GRX 1x 12-speed cassette
Shimano XT CS-M8100-12 12-Speed Cassette for GRX 1x
Shimano's recommended wide-range cassette for GRX 12-speed 1x builds, with a 10T top gear and either a 45T or 51T low. It needs a Micro Spline freehub.
Highlights
Why we rate it
Made for single-ring gravel
Pairs with the GRX RD-RX822 (GS for 10-45T, SGS for 10-51T) to give a huge spread from one chainring.
Two ranges
10-45T keeps steps tighter for fast gravel; 10-51T gives a very low gear for loaded bikes and steep tracks.
Light mixed build
Plated steel sprockets with the two largest in aluminium keep weight close to 460g.
Hyperglide+ shifting
Lets you change gear under load with far less hesitation than older Hyperglide cassettes.
Micro Spline fitment
Uses Shimano's Micro Spline freehub, allowing the 10T sprocket.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Model code
- CS-M8100-12
- Speeds
- 12
- Ratios
- 10-45T, 10-51T
- 10-45T sprockets
- 10-12-14-16-18-21-24-28-32-36-40-45
- 10-51T sprockets
- 10-12-14-16-18-21-24-28-33-39-45-51
- Weight
- 461g (10-45T), 470g (10-51T)
- Materials
- Plated steel sprockets 1-10, aluminium sprockets 11-12, aluminium carrier
- Freehub
- Shimano Micro Spline
- GRX derailleur
- RD-RX822-GS (10-45T max), RD-RX822-SGS (10-51T)
- Chain
- Shimano 12-speed HG+ (CN-M8100 recommended)
In the box
- Includes
- Cassette
- Includes
- Lockring
Ordering
Available from The Cycle Collective
Available to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.
Product Information
Choose your roast, grid and frequency to keep ensure every day starts right. Y
Subscribers enjoy up to 20% off our standard coffee price plus from time to time there will be exclusive offers, freebies and competitions.
SAVE MONEY. MODIFY AT ANY TIME. PAUSE, SKIP OR CHANGE
Close all zippers before washing
Wash at max 30°C
Hand washing with cold water (or gentle wash cycle)Using mild, high quality detergent
Drip drying in shade, do not machine dry
Avoiding ironing and bleachThe instructions on your garment’s label
Sorting your clothing by color
Avoiding fabric softener.
Our clothing isn’t meant to be dry cleaned and soaking clothing is not ideal
Storage
Unused sealed sachets should be stored inside the box in a well-ventilated, dry place and protected from moisture, heat and direct sunlight. Can be stored for up to 3 years.
Size
Each sachet contains 30g powder.2 x 30g sachets per carton box.
Makes 2x litres of bike cleaner
100% plastic free packaging
Readily biodegradable ingredients
100% water free
Refill your old bottle and help reduce plastic waste
92% saving in packaging compared to 2 x 1L bike cleaner
100% environmentally friendly ingredients, including plant based raw materials
Supplied in a compostable sachet and printed with vegetable inks
FSC recycled card box containing 2 x sachets – that makes 2L of bike cleaner
Safe on all parts and surfaces including carbon fibre
Will not harm seals, cables, disc brake pads or rotors
Alkaline based and free from alcohol, CFCs, EDTA, solvents or acids
Vegan & vegetarian friendlyCruelty free, not tested on animals
Sachet Instructions
1. Grab your empty old bottle of Muc-Off. (You may need a pair of adjustable pliers to remove the trigger from the bottle). Or purchase our Bottle for Life.
2. Fill up to the shoulders of the bottle with 1 litre of lukewarm water for faster formula activation!
3. Carefully cut one corner of the sachet open along the diagonal cut lines.
4. You can carefully pour the sachet straight into the top of the bottle. Or using the box, fold the inside of the lid together using the printed lines as a guide and use this as a funnel to pour the powder into your bottle. (Please see our video for full instructions on this.
5. Screw your spray trigger back onto the top of the bottle. Ensure it’s tight!
6. Shake the bottle vigorously for 30-60 seconds to activate the formula. If you notice any undissolved powder simply keep shakin’ it!
7. Go clean that filthy bike!
More features
