Click & Collect in store - 24 hours
Click & Collect partner - 2-3 days*
Home delivery - 48 hours
Rodrigues - 7 days*
Cart
Your cart is empty


Designed for replacing the derailleur hanger on your ROCKRIDER MTB
Allows you to find the fluidity of your rear derailleur
ROCKRIDER ST 520 27.5\"/ST 540 27.5\"/ST900/8.1/9.1 RIVERSIDE 500/900/920 E-ST 500
Supplied with 2 fixing screws
Repair your product and give your sports equipment a second life!
Size guide

To take your measurements:
|
Chest size: (in cm) |
84-87 | 88-91 | 92-95 | 96-99 | 100-103 | 104-107 | 108-113 | 114-118 | 119-123 | 124-129 | 130-135 | 136-141 | 142-146 | 147-153 | 154-159 |
| Size US | XS | XS/S | S | S/M | M | M/L | L | L / XL | XL | XL / 2XL | 2XL | 2XL / 3XL | 3XL | 3XL / 4XL | 4XL |
| Size EU | XS | S | M | M/L | L | L / XL | XL | XL / 2XL | 2XL | 2XL / 3XL | 3XL | 3XL / 4XL | 4XL | 4XL / 5XL | 5XL |
|
70-73 | 74-77 | 78-81 | 82-85 | 86-89 | 90-95 | 96-100 | 101-105 | 106-111 | 112-117 | 118-123 | 124-129 | 130-135 | 136-141 | 142-147 | |
| EU size - Europe | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | |
| Universal size | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL | 5XL |
|
Waist size: (in cm) |
20.25-20.85 | 20.86-21.5 | 21.51-22.15 | 22.16-22.8 | 22.81-23.45 | 23.46-24.1 | 24.11-24.75 |
| Universal size | XS | S | M | L | XL | 2XL | 3XL |
|
Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |

To take your measurements:
|
Chest size: (in cm) |
76-79 | 80-83 | 84-87 | 86-91 | 92-95 | 96-99 | 100-103 | 104-107 | 108-113 | 114-118 | 119-123 | 124-129 | 130-135 | 136-141 | 142-146 | 147-153 |
| UK size | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 |
| EU size - Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
| Universal size | 3XS | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL |
|
Under Bust Size: (in cm) |
63-67 | 68-72 | 73-77 | 78-82 | 83-87 | 88-92 | 93-97 | 98-102 | 103-107 | 108-112 | 113-117 |
| Size | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 |
| UK size | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 |
For high end swimwear with back ties, if your size is not available, you can wear another size with similar band size.
Examples: with a size 95C , you can wear a 100B by tightening the rear link more , or a 90D by tightening the back link less .
| Chest size in cm) | ||||||||
| Section A-A | 72-74 | 77-79 | 82-84 | 87-89 | 92-94 | 97-99 | 102-104 | 107-109 |
| Cut A | 75-77 | 80-82 | 85-87 | 90-92 | 95-97 | 100-102 | 105-107 | 110-112 |
| Cut B | 78-80 | 83-85 | 88-90 | 93-95 | 98-100 | 103-105 | 108-110 | 113-115 |
| Cut C | 81-83 | 86-88 | 91-93 | 96-98 | 101-103 | 106-108 | 111-113 | 116-118 |
| Cut D | 84-86 | 89-91 | 94-96 | 99-101 | 104-106 | 109-111 | 114-116 | 119-121 |
| Cut E | 87-89 | 92-94 | 97-99 | 102-104 | 107-109 | 112-114 | 117-119 | 122-124 |
| Cut F | 90-92 | 95-97 | 100-102 | 105-107 | 111-113 | 115-117 | 120-122 | 125-127 |
| Cut G | 93-95 | 98-100 | 103-105 | 108-110 | 113-115 | 118-120 | 123-125 | 128-130 |
|
Waist size: (in cm) |
57-58 | 58-62 | 63-65 | 66-69 | 70-73 | 74-77 | 78-84 | 85-90 | 91-96 | 97-102 | 103-108 | 109-114 | 115-120 | 121-128 | 129-132 | 133-139 |
| UK size | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 |
| EU size - Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
| Universal size | 3XS | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL |
| Size: (cm) |
56-59 | 60-63 | 64-67 | 68-71 | 72-75 | 76-79 | 80-93 | 84-89 | 90-95 | 96-101 | 102-107 | 108-113 | 114-119 | 120-125 | 126-131 | 132-137 |
| Hipsize: (cm) |
86-89 | 90-93 | 94-97 | 98-101 | 102-105 | 106-109 | 110-113 | 114-119 | 120-125 | 126-131 | 132-137 | 138-143 | 144-149 | 150-155 | 156-161 | 162-167 |
| EU size - Europe | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 |
| Universal size | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL | 5XL |
|
16.25-17.1 | 17.11-17.95 | 17.96-18.8 | 18.81-19.5 | 19.51-20.1 | 20.11-20.7 | 20.71-21.3 | |
| Universal size | 2XS | XS | S | M | L | XL | 2XL |
|
Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |

