Description

SHIMANO FH-M618-B Through Axle Rear Freehub
Attributes: Axes, Road Cycling
Upgrade your ride with the SHIMANO DEORE FH-M618-B Boost rear freehub. Engineered for enhanced trail performance, its 148mm Boost spacing and wider flange design deliver superior wheel rigidity and precision handling. Experience immediate acceleration thanks to the 36-point engagement for crisp power transfer. Built tough with all-weather durability through labyrinth and contact sealing, paired with smooth-rolling angular contact bearings. Compatible with 8-11 speed and Center Lock disc brakes. A reliable, responsive, and strong foundation for your rear wheel.
This rear freehub is a testament to Shimano´s commitment to performance and reliability. The integration of Boost 148mm O.L.D. (Over Locknut Dimension) spacing is a game-changer for modern trail riding. By widening the hub flanges, the SHIMANO FH-M618-B creates a more stable, stiffer, and stronger wheel build. This translates directly to more predictable steering and enhanced confidence when navigating technical terrain, rock gardens, and high-speed corners. The improved spoke bracing angle minimizes wheel flex under load, ensuring every ounce of your effort is converted into forward momentum.
At the heart of its performance is the quick engagement freehub mechanism. With 36 points of engagement, power transfer is nearly instantaneous. This rapid response is critical for accelerating out of turns, conquering technical climbs, and navigating stop-start sections of trail with maximum efficiency. You´ll feel the immediate connection between your pedals and the trail, eliminating lag and providing a more dynamic riding experience.
Durability is paramount, and the FH-M618-B is built to withstand the rigors of all-weather mountain biking. Shimano´s proven labyrinth and contact sealing system provides exceptional protection against the ingress of mud, water, and grit, significantly extending the service life of the internal components. This robust sealing is paired with high-quality Cup & Cone angular contact bearings. Unlike standard cartridge bearings, this system is designed to better handle both radial and lateral forces, resulting in superior durability and incredibly smooth rolling performance that lasts. They are also easily serviceable, allowing for long-term maintenance and peak efficiency.
Technical Specifications:
* Model: FH-M618-B
* Series: SHIMANO DEORE M610
* Brake Type: CENTER LOCK Disc Brake
* Rear Speeds: 8-11
* O.L.D. (Over Locknut Dimension): 148 mm
* Axle Type: 12mm E-THRU
* Spoke Holes: 32H
* Engagement Type: Quick engagement
* Flange Distance: 63.4 mm
* Offset: 6.6 mm
* P.C.D. Left / Right: 44 / 45 mm
* Flange Diameter Left / Right: 52.8 / 53.8 mm
* Sealing: Labyrinth & Contact
* Bearing Type: Cup & Cone (Angular Contact)