Reviews & Ratings
Trace Velo on YouTube3 months ago
00:09:52@ 07:10
The reviewer analyzes the ZTTO Ultraight cassette, focusing on a structural failure in the 11-36T version. They explain the design flaw, compare it to the more robust 11-28T version they use, and discuss how use case and sprocket size affect failure risk. They conclude these cassettes prioritize weight over durability.
AI Summary
Pros
- Lightweight (prioritizes minimal mass)
- Visually appealing with colors
- Good value (built to a price point)
- Shifting performance is decent (90-95% of major brands)
Cons
- Potential structural failure in larger sizes (11-34T, 11-36T) due to design
- Sharp internal edges and 90° corners act as stress risers
- Thin support arms create a cantilever beam effect on top sprockets
- Larger sprockets are more flexible, increasing failure risk
- Noisier than official Shimano/SRAM cassettes
- Aluminium teeth can snap if shifting under load
- Questionable safety margin due to extreme material removal
Key Points
- Failure observed on an 11-36T version used in cyclocross.
- Design differs by size: only the 11-28T version has a safer design where only the largest sprocket uses thin support arms.
- Larger sprockets act as longer lever arms, increasing peel-off forces.
- Use case matters: spiky power delivery on rough terrain stresses the cassette more.
- Cassettes are CNC-machined from aluminium, pushing material limits.
- Recommends steering clear of the 11-36T and 11-34T versions.
Purchase
Where to Buy
ZTTO Ultraight 11 12 Speed Road Bike Cassette 11s 12s 11-28/30/32/34/36T ULT Sprocket 11s 34T Gold Flywheel 11V 12V Gravel K7 HG
aliexpress.com#1005008490081269Affiliate · Trace Velo
aliexpress.comSupport MyBikePartsAffiliate · MyBikeParts
🇺🇸$100.74
🇫🇷€79.99
🇬🇧£75.59
4.8 (64)
Checked about 2 hours ago
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