The SPEDAO SLR2 11-speed cassette is widely praised for its light weight (around 180g) and durable single-piece steel construction, offering significant weight savings over standard cassettes at a low price. It is compatible with standard HG freehubs but not with proprietary systems like Shimano CUES. Long-term user reports indicate reliable performance over thousands of kilometers, though some past AliExpress cassettes had issues.
Pros
Cons
Key Facts
- Weighs approximately 180-182 grams, compared to a Shimano 105 cassette at 272 grams1
- Made from a single piece of steel with an aluminum spider built into the back1
- Available in 11-25, 11-28, 11-32, and 11-34T ratios1
- Compatible with standard 11-speed HG freehubs such as Shimano 105 or Ultegra, but not with Shimano CUES groupsets1
- Price ranges from about £40 to £551
- One user reported 8000 km of use with the coating worn at contact points but still functioning well2
Reviews & Ratings
18:22The reviewer discusses an AliExpress cassette, referred to as the Speed Out Cassette, which appears to be the Ultralight SPEDAO SLR2 Road Cassette. He initially planned to include it as an upgrade for a Canyon Endurance CF6 but had to remove it because the Canyon uses a proprietary Q's (Cues) groupset that is incompatible with HG cassettes. However, he notes that for a standard 11-speed bike like Shimano 105 or Ultegra, the cassette would save over 140 grams for around £55. He also mentions that he found these cassettes to be durable despite being fully steel.
10:10The reviewer discusses swapping the original Altegra cassette for a SpeedOW monolock cassette purchased from AliExpress. They praise it as one of their favorite AliExpress products, highlighting its single-piece steel construction for durability and its light weight. They note it is significantly lighter than even a Dura-Ace cassette and is very affordable.
11:32The reviewer states that the SPEDAO SLR2 cassette on their hill climb bike has been 'absolutely brilliant'. They praise its light weight, shift quality, and durability, especially under the demanding conditions of hill climb racing.
12:08The reviewer briefly mentions the Ultralight SPEDAO SLR2 Road Cassette 11 Speed 11-25/28/32/34T Bicycle Freewheel CNC K7 11V HG Sprocket For R9100 Bike Parts but does not provide detailed analysis.
09:52The reviewer does not mention the 'Ultralight SPEDAO SLR2 Road Cassette' at any point in the video. The entire transcript is dedicated to analyzing lightweight cassettes from the brand ZTTO, specifically their 'SLR Gen 3' model and other generations. The reviewer discusses a specific failure of a ZTTO cassette, analyzes its design, compares different sizes, and discusses alternatives like the ZTTO SLR Gen 2 and steel cassettes from ZTTO. The brand SPEDAO is not referenced.
Die Spedaos (vormals Sroad) funktionieren bei einigen hier sehr gut. Meine eine, die noch im Betrieb ist, ist jetzt 8000km gelaufen. Die Beschichtung ist selbstverständlich an den Kontaktstellen zur Kette nicht mehr wie neu. Aber noch geht alles gut, bin jetzt bei Kette #2 mit der Kassette. Bin gespannt ob Kette 3 dann auch noch gut geht. Ich hatte insgesamt 3 Kassetten: Die zweite ist wegen Umbau auf 12sp gerade im Lager, lief aber bestimmt auch 5000km unproblematisch bei jedem Mistwetter. Die dritte hatte ich samt Rad verkauft und keine Beschwerden mitbekommen.
Where to Buy
Ultraleichte spedao slr2 straÃen kassette 11 geschwindigkeit 11-25/28/32/34t fahrrad freilauf cnc k7 11v hg kettenrad für r9100 fahrrad teile - AliExpress 18
SPEDAO Road Cassette Ultralight 11 Speed 11-25/28/32/34T CNC Bike Freewheel K7 11V HG Sprocket For R9100 Road Bicycle Flywheels
Specifications
Attributes
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