Dolvitrny for Brompton Cassette 5 6 7 Speed, AL7075 Lightweight Bike Freewheel, 11-28T Rear Sprocket Cluster for C T P Line Folding Gear Upgrade Parts

Details

• 5 6 7 Speed Cassette Compatibility: Supports 5-speed, 6-speed, and 7-speed drivetrains for seamless integration with and modern road, , and bikes in the US market.
• AL 7075 Aluminum Flywheel Core: from aerospace-grade AL 7075 aluminum alloy to deliver responsive acceleration and reduced rotational mass without compromising structural integrity.
• 11-28T Precision Tooth Profile: Features a tightly spaced 11-28T gear range with precisely teeth for smooth, consistent shifting performance varied terrain including hills and city streets.
• Multi-Bike Fit Design: Directly replaces standard freewheels on classic road, track, and bicycles-compatible with common hub threading (ISO/JIS) found on U.S.-spec C/T/Pline-style wheels.
• Color-Coded Visual Options: Available in bold Black, Red, Blue, and Gold finishes-each cassette clearly marked with speed count and ratio for quick identification during maintenance or upgrades.