Which brands produce the quietest mountain bikes?

The Trek Slash+ is a carbon-frame, mixed-wheel (mullet) high-pivot eMTB with 170 mm of travel front and rear and a quiet TQ HPR50 drive system paired to a 580 Wh internal battery. It's built for aggressive enduro riding and long descents while retaining sufficient range and a relatively low weight for an eMTB. The bike comes in two full-build specs emphasizing high-end suspension and drivetrain components.

The Project321 G3 rear hub uses the M-Pulse magnetic pawl drive with 288 points of engagement and a patent-pending 6-Lock rotor mounting that accepts six-bolt rotors or centerlock. It features anodized 7075 aluminum axles, dual double-row bearings, improved sealing, and is made in Canada, aimed at high-engagement, low-drag performance. The hub suits riders who want fast engagement and tunable hub sound.

The Orbea Rise LT is a lightweight long-travel eMTB with 150mm rear and 160mm front travel, built on an OMR carbon frame and driven by the Shimano EP801 RS motor with internal battery options. It pairs 29 in wheels, a Concentric Boost suspension platform, and high-end components (Shimano 12-speed drivetrain and XT brakes) for capable trail descending and efficient climbing. The LT suits riders who want more aggressive geometry and travel than the SL while keeping overall weight low.

The Chris King R45 Rear Hub is a high-precision road/cyclocross hub featuring the proprietary RingDrive engagement (45 points) and serviceable sealed angular-contact bearings available in steel or ceramic. It's lightweight and narrow-bodied for aerodynamic wheel builds, made and assembled in the USA and offered in multiple axle, hole-count, and driveshell options. Suited for performance road and cyclocross wheel builds seeking durable, serviceable hubs.

The DT Swiss 350 is a durable, serviceable hub available with DT's Ratchet freehub (options include 18t, 24t, 36t, 54t or high-engagement DEG 72). It's built for MTB use with multiple axle and cassette interfaces and a focus on reliability and easy maintenance. Suited to riders who want robust performance and upgradeable engagement without a premium weight penalty.

The Industry Nine Hydra rear hub is a high-engagement MTB hub featuring a 690-point drive with a six-pawl leaf-spring actuation, sealed bearings, and multiple axle standards for Boost/QR compatibility. It's serviceable, made in the USA, offered in multiple colors, and designed for off-road use and quick power transfer.

The Onyx Classic Rear Hub uses a patented sprag clutch to provide instant engagement and near-silent operation, built for heavier use like e-bikes, bikepacking, tandems, and larger riders. It is a serviceable, build-to-order hub offered in multiple axle standards and spoke counts and prioritizes durability over minimal weight.

The Onyx Vesper Rear Hub is a lightweight, sprag-clutch rear hub designed for cross-country and trail use with a quiet, pawl-free engagement. It features multiple axle standards, J-bend flange, and XDR or Micro Spline driver options for modern drivetrains. Suited for riders wanting low-noise, durable hubs for custom wheel builds.

The Orbea Rise LT is a lightweight long-travel eMTB with 150mm rear and 160mm front travel, built on an OMR carbon frame and driven by the Shimano EP801 RS motor with internal battery options. It pairs 29 in wheels, a Concentric Boost suspension platform, and high-end components (Shimano 12-speed drivetrain and XT brakes) for capable trail descending and efficient climbing. The LT suits riders who want more aggressive geometry and travel than the SL while keeping overall weight low.