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Shimano
Saint RD-M820 Rear Derailleur

5 out of 5 stars
1 Review
Current price: $116.34 Original price: $178.99
35% off

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Saint RD-M820 Rear Derailleur

Designed for the extremes of downhill racing and freeride disciplines, the Saint RD-M820 Rear Derailleur remains crisp-shifting and noticeably free of drivetrain noise when you're plunging into formidable downhills at high rates of speed and sending bigger features at the freeride park. Since downhill riders tend to push things to the absolute limit, the engineers at Shimano designed it with a low-profile skid plate that minimizes damage in the event of a nasty crash. Another cool feature, its silent bump stopper employs a vibration-absorbing piece of urethane that keeps your drivetrain running silently on aggressive downhills.


One of its best features is the ability to switch between widely spaced mountain bike cassettes and short-block road cassettes with its mode converter. This allows you to run a 10-speed cassette that's tightly spaced for less jump between gears on downhill runs or give your freeride bike a bit more gear range when you actually need to pedal back uphill. It'll work with 10-speed road cassettes of 11 to 23, 11 to 25, and 11 to 28-teeth, as well as 10-speed mountain bike cassettes of 11 to 32, 11 to 34, and 11 to 36-teeth.


Alloy construction maintains high levels of strength without the massive weight penalty you've come to expect from downhill-specific components. Fluorine-coated link pin bushings create silky-smooth shifts across all ten gears. Moreover, it's packing Shimano's Shadow Plus technology, which prevents the chain from violently slapping around when you're plunging downhill at high rates of speed. Shadow Plus engages with a switch that keeps it in a semi-rigid position while you're riding, switching off when you need to move the derailleur out of the way for repairs and wheel swaps.


Details

  • Designed for the extreme rigors of downhill racing
  • Alloy construction for exceptional strength-to-weight
  • Shadow Plus eliminates chain slap and drivetrain noise
  • 10-speed compatibility with road or mountain bike cassettes
  • Silent bump stopper absorbs vibration for a silent drivetrain
  • Low-profile skid plate minimizes damage in event of a crash
  • Fluorine-coated link pin bushings for smooth gear shifts
  • Item #SHI00FP
Capacity
25t
Cassette Range
10-speed road (11-23, 11-25, 11-28), 10-speed mountain bike (11-32, 11-34, 11-36)
Gearing
1x10
Compatibility
Shimano Saint M820
Claimed Weight
280g
Manufacturer Warranty
2 years

Overall Rating

5 based on 1 ratings

Review Summary

1 Stars - 0 reviews
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4 Stars - 0 reviews
5 Stars - 1 reviews

Fits True To Size

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5 out of 5 stars

June 7, 2024

Very durable and quality product

Familiarity:
I've put it through the wringer

Bought around 2 months ago, it went on my downhill. It’s held up great, the clutch is strong and i’ve even taken off the chainstay protection because I found it unnecessary. It shifts smoothly and as expected. It’s really strong, held up to many hard hits.

Zach