ZRACE | ZRACE 9 Speed MTB Cassette 11-40T / 11-42T 9s Bike Freewheel for SM HG Hub

Brand: ZRACEMaterial: SteelFeatures:Improved durability by 25%, by using high strength steel meant for cars.Improved supporting structure, for better clutching.MTB Endurance To endure, is to embrace romanceMountain off-road, all-terrain riding, steep gradient climbing, single-chainring system conversion Max. Teeth High-strength steel rear bracketMax. Teeth >= 46T Aluminum Alloy Rear Bracket (Weight Reduction, Lower Moment of Inertia)Weight-reducing holes & hollowed aluminum bracketCassette freewheel secured via the lockringFull-surface high-hardness nickelplating, wear-resistant and anti-corrosiveCompatible With Shimano HG hub body design