Description

This patented product is a bicycle freewheel, featuring a construction of aluminum alloy and stainless steel. Available in black, red, gold, and silver colors, it offers various specifications ranging from 12T to 22T. The freewheel undergoes CNC cutting and anodized coloring processes, ensuring durability and an attractive appearance. The use of high-strength stainless steel enhances hardness, surpassing regular 316 stainless steel by twice the strength with a hardness rating of 18 degrees.

Specifications

• Material: Aluminum Alloy + Stainless Steel
• Colors: Black, Red, Gold, Silver
• Sizes (T): 12T, 13T, 14T, 15T, 16T, 17T, 18T, 19T, 20T, 21T, 22T
• Dimensions (MM): 55.8, 56.8, 61.8, 65.8, 70.5, 74.5, 79.4, 83.5, 87.7, 92.2, 97
• Weight (G): 45.5, 50.6, 52.5, 77.5, 80.8, 89.7, 95.2, 101.8, 108
• Gross Weight: Product Weight + 15g
• Packaging: OPP Bag
• Packaging Dimensions: 16011030mm
• Shipment Details: 5 Tower Pads + Freewheel Cover + 1 Freewheel
• Processing Technology: CNC Cutting/Anodized Coloring

Features

• Freewheel made of highly durable stainless steel, with strength and hardness twice that of ordinary 316 stainless steel, achieving a hardness of 18 degrees.
• Stainless steel screws for corrosion resistance, suitable for prolonged outdoor cycling.
• Tightening pieces and pads made of 6061 aluminum alloy, offering corrosion resistance, maintaining strength, and reducing weight.
• Compatibility with 7-10 speed cassette freewheel towers; please use a 7-10 speed chain for installation.
• Installation Tip: Ensure the angle between the chain tensioner and the rear dropout frame is less than or equal to 10 degrees for optimal tension, preventing slippage and ensuring smooth operation.
• Hardness Testing: Clear comparison of hardness between 304 stainless steel (15 degrees) and H316 stainless steel (over 18 degrees), indicating superior strength and hardness of H316.

Application