MTB wireless rear derailleur
SRAM S500 Eagle AXS Rear Derailleur
SRAM's 2026 non-T-Type Eagle AXS mech for bikes on a conventional hanger. It replaces the GX, X01 and XX1 Eagle AXS derailleurs and suits drop-bar mullet builds with 10-50T or 10-52T Eagle cassettes.
Highlights
Why we rate it
One replacement for three
Directly replaces GX, X01 and XX1 Eagle AXS derailleurs on existing bikes.
Conventional hanger
Fits standard hangers including SRAM UDH, so no Full Mount frame is needed.
Overload clutch
Protects the motor and gearbox when the mech takes a hit.
Type 3 cage damping
Keeps the chain quiet and secure on rough descents.
Mullet-friendly
Pairs with AXS drop-bar controllers to run Eagle range on a gravel bike.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Model
- RD-S500-E-B1
- Part number
- 00.7518.207.000
- Speeds
- 12
- Max sprocket
- 52T
- Total capacity
- 42T
- Cassettes
- Eagle 12-speed 10-50T and 10-52T (non-T-Type)
- Chain
- SRAM Eagle 12-speed
- Drivetrain
- 1x only
- Mount
- Standard derailleur hanger (not Full Mount)
- Battery
- SRAM AXS battery, sold separately
- Colour
- Black
In the box
- Includes
- S500 Eagle AXS rear derailleur (battery not included)
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
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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!
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