To take your measurements:
| Height: (in cm) |
56-63 | 64-70 | 71-76 | 77-82 | 83-89 | 90-97 | 98-104 | 105-114 | 115-124 | 125-132 | 133-142 | 143-152 | 153-162 |
| Universal size | 3 Months | 6 to 9 months | 9 to 12 months | 18 Months | 2 Years | 3 Years | 4 Years | 5 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
| Size: (in cm) |
56-63 | 64-70 | 71-76 | 77-82 | 83-89 | 90-97 | 98-104 | 105-114 | 115-124 | 125-132 | 133-142 | 143-150 | 151-160 |
| Universal size | 3 Months | 6 to 9 months | 9 to 12 months | 18 Months | 2 Years | 3 Years | 4 Years | 5 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
| Hand size: (in cm) |
13.9-14.9 | 14.91-15.9 | 15.91-16.9 | 16.91-17.8 | 17.81-18.6 | 18.61-19.45 |
| Universal size | 4 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
|
Head measurement: (in cm) |
41.1 | 43.6 | 44.9 | 45.7 | 47.4 | 48.6 | 49.7 | 50.6 |
| Size | 3 Months | 6 Months | 9 Months | 12 Months | 18 Months | 2 Years | 3 Years | 4 Years |
| Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |
Size guide

To take your measurements:
|
Chest size: (in cm) |
84-87 | 88-91 | 92-95 | 96-99 | 100-103 | 104-107 | 108-113 | 114-118 | 119-123 | 124-129 | 130-135 | 136-141 | 142-146 | 147-153 | 154-159 |
| Size US | XS | XS/S | S | S/M | M | M/L | L | L / XL | XL | XL / 2XL | 2XL | 2XL / 3XL | 3XL | 3XL / 4XL | 4XL |
| Size EU | XS | S | M | M/L | L | L / XL | XL | XL / 2XL | 2XL | 2XL / 3XL | 3XL | 3XL / 4XL | 4XL | 4XL / 5XL | 5XL |
|
70-73 | 74-77 | 78-81 | 82-85 | 86-89 | 90-95 | 96-100 | 101-105 | 106-111 | 112-117 | 118-123 | 124-129 | 130-135 | 136-141 | 142-147 | |
| EU size - Europe | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | |
| Universal size | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL | 5XL |
|
Waist size: (in cm) |
20.25-20.85 | 20.86-21.5 | 21.51-22.15 | 22.16-22.8 | 22.81-23.45 | 23.46-24.1 | 24.11-24.75 |
| Universal size | XS | S | M | L | XL | 2XL | 3XL |
|
Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |

