The RIRO Carbon Fiber Crankset is a lightweight, affordable option that generally performs well when installed with compatible bottom brackets, but it has known compatibility issues with BB86 and some thread-together BBs, and durability concerns regarding the aluminum axle and preload design. The 24mm version weighs around 388g and costs $75-$90, while the 29mm DUB version is slightly heavier and pricier. Users report smooth performance over hundreds of kilometers, but some have experienced seizing, bonding failure, or bolt cracking.
Pros
- Lightweight: about 388g for 24mm version, saving ~100g over alloy cranks.1
- Good value for money: priced around $75-$90, much cheaper than branded carbon cranksets.1
- Durable construction with no cracks or delamination after over a year of use (2,500+ miles).2
- Superior single bolt securing mechanism similar to SRAM.2
- Better quality chain rings that last longer than those on other crank sets.2
- Shifts well and looks great.2
- Smooth performance once installed correctly; no issues over hundreds of kilometers.13
Cons
- Compatibility issues with certain bottom brackets (e.g., BB86, some thread-together BBs) causing cranks to seize or bind.1
- Preload ring design is flawed: too wide, contacts BB shell instead of bearings, leading to seizing.1
- Aluminum axle may be too soft or short, causing drive side crank arm to sit too deep and overload bearings; durability concerns including wear from steel bearings and potential bonding failure of non-drive crank arm.1
- Crank retaining bolt can crack or snap under excessive use or over-tightening.2
- No torque specification provided with some units; risk of stripping bolt if over-tightened.1
- Only available in a single crank length (170mm), limiting fit options.1
- Newer version is slightly heavier due to chunkier design and 29mm axle.2
Key Facts
- Weight: 24mm version ~388g with 52-36 chainrings (version 1 ~377g); 29mm version ~594g; original version 568g.12
- Price: 24mm version $75-$90; 29mm version around £90; also seen at £130 and later ~£80.12
- Axle: 24mm aluminum; 29mm version uses SRAM DUB 29mm standard.12
- Chainring interface: 24mm version uses direct mount; 29mm version uses 3-bolt interface, compatible with 4-bolt adapters for Shimano chainrings.1
- Bottom bracket compatibility: works with Shimano BSA threaded and T47 internal cup 86.5mm BBs; not recommended for BB86 with certain thread-together BBs.1
- Torque spec for crank bolt: 35-40Nm (printed on some units).1
- Chainrings are 7075 T6 aluminum; newer version has chunkier rings (191g vs 181g) and five shift inserts vs four.2
Reviews & Ratings
13:13The reviewer discusses the RIRO Carbon Fiber Crank extensively, highlighting its performance and design improvements over other carbon crank sets. They mention using it for over a year with more than 2,500 miles, noting its durability and solid construction. The crank set features a single bolt securing mechanism similar to SRAM, which the reviewer praises as superior to other designs. They also appreciate the better quality chain rings that come with it, which have lasted longer than those on other crank sets. However, they note an issue with the original extraction bolt cracking under excessive use, though they consider this an uncommon scenario. The reviewer also mentions a newer version of the RIRO crank set with a different design and heavier weight but improved features like a 29mm axle and better shifting performance.
20:34The reviewer discusses the RIRO carbon crankset as their preferred choice for a value build, highlighting its aesthetics, shifting performance, and low weight, but notes two specific caveats regarding durability.
17:37The reviewer briefly mentions the RIRO Carbon Fiber Crank Road Bike 11/12 Speed 50-34/53-39T Direct Mount Bicycle Crankset 170mm 46/48/50/52T Chainring Bike Parts but does not provide detailed analysis.
The RIRO Carbon Crankset is a lightweight aftermarket crankset available in 24mm aluminum axle and 29mm (DUB) versions. Users report weights around 388g for the 24mm version (with 52-36 chainrings) and note it is significantly lighter than alloy alternatives. It is praised for its low price (around $75-$90) and smooth performance when paired with compatible bottom brackets, especially Shimano BSA threaded and T47 internal cup BBs. However, the 24mm aluminum axle version has known compatibility issues with certain bottom brackets (e.g., BB86, some thread-together BBs) due to axle length and preload ring design, leading to seizing. There are also concerns about long-term durability of the aluminum axle and bonding failure of the non-drive crank arm. The 29mm version uses a 3-bolt interface and requires a DUB bottom bracket.
AI Summary
Pros
- Lightweight: about 388g for 24mm version, saving ~100g over alloy cranks and ~80-100g with alloy axle vs steel axle.
- Good value for money: priced around $75-$90, much cheaper than branded carbon cranksets.
- Works well with Shimano BSA threaded bottom brackets and T47 internal cup 86.5mm BBs.
more pros in the review
Cons
- Compatibility issues with certain bottom brackets (e.g., BB86, some thread-together BBs) causing cranks to seize or bind.
- Preload ring design is flawed: too wide, contacts BB shell instead of bearings, leading to seizing.
- Aluminum axle may be too soft or short, causing drive side crank arm to sit too deep and overload bearings.
more cons in the review
Key Points
- Available in 24mm aluminum axle and 29mm (DUB) versions.
- 24mm version weight: ~388g (with 52-36 chainrings); version 1 was ~377g.
- 29mm version uses 3-bolt chainring interface; 4-bolt adapters available.
more key points in the review
Hey mate, I have a Riro at the 50/34 chainring. Has around 500km on it so far, so I cant comment on longevity. No issues installing, I do have a T47-79BB.
Where to Buy
RIRO Carbon Faser Kurbel Rennrad 11/12 Geschwindigkeit 50-34/53-39T Direkt Montieren Fahrrad Kurbelgarnitur 170mm 46/48/50/52T Kettenblatt Fahrrad Teile - AliExpress 18
Specifications
Attributes
Spotted an error in the specs? Help us correct it — sign in or create an account.
Questions about RIRO Carbon Fiber Crank Road Bike 11/12 Speed 50-34/53-39T Direct Mount Bicycle Crankset 170mm 46/48/50/52T Chainring Bike Parts
Sign up and share your experience — help other riders decide!
Create Account & Review