GOLDIX | GOLDIX Full Steel One-Piece Road HG Cassette 11S 11-32T/34T 12S 11-30T/34T/36T Ultralight 172-210g High Strength Bicycle Gears

Product SpecificationsBrand: GOLDIXModel: R9100Product Type: Road Bike Cassette (HG Standard)Speed Options: 11-speed / 12-speedFreehub Body: Standard Road HGMaterial: SteelFinish Color: BlackCompatible Bikes: Drop-bar road bikes, rim-brake road bikes, disc-brake road bikes, gravel bikes, touring road bikes Key Features1. CNC-machined from a single piece of steel; weighs only approx. 172–210g. 2. Optimized tooth profile for smooth shifting transitionsThe cogs feature optimized shift ramps and progressive tooth profiles designed for multi-speed road drivetrains. This facilitates smooth chain movement between adjacent cogs, minimizing noticeable hesitation or jarring during upshifts and downshifts.Suitable for steady cruising, rapid gear changes, climbing, and high-speed riding.Actual shifting performance may be influenced by factors such as: shifter and derailleur models; chain speed compatibility and wear level; derailleur hanger alignment; tension and limit settings; shift cable tension; chain length; and cassette/drivetrain compatibility.Freehub and Drivetrain Compatibility Notes11-Speed Version: Compatible with standard road HG freehubs that meet length and structural requirements; requires matching 11-speed road shifters, derailleurs, and chains. Standard 11-speed road cassettes generally cannot be installed directly onto shorter 8/9/10-speed HG freehubs;please verify freehub length before purchase.12-Speed Version: Compatible with standard road HG freehubs meeting installation requirements; requires matching 12-speed shifters, derailleurs, and chains. Determine the need for a spacer based on the specific freehub structure, cassette width, and the locking status after installation.Do not ride if the cassette wobbles or the lockring cannot be tightened securely. Important Note:The 36T model falls outside the official compatibility range of common derailleurs mentioned above. Forced installation may result in: insufficient chain length, abnormal derailleur tension, the guide pulley rubbing against large cogs, dropped chains/inaccurate shifting/noise when using the small chainring with large cassette cogs,or abnormal derailleur operating angles. It is recommended to pair this with a derailleur system that explicitly supports 36T and to re-check chain length and tension.This product is designed as a lightweight road cassette intended for proper installation, correct adjustment, and standard road cycling use.Cassettes are drivetrain wear items; the following issues are not considered product defects (placing an order constitutes acceptance of these terms):Skipping gears or noise caused by using an old chain; guide pulley rubbing due to insufficient derailleur capacity; incorrect chain length; bent derailleur hanger or incorrect shifting adjustment; lockring not tightened to specifications; cog damage caused by forced shifting under high load;installation on an incompatible freehub or with the wrong number of speeds; normal wear marks on the iridescent finish caused by chain friction.Not compatible with: XD, XDR, MS, or short mountain bike HG freehubs. Please verify freehub type, drivetrain speed, derailleur capacity, and chain length before purchase.The 11-speed and 12-speed versions are distinct products; please select the correct speed version to match your shifters, derailleur, chain, and overall drivetrain system—do not mix them.