To take your measurements:
|
Chest size: (in cm) |
76-79 | 80-83 | 84-87 | 86-91 | 92-95 | 96-99 | 100-103 | 104-107 | 108-113 | 114-118 | 119-123 | 124-129 | 130-135 | 136-141 | 142-146 | 147-153 |
| UK size | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 |
| EU size - Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
| Universal size | 3XS | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL |
|
Under Bust Size: (in cm) |
63-67 | 68-72 | 73-77 | 78-82 | 83-87 | 88-92 | 93-97 | 98-102 | 103-107 | 108-112 | 113-117 |
| Size | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 |
| UK size | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 |
For high end swimwear with back ties, if your size is not available, you can wear another size with similar band size.
Examples: with a size 95C , you can wear a 100B by tightening the rear link more , or a 90D by tightening the back link less .
| Chest size in cm) | ||||||||
| Section A-A | 72-74 | 77-79 | 82-84 | 87-89 | 92-94 | 97-99 | 102-104 | 107-109 |
| Cut A | 75-77 | 80-82 | 85-87 | 90-92 | 95-97 | 100-102 | 105-107 | 110-112 |
| Cut B | 78-80 | 83-85 | 88-90 | 93-95 | 98-100 | 103-105 | 108-110 | 113-115 |
| Cut C | 81-83 | 86-88 | 91-93 | 96-98 | 101-103 | 106-108 | 111-113 | 116-118 |
| Cut D | 84-86 | 89-91 | 94-96 | 99-101 | 104-106 | 109-111 | 114-116 | 119-121 |
| Cut E | 87-89 | 92-94 | 97-99 | 102-104 | 107-109 | 112-114 | 117-119 | 122-124 |
| Cut F | 90-92 | 95-97 | 100-102 | 105-107 | 111-113 | 115-117 | 120-122 | 125-127 |
| Cut G | 93-95 | 98-100 | 103-105 | 108-110 | 113-115 | 118-120 | 123-125 | 128-130 |
|
Waist size: (in cm) |
57-58 | 58-62 | 63-65 | 66-69 | 70-73 | 74-77 | 78-84 | 85-90 | 91-96 | 97-102 | 103-108 | 109-114 | 115-120 | 121-128 | 129-132 | 133-139 |
| UK size | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 |
| EU size - Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
| Universal size | 3XS | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL |
| Size: (cm) |
56-59 | 60-63 | 64-67 | 68-71 | 72-75 | 76-79 | 80-93 | 84-89 | 90-95 | 96-101 | 102-107 | 108-113 | 114-119 | 120-125 | 126-131 | 132-137 |
| Hipsize: (cm) |
86-89 | 90-93 | 94-97 | 98-101 | 102-105 | 106-109 | 110-113 | 114-119 | 120-125 | 126-131 | 132-137 | 138-143 | 144-149 | 150-155 | 156-161 | 162-167 |
| EU size - Europe | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 |
| Universal size | 2XS | XS | S | M | M-L | L | L-XL | XL | XL-2XL | 2XL | 2XL-3XL | 3XL | 3XL-4XL | 4XL | 4XL-5XL | 5XL |
|
16.25-17.1 | 17.11-17.95 | 17.96-18.8 | 18.81-19.5 | 19.51-20.1 | 20.11-20.7 | 20.71-21.3 | |
| Universal size | 2XS | XS | S | M | L | XL | 2XL |
|
Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |

