Crank Brothers Synthesis Alloy 2.0 DH Super Boost I9 Black Rear Wheel - Rear - 27.5 Inch - 12x157mm Super Boost - Aluminium - 29.5mm - 6 Bolt - Shimano HG Splined PDP|PLP|Rail Material 360° Turbine Technology reduces peak

360° Turbine Technology reduces peak brain acceleration by up to 30% at impact speeds associated with concussions

9 and 10-speed chains will need to be replaced when the

hardened and tempered

There's an aluminium core sandwiched between two stainless steel outer layers

Crank Brothers Synthesis Alloy 2.0 DH Super Boost I9 Black Rear Wheel - Rear - 27.5 Inch - 12x157mm Super Boost - Aluminium - 29.5mm - 6 Bolt - Shimano HG Splined PDP|PLP|Rail Material 360° Turbine Technology reduces peakThe Crankbrothers Synthesis DH Alloy 2. 0 wheels are purpose built for downhill racing and riding, offering a tuned system for ultimate performance on the most demanding trails. The compliant front wheel enhances grip and control through rocks, roots, and technical features, while the stiff rear wheel provides the stability and durability needed to handle high speed impacts and aggressive cornering. Reinforced rims, spokes, and a DH specific profile