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Shimano Ultegra Rear Derailleur RD-6600

Marsoni M251S
Sale price$107.00
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Shimano Ultegra Rear Derailleur RD-6600Details: Brand Model: Shimano Ultegra RD 6600 Type: Rear Derailleur Specification: 10 Speed Condition: Used, Cleaned, Fully Functional Origin: Made in Japan Description: Shimano Ultegra RD 6600 10 speed rear derailleur, made in Japan. Provides reliable indexing and precise shifting, an excellent choice for road bike restorations, retro cycling projects, or completing an authentic Ultegra groupset.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.1 ★★★★★
Based on 748 reviews
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A
Verified Purchase
Awesome works just like they said it does.
Fort Morgan, US
★★★★★ 5
It’s good
Size: 300A Fuse Holder
It does it’s job.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026
A
Verified Purchase
Anthony S
Birmingham, US
★★★★★ 4
Cover too loose.
Size: 300A Fuse Holder
Nice looking, decent quality, versatile for different gauges. My only complaint with this holder is the cover doesn’t stay on very well, bought 3, and all 3 pop off easily, you will need to zip tie on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
K
Verified Purchase
Kurtiss s.
Chelsea, US
★★★★★ 5
Works as it should.
Size: 300A Fuse Holder
I’ve had several of these in my build for over a year now. Zero issues.
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Reviewed in the United States on December 3, 2025
C
Verified Purchase
Clint
Chelsea, US
★★★★★ 5
Good brand
Size: 300A Fuse Holder
Good product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2025
C
Verified Purchase
chris7soccer
Natrona Heights, US
★★★★★ 5
Great quality! Sounds great and we’ll built!
I’ve owned a couple of these larger Bluetooth “party” speakers and this is by far the best sounding and well built one I’ve owned. The last one I bought was made by Ion and was much larger, but I think this one sounds WAY better and just looks and feels like quality. The Ion just felt cheap and it died just after the warranty period (of course) It wouldn’t power up anymore even when plugged into a wall outlet. The light show is killer in this if you’re out by the pool at night. I almost forgot to mention, this thing is very lightweight, so easy to carry around. It’s a winner.
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Reviewed in the United States on August 15, 2023

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