Shimano RD-M820 Saint Rear Derailleur - 10 Speed
IRDM820SS1
Description
SHIMANO SAINT - Rear Derailleur - SHIMANO SHADOW RD+ - 10-speed
Thanks to its low-profile design and close ratio compatibility, the SHIMANO SAINT M820 rear derailleur is ready for the rough and tumble world of gravity racing.
Feature
- SHIMANO SHADOW RD+ Short cage manage chain slapping nor dropping
- MTB 10-speed system stable against cable contamination
- Silent Bump Stopper
- Durable Super Wide Link
- Low-profile skid plate design
- Close Ratio compatible
- Mode converter
- Direct Mount Rear Derailleur option
- Total capacity: 25T
- Weight: 280g (without mode converter)
Technology
HG-X Chain
Further evolution of shifting performance
A directional mountain bike specific 10-speed HG-X chain means smoother shifts, lighter weight and greater overall performance.
HG-X directional chain: Outer side is optimized for front shifting and inner side is optimized for rear shifting.
SHIMANO SHADOW RD+
- Less distraction quiet drive train
- Rear derailleur stabilizer reduces chain slap
- Simple solution for chain drop
- Lighter and more efficient than roller type chain device
Specification
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Pulley cage
|
SS
|
||
|---|---|---|---|
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Rear speeds
|
10
|
||
|
Compatible chain
|
HG-X 10-speed
|
||
|
Top-Normal spring type
|
SHIMANO SHADOW RD+
|
✔
|
|
|
Mount
|
Direct attachment (Conventional)
|
✔
|
|
|
Direct mount compatible
|
✔*
|
||
|
Mode converter
|
✔
|
||
|
Max. front difference
|
Single
|
||
|
Total capacity
|
25T
|
||
|
Low sprocket
|
Max.
|
28/36T
|
|
|
Min.
|
23T
|
||
|
Top sprocket
|
Max.
|
12T
|
|
|
Min.
|
11T
|
||
|
Fluoric coated link bushings
|
5
|
||
|
Pulley
|
T pulley bearing
|
Sealed Bearing
|
|
|
Teeth
|
11T
|
||
|
Bolts material
|
Stainless steel
|
||
|
Sunken type pulley bolt
|
✔
|
||
|
Bracket
|
Material
|
Aluminum
|
|
|
Finish
|
Painted
|
||
|
B-Axle
|
Hollow axle
|
✔
|
|
|
Material
|
Aluminum
|
||
|
Finish
|
Anodized
|
||
|
B-Axle 2
|
Hollow axle
|
✔
|
|
|
Material
|
Stainless steel
|
||
|
Bracket body
|
Material
|
Aluminum
|
|
|
Finish
|
Painted
|
||
|
P-Axle
|
Material
|
Steel
|
|
|
Plate body
|
Material
|
Aluminum
|
|
|
Finish
|
Painted
|
||
|
Outer link
|
Material
|
Aluminum
|
|
|
Finish
|
Painted
|
||
|
Inner link
|
Material
|
Aluminum
|
|
|
Finish
|
Painted
|
||
|
Outer plate
|
Material
|
Aluminum
|
|
|
Finish
|
Painted
|
||
|
Inner plate
|
Material
|
Aluminum
|
|
|
Finish
|
Painted
|
||
|
Cable fixing Bolt
|
Material
|
Stainless steel
|
|
|
Finish
|
Black
|
||
|
Stroke Adjusting Screw
|
Material
|
Steel
|
|
|
Finish
|
Plated
|
||
|
Average Weight (pc)
|
280 g (w/o mode converter)
|
||
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