This ultra-lightweight cassette offers excellent value and vibrant aesthetics with a unique two-piece aluminum/steel construction, but durability is a significant trade-off, especially for riders who frequently use the aluminum climbing gears in hilly terrain.
Pros
- Extremely lightweight compared to standard steel cassettes
- Significant cost savings versus premium brand equivalents
- Available in multiple vibrant anodized colors
- Unique two-piece construction for weight optimization
Cons
- Aluminum climbing gears wear quickly, especially with frequent use in hilly terrain
- Shifting quality not as smooth as official Shimano Hyperglide cassettes
- Can be noisier during operation
- Durability limited to approximately 1,500-2,000 miles for frequent climbing gear users
Key Facts
- Weight ranges from 112g to 141g depending on model (e.g., 117g for 11-28T 11-speed)
- Two-piece construction: higher gears milled from single chromoly steel block, climbing gears milled from aluminum block
- Compatible with 11-speed and 12-speed road/gravel drivetrains using HG freehub standard
Reviews & Ratings
The reviewer analyzes a super lightweight cassette from AliExpress, which is the ZTTO Ultimate model. They describe its unique two-piece construction, with the front sprockets milled from a single block of steel and the rear sprockets milled from a single block of aluminum, pinned together to save weight. They weigh it at 122g and compare it to a heavier, standard 11-34t steel cassette. They note they have used an identical gold version for about 1,000 miles, showing visible wear on the aluminum teeth but with shifting still perfect. They caution that durability is a trade-off, as the aluminum teeth will wear quickly if used frequently in hilly terrain. They mention the price has dropped since launch, and they purchased it for just over 60 pounds.
AI Summary
Pros
- Extremely lightweight (122g)
- Unique, weight-saving two-piece construction
- Shifting performance remains perfect even after 1,000 miles of use
- Prices have dropped significantly since initial release
Cons
- Aluminum rear sprockets are softer than steel chains and show visible wear
- Durability is a concern, especially in hilly areas where the larger aluminum cogs are used frequently
- Will wear through quite quickly if used often in hilly terrain
The reviewer states that the ZTTO SLR Gen 3 cassettes are a great choice, highlighting their low weight, low price, and availability in many colors. They note that durability depends heavily on usage, with lower mileage expected if frequently using the aluminum climbing gears.
AI Summary
Pros
- Incredibly lightweight (117g for the model mentioned, compared to 193g for a Shimano Dura-Ace equivalent)
- Great value for money (costs around 60-70 quid)
- Available in loads of different colors
- Uses a two-piece aluminum and steel design
Cons
- Lower durability in the aluminum climbing gears (you'll be lucky to get 2,000 miles out of these if used frequently in mountainous terrain)
The reviewer discusses the ZTTO Ultimate cassette as part of the evolution of lightweight, colorful cassettes available on AliExpress. They highlight its vibrant anodized colors, lightweight construction, and significant cost savings compared to its initial release price.
AI Summary
Pros
- Incredibly cool look with super vibrant anodized colors
- Very lightweight (117g for the 11-28T 11-speed model)
- Significantly cheaper than when this type of cassette first came out (cost them ยฃ61)
Cons
- Durability is a trade-off, especially for riders in hilly areas who use the aluminum climbing gears a lot (may only get 1500 miles)
- Shifting quality is not quite as smooth as an official Shimano Hyperglide cassette
- Can be a little bit noisier
Where to Buy
ZTTO Ultimate 11/12 Speed Rennrad Kassette 11s 12s 11-28/30/32/34/36T ULT Kettenrad Freilauf 112g~141g Road Gravel K7 HG - AliExpress 18
Questions about ZTTO Ultimate 11/12 Speed Road Bike Cassette 11s 12s 11-28/30/32/34/36T ULT Sprocket Freewheel 112g~141g Road Gravel K7 HG
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