170mm Bicycle Crank Set 32T-38TWide Narrow Chainring BCD104 Mountain Bike Bicycle Parts Crank

Feature:

• These chainrings are a game changer for single-ring drivetrains!
• These Race Face Single rings now feature performance-enhancing chain retention technology, allowing them (for most riders) to be used without a chainguide!
• The secret are alternating fat/skinny teeth to fit more closely into the narrow and wide plate spacing of a normal chain, grabbing the chain and holding it more securely even without the use of a clutched derailleur.
• Narrow Wide tooth profiling ensures ultimate chain retention
• Stiff 4mm plate thickness and I-beam construction transfer loads
• without flexing

Specification:

• Name: hollow one crank crank
• Size: 170mm crank.
• Material: Aluminum alloy
• Crank screw diameter: 15MM
• Compatible: Single disc, double disc, three disc
• specifications: BCD104
• Weight: a crank around a 637g
• Color: gold, purple, blue, black, silver, red
• Advantages: made of aluminum alloy, light weight, stylish, stunning shape, axis strength, compatibility