S10 J-bend 5*135mm

Regular price $139.00
Regular price Sale price $139.00
Shipping calculated at checkout.
颜色 BLACK
颜色
Cassette interface
Cassette interface
Number of holes
Number of holes

Experience Ultimate Performance with the Koova S10 Mountain Bike Hub

The Koova S10 J-bend hub delivers professional-grade performance with our advanced 75-tooth ratchet system for instant engagement. Weighing just 315g, this lightweight rear hub is engineered for serious trail and enduro riders who demand reliability and responsiveness.

Key Features:

  • Ultra-fast 75T ratchet engagement system (4.8° engagement angle)
  • Lightweight aluminum construction - only 315g
  • Universal cassette compatibility: HG, XD, and MS standards
  • Available in 32H and 36H spoke configurations
  • Durable 6-bolt disc brake interface
  • Precision CNC-machined components

Technical Specifications:

  • Application: Mountain Bike (Trail, Enduro, All-Mountain)
  • Axle: 5×135mm
  • Brake Interface: 6-Bolt Disc
  • Spoke Holes: 32H / 36H
  • Weight: 315g (±5g)
  • Cassette Interface: HG / XD / MS compatible

Perfect for riders who need reliable performance on technical trails. The S10 hub combines lightweight design with bombproof durability.

Worldwide shipping available. Upgrade your ride with Koova precision engineering.

  • Hub shell Material: CNC-machined 7075-T6 aluminum
  • Axle Material : CNC-machined 7075-T6 aluminum
  • Bearings: 4PCS(6902*2+17287*2)
  • Drive System: 75T ratchet system, 75 POE engagement
  • Finish: Anodized


Protection: Full weather-sealed design, waterproof & dustproof

  • Free shipping on orders $199+.
  • We ship worldwide — rates show up at checkout.
  • Orders usually go out in 2–3 business days.
  • Taxes and duties depend on your country’s rules.
  • 30-day easy returns if unused and in original packaging.
  • Just email us at [support@koovacomponents.com] to start a return.
  • Refunds are sent once we get your item back.
Have questions? Contact us
75T-ratchet structure

Koova 75T High-Strength Ratchet

Upgrade your drivetrain with the Koova 75T High-Strength Ratchet!
Featuring a 75-tooth high-precision engagement design, it delivers ultra-fast 4.8° engagement for rapid power transfer and immediate pedal response. Whether you're charging through technical trails or sprinting to the finish, this ratchet ensures consistent, explosive performance.

S10 rear hub Processing

Precision That Performs|CNC-Crafted

Every Koova hub begins with aerospace-grade aluminum, meticulously CNC-machined through multiple stages to achieve unmatched precision. We demand tight tolerances to ensure ultra-smooth rotation, stable engagement, and long-lasting performance.

koova bearing

Ultra-Smooth, Built to Last|P5-Grade Precision Bearings

Inside every Koova hub, we use P5-grade high-precision bearings, engineered to perform under high-speed and demanding conditions. These bearings offer exceptional concentricity and rolling efficiency, ensuring low-friction rotation and long-lasting durability even during extended rides.