Shimano Acera SL-M310 Rapid Fire Shifter, Left (Black, 3-Speed ) Review

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Purchased this shifter to replace the broken one on my wife's 21 speed Trek mountain bike. Item arrived in about a week in factory packaging and installed easily in about 20 minutes. My wife likes this thumb shifter much more than the original as it has a more positive thumb "click" (both tactile and aural) plus a visual gear indicator.

Not shown in the product photo but included in the box:

1. full length steel cable.

2. handlebar mounting bracket.

Jay

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Bought this set to replace the grip shifters that came on my Walmart Mongoose Deception 29". The "Wal-Goose" is a 7 speed rear cassette and 3 speed front sprocket. The SRAM grip shifters were junk, these went on with no problem and I had them adjusted and working perfect in about an hour. Like other reviewers said these come with the new cable preattached so all I had to do was route the cable through my existing housings.

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I ordered these shifters about a month or so ago. They took two weeks to come in. They work really great! I ordered these because like the guy below me ( not exactly below), I have a walmart mongoose 29'er deception and it crapped out about month after I got it. I have been slowly upgrading everything and these shifters are smooth. these are a lot better than the original twist shifters that came with the bike. the next thing I am going to do is upgrade the cassette and buy new handle bar grips and ill be set! I do recommend these shifters though. for the price, it was well worth it.

hopefully this was a good review as it is my first one.

Honest reviews on Shimano Acera SL-M310 Rapid Fire Shifter, Left (Black, 3-Speed )

These M310 trigger shifters do a great job of shifting the gears. Fast, great shift feel, accurate and solidly built. And I like that the indicators are tucked up close to the underside of the bars where they are protected from impacts. Other trigger shifters have the gear indicators above the bars, where they are more subject to damage in a crash.

I use these shifters with the Shimano Alivio FD-M412 front and RD-M410 rear derailleurs, Shimano MF-HG37 freewheel, and Shimano HG70 chain. These components work very well together. A fabulous upgrade over the Shimano Tourney rear derailleur, SRAM twist grip shifters, and Falcon freewheel & front derailleur that came on the bike new.

Feels like a whole new bike!

Use the 3 speed shifter with this 7 speed shifter.

Shimano Acera SL-M310 Rapid Fire Shifter, Right (Black, 7-Speed)

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This part perfectly replaced the drive gear selector on my old 21 speed mountain bike. The original no longer functioned and I liked the bike, so I purchased this part as a replacement and it works great. I am glad that I made this modest investment.