To take your measurements:
| Height: (in cm) |
56-63 | 64-70 | 71-76 | 77-82 | 83-89 | 90-97 | 98-104 | 105-114 | 115-124 | 125-132 | 133-142 | 143-152 | 153-162 |
| Universal size | 3 Months | 6 to 9 months | 9 to 12 months | 18 Months | 2 Years | 3 Years | 4 Years | 5 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
| Size: (in cm) |
56-63 | 64-70 | 71-76 | 77-82 | 83-89 | 90-97 | 98-104 | 105-114 | 115-124 | 125-132 | 133-142 | 143-150 | 151-160 |
| Universal size | 3 Months | 6 to 9 months | 9 to 12 months | 18 Months | 2 Years | 3 Years | 4 Years | 5 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
| Hand size: (in cm) |
13.9-14.9 | 14.91-15.9 | 15.91-16.9 | 16.91-17.8 | 17.81-18.6 | 18.61-19.45 |
| Universal size | 4 Years | 6 Years | 8 Years | 10 Years | 12 Years | 14 Years |
|
Head measurement: (in cm) |
41.1 | 43.6 | 44.9 | 45.7 | 47.4 | 48.6 | 49.7 | 50.6 |
| Size | 3 Months | 6 Months | 9 Months | 12 Months | 18 Months | 2 Years | 3 Years | 4 Years |
| Head measurement: (in cm) |
51.1 | 52 | 52.9 | 53.8 | 54.7 | 55.6 | 56.5 | 57.4 | 58.3 | 59.2 | 60.1 |
| Size | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 |
Rockrider ST 500/520 - Riverside 500/900 derailleur hanger
Default / One size / 8527894
Decathlon Bagatelle
Decathlon Bagatelle
80832
Moka
Maurice
Decathlon Beau Plan
Beautiful Roundabout Plan
21001
Grapefruits
Maurice
Free home delivery from Rs 2,500
We offer several delivery methods:
Free home delivery from Rs 2,500
We offer several delivery methods:
Return and exchange
You have up to 90 days to return your items.
More information via this lien.
Return and exchange
You have up to 90 days to return your items.
More information via this lien.
Designed for replacing the derailleur hanger on your ROCKRIDER MTB
Allows you to find the fluidity of your rear derailleur
ROCKRIDER ST 520 27.5\"/ST 540 27.5\"/ST900/8.1/9.1 RIVERSIDE 500/900/920 E-ST 500
Supplied with 2 fixing screws
Repair your product and give your sports equipment a second life!
Designed for replacing the derailleur hanger on your ROCKRIDER MTB
Compatibility: ROCKRIDER ST 520 27.5"/ST 540 27.5"/ST900/8.1/8.0 /9./9.2/9.3 and 9.9 RIVERSIDE 500/900/920 E-ST 500 Material: Aluminum
When changing the derailleur hanger, check that the cage of your derailleur is straight, otherwise change it or change the derailleur.
The Workshop technicians in your Decathlon store are on hand to help you change parts on your bike. Do not hesitate to ask them!
Allows you to find the fluidity of your rear derailleur

ROCKRIDER ST 520 27.5"/ST 540 27.5"/ST900/8.1/9.1 RIVERSIDE 500/900/920 E-ST 500

Supplied with 2 fixing screws

Repair your product and give your sports equipment a second life!
Designed for replacing the derailleur hanger on your ROCKRIDER MTB
Designed for replacing the derailleur hanger on your ROCKRIDER MTB
Compatibility: ROCKRIDER ST 520 27.5"/ST 540 27.5"/ST900/8.1/8.0 /9./9.2/9.3 and 9.9 RIVERSIDE 500/900/920 E-ST 500 Material: Aluminum
When changing the derailleur hanger, check that the cage of your derailleur is straight, otherwise change it or change the derailleur.
The Workshop technicians in your Decathlon store are on hand to help you change parts on your bike. Do not hesitate to ask them!
Allows you to find the fluidity of your rear derailleur

ROCKRIDER ST 520 27.5"/ST 540 27.5"/ST900/8.1/9.1 RIVERSIDE 500/900/920 E-ST 500

Supplied with 2 fixing screws

Repair your product and give your sports equipment a second life!
Designed for replacing the derailleur hanger on your ROCKRIDER MTB
4.69/5
36 reviews
It fits very well on my bike
very practical to avoid buying the complete derailleur!!
perfect for a 24 year old 14 inch ot dog!
Category
Category
Category
Category
Category
Category
Category
Category
Fidelity card
Please log in to view your member card.
Fidelity card
Please log in to view your member card.
