has zero drag for incredible freewheeling performance
- New Pawls/Springs design to increase longevity, load capacity & a reduction of drag.
- Increased engagement from 44 to 108 with a new offset 6 pawl freehub design
- Wire cut pawls from high strength steel for maximum strength.
- New step down axle design for a stiffer more durable freehub
- New hub body profile for increased stiffness without adding weight
- Ebike Specific hub designed for the demands of ebikes
- Fully serviceable and rebuildable with simple tools
- Available in 24, 28, 32 and 36 hole drillings
- Available with all modern freehub bodies
- End spacers can be easily swapped to suit different frame and axle standards
- 6 bolt or Centrelock disc fitting
- Available in Black, Silver, Bronze, Red, Blue, Orange & Purple
$14.95
- 9 x 100mm quick-release endcaps for Spin Doctor 6F (front)
- Conversion kits for Spin Doctor 6-Drive hubs are not compatible with original Spin Doctor or Spin Doctor Pro hubs
$19.95
- Front axle conversion, 15mm thru-axle, Wide Boy
- Conversions for fitting a Wide Boy hub onto either a 15mm or 20mm thru-axle fork
$19.95
- Rear axle replacement kit, 10mm nutted, DJD-SupaD
- Spin Doctor, Spin Doctor Pro and Spin Doctor 6-Drive parts are generally not cross compatible
- DJD and DJD-BD parts are generally not cross compatible
$21.95
- Rear axle conversions for Spin Doctor Pro rear hub
- Various replacement axles and conversion kits for Spin Doctor and Spin Doctor Pro hubs
- Some conversions utilize pre-existing axle components for retrofit
- Conversion kits for original Spin Doctor and Spin Doctor Pro hubs are not compatible with Spin Doctor 6-Drive hubs
$29.95
- Converts a 120mm OL spacing track hub to 130mm OL Road spacing 10mm nutted steel axle
$35.95
- 10 x 135mm adapters for 6-Drive rear road disc hub
- Includes: two adapters and one disc rotor spacer
- Conversion kits for Spin Doctor 6-Drive hubs are not compatible with original Spin Doctor and Spin Doctor Pro hubs
$69.95
- Chromoly freehub body for Spin Doctor 6-Drive rear hub
- HyperGlide 8-11-speed
- Shimano/SRAM 8-10-speed, Shimano 11-speed mountain cassette compatible
- Compatible with road and mountain 6-Drive hubs
$84.95
- Axle/spacing: 10 x 120mm nutted
- Hole: 32-hole
- Weight: 304g
- CNC machined, high-polished, high-flange aluminum shell
- Japanese sealed cartridge bearings
- Hollow CrMo nutted axle with titanium color finish
- 120mm OL spacing rear hub with either double fixed flip-flop threading or fixed on one side and freewheel thread on the opposite
- 130mm OL rear axle conversion sold separately
$95.95
- Replacement driver for Original DJD or DJD-Bush Drive rear hub
- Need DJD Original removal tool or DJD Bush Drive removal tool (sold separately)
$99.95
- Light but strong enough for all types of riding including XC through DH
- Forged CNC machined aluminum shell 2 sealed cartridge bearings
- International Standard 6-bolt disc rotor mount
- End caps for 9x100mm QR available separately
- Boost version (HL-3208) is 15x110mm only
- Flange diameter: 58mm left/right
- Center to flange: 22mm left 30mm right
$199.95
- Axle/Spacing: 10/14 x 135mm bolt-on
- 14mm adapters included
- Micro-drive cassette rear hub for singlespeed and dirt jump
- International Standard 6-bolt disc rotor mount
- Bushed driver for greater durability over cartridge bearings (bearings have to be smaller for micro-drive, thus prone to higher loads)
- Forged 6061 aluminum shell, 2 main body sealed cartridge bearings
- CrMo M10 bolt-in fittings with 6mm anti-rotation hex fitting (helps when tightening wheel in frame)
- 12mm thru-axle conversion for DJD-BD available separately
- No cog included
- 9/10/11/13/16t mini sprockets available separately
$299.95
- Axle/Spacing: 10/14 x 135mm nutted
- International Standard 6-bolt disc rotor mount
- 11 tooth (1/8") steel cog is pre-installed, ideal for compact drivetrain setup
- Tough, instant pickup 120 point triple wedge pawl system with a bushed mini threaded driver for Singlespeed and Dirt Jump
- Bushed driver is more durable than cartridge bearings
- Forged 6061 aluminum shell, 2 main body sealed cartridge bearings
- CrMo M10 bolt-in fittings with 6mm anti-rotation hex fitting (helps when tightening wheel in frame), 14mm adapters included
$3.40
Parts for repair and maintenance of DT Swiss hubs.
$77.00
Direct power meets simplicity—running smoothly day-in and day-out.
The 350 hub was developed according to the credo: Reliability meets simplicity. The simultaneous engagement of the ratchets and the resulting large engagement area provide reliability. The plugged construction allows easy maintenance without the need for tools. Adaptation to different axle standards or modification of the engagement angle is also possible with just a few manual steps.
$77.70
DT Swiss Sinc Ceramic cartridge bearings.
- The black dust cover is intended to be installed facing the hub and the tan seal is intended to face externally
$77.70
DT Swiss Sinc Ceramic cartridge bearings.
- The black dust cover is intended to be installed facing the hub and the tan seal is intended to face externally
$77.70
DT Swiss Sinc Ceramic cartridge bearings.
- The black dust cover is intended to be installed facing the hub and the tan seal is intended to face externally
$77.70
DT Swiss Sinc Ceramic cartridge bearings.
- The black dust cover is intended to be installed facing the hub and the tan seal is intended to face externally
$223.90
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
$224.00
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
$225.00
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
$229.90
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.