Shimano Altus RD-M310 8S Groupset MTB Bike Chain HG71/HG40 KMC 8V Mountain Bike Cassette bicycle HG31 8S K7 32T 34T Bike Kit
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Specifications
- Brand Name
- SHIMANO
- Origin
- Mainland China
- Type
- Rear Derailleur
- Components
- Derailleurs
- Model Number
- RD M310
Product Description
About SHIMANO RD-M310
Model: Altus, M310
Color: Black
Speed: 8S, also for 7S
Teeth of freewheel: 34T max, 11T min
Weight:about 300g
Some options without the RD-M310
About SHIMANO HG31-8 Cassette
Brand: Shimano
Model: CS HG31-8 flywheel
Type: Cassette flywheel
Speed ratio: 8/24 speed
Origin: Indonesia
Weight: 32T about 310g, 34T about 327g
Gear ratio:
32T: 11-13-15-18-21-24-28-32T
34T: 11-13-15-17-20-23-26-34T
Applicable models: mountain bike, station wagon, folding bed
Some options without the Cassette
About the Chain
Brand: SHIMANO/KMC
Model: SHIMANO CN-HG71/CN-HG40/KMC X8PL
Links: 112 Links
Some options without the Chain
Pros & Cons
Pros
- Genuine Shimano Altus RD-M310 components for reliable mountain bike performance
- Compatible with both 7-speed and 8-speed drivetrains for broad fitment
- Supports a wide range of freewheel tooth counts for flexible gearing options
- Available with optional cassette components to build a complete groupset
Cons
- Some listing variants do not include the rear derailleur, leading to unclear pricing
- Product description is cut off, leaving full component details undisclosed
- Only available in black color, with no alternative color options
- No installation tools or instructions included in the base kit
Common Questions
What speed drivetrains is the RD-M310 rear derailleur compatible with?
The RD-M310 derailleur is designed for 8-speed drivetrains, and also works with 7-speed setups.
What is the maximum and minimum freewheel tooth count supported by this derailleur?
This derailleur supports freewheels with a minimum of 11 teeth and a maximum of 34 teeth.
What brand and model is the included cassette in this groupset?
The included cassette is the Shimano CS HG31-8, an 8-speed mountain bike cassette.
What is the approximate weight of the RD-M310 rear derailleur?
The RD-M310 rear derailleur weighs approximately 300 grams.
Do all listing options for this kit include the rear derailleur?
No, some listing variants do not include the RD-M310 rear derailleur, per the product description.
Product information last updated on January 5, 2026