DNM OSL-Fat 20 x 4.0 Suspension Fork - Coil Spring - Straight - for Fat Tire Bike/EBIKE

★★★★★ 4.4 59 reviews

$128.00
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$128.00
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 210331775 Release Date 2026/04/02 List Price $51.20 Model Number 210331775
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  • Engineered by DNM, a professional suspension brand founded in 1976, specializing in high-performance front forks and rear shocks for motorcycles, mountain bikes, and e-bikes
  • Universal Standard Support:​ Features a 9x135mm quick release standard and a Post Mount disc brake mount (compatible with 160mm rotors, and adapts to 180mm/203mm). Fits tires up to 20x4.0 inches
  • 125mm Coil Spring Travel: Built with a reliable coil spring system, this fork provides a solid 125mm of travel, offering consistent performance and a plush feel ideal for tackling rough trails and absorbing impacts
  • Adjustable Preload: Equipped with a preload adjustment feature, allowing you to fine-tune the initial spring pressure. This lets you easily set the sag and match the fork's responsiveness to your weight and riding style for optimal setup
  • Manual Lockout: Features a convenient lockout function that can be activated manually. This allows you to lock the suspension, converting the fork to a rigid state for efficient climbing or smooth pavement riding, then quickly unlock it for full suspension action on descents
  • Essential Installation Note:​ This fork is supplied without headset installation parts, such as the star nut and crown race, which need to be sourced separately for your build
  • Important Usage Advisory:While aluminum suspension forks are not ideal for front hub motors, if you must proceed, ensure the motor is ≤350W​ and a torque arm is correctly installed. Regular fork inspections remain essential for safety

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4.4 out of 5
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59 ratings | 24 reviews
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