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Michael Gideons
Reviewed in the United States on September 20, 2024
Restored the shifting on my 20+ year old bike. Better than I remembered. Very crisp and easy.
Coby H.
Reviewed in the United States on June 25, 2023
The pedal cassette (left) shifter has roughly 8 gears although it is only a three-speed shifter, as shown on the shifter itself. It was easy to install as a first-timer. Just watch a video before doing it. Everything was easy and it works fine. I'd recommend buying a Park Tool hex key set because you will need a 2.5mm hex key for this specific grip shift, and a large hex key for moving the brakes out of the way.
Anna
Reviewed in Germany on June 12, 2023
Sehr gut gepasst gute Qualität, schnelle Lieferung
Elvis Bogart
Reviewed in the United States on March 12, 2023
SRAM MRX Comp Bicycle 3x6 Twist Shifter Set brought life back to an old bike. The shifters on this old bike were near frozen and the grips were hard as a rock. The shifter kit came with new grips and new cables. I did replace the cable housing for this project at extra cost. This kit integrated well with the existing Shimano Exage Country groupset that was installed on bike. The shifting is not as stiff as other grip shifts I have setup on other bikes. I'm glad I'm still able to keep old bikes going. Thanks SRAM!An addition to this review. I cracked a housing on my original grip shift and replaced the shifters with a new set on my 1998 Specialized Crossroads with a 3x7 set. This package included 2 shifters, cables and SRAM branded grips. MRX shifters are intended for Shimano Derailleurs. This bike has Shimano Acera X derailleurs. These shift much smoother and are less sticky than the old shifters. I replaced the cable housing for my bike with Jag wire branded shifter housing at extra cost. The grips are soft, yet firm, they don’t feel too squishy. To help prevent the ends of grips from ripping, I inserted a nickel in each grip to work as a bar end. They cost 5 cents a piece. A good channel to follow in installing this product is from “Bike Farmer”. As I dig more bikes out of people’s trash and restore them, these shifters are my go to for any pre y2k mountain bikes.
Gianluca
Reviewed in Italy on April 21, 2023
manca nella descrizione il rapporto di corsa, a me serviva un 1:1 mentre quello in descrizione è un 1:2 e nella descrizione il rapporto non è menzionatocomunque ho risolto utilizzando solo la manopola nuova e lasciando il comando vecchio che comunque stava bene, per la mancata descrizione una stella in meno
Rene Wittmann
Reviewed in Germany on June 28, 2022
Die Gangschaltung ist gut und einfach zu verbauen und einzustellen.Allerdings ist es eine Kombination von 3x6, und nicht wie durch die Bilder anzunehmen 3x7!In der Beschreibung ist die Gangzahl auch nicht zu sehen! Deshalb nur 3 Sterne.Wenn die Beschreibung korrekt wäre: 5 Sterne.
J S
Reviewed in the United States on January 5, 2021
SRAM makes a few different models of grip shifter with different cable pull ratios, 1:1, 2:1, etc. Here's the breakdown of the MRX product line at the time of this review, per the manufacturer documentation:This MRX Comp: 2:1 ratio for Shimano rear derailleursMRX Comp 3.0: 1:1 ratio for SRAM rear derailleursMRX Comp RapidRise: 2:1 ratio for Shimano RapidRise rear derailleursAll models in this list support SRAM and Shimano front derailleursI needed to replace an older, defective SRAM twist shift setup (SRAM part# TS-MRX-A1) on a kids bike which SRAM shows has a 2:1 gear shift ratio to support Shimano derailleurs. This Amazon part (TS-MRXC-A1) seems to be the newest revision of my part. It looks and feels better, but functions roughly the same as the old, more-dated looking part.Installation is a breeze. One warning I would give: this unit comes with either 90mm or 110mm shorty grips, which is great for adult bikes. However, if you're replacing the shifter on a kid-sized 24" bike like me instead of an adult-sized 26" or 27" bike, you'll probably want to spend the extra Hamilton on 60mm grips for proper fitment on smaller handlebars. You can get the shorter 60mm matching grips from SRAM by searching Amazon for this ASIN number: B003WOQ65EAs this was a direct replacement with the exact same ratio, once I properly tensioned my cables, no significant adjustments were required to "tune" things out. Less than 1/2 turn on any of the derailleur adjustment screws to get it perfectly dialed-in, but it was working good-enough without any adjustments. YMMV.My box didn't come with an install manual, just a warranty info packet. You can find the installation manual at the manufacturer website by searching your preferred search engine for: MRX comp user manual PDF. Bing and DuckDuckGo seemed to have the PDF as the top result whereas Google had it for #2. It helps to have the manual, I don't know why it wasn't included in my box!
Eric Parkman
Reviewed in the United Kingdom on January 10, 2018
Excellent. Just what was needed to replace the worn out set on my bike
Dr. M. Ockendon
Reviewed in the United Kingdom on December 25, 2017
Not quite as nice in terms of feedback as the shifters they replaced but they are good for the price and gave an old bike a new lease of life.
Michael C.
Reviewed in the United States on November 21, 2015
Easy to install and comes with all the parts you'll ever need. As a bonus, it comes with instructions on how to replace the cable in addition to the installation instructions. Next time, you can simply purchase the cable and use these instructions to replace the cable instead of buying a whole new set (which some other shifters require).These are a big step up from the original shifters that came with my wife's bike. There is more surface area to grip the shifters and there are intermediate clicks between the front gears, significantly decreasing the effort required to shift to those higher gears. The fine tuners are sturdy and are really helpful to prevent chain rub.Overall, I'd say it has good/great build quality for the cost. The only thing that feels cheap about them are the gear indicators, which I'm OK with.
Paul
Reviewed in the United States on October 23, 2015
It seems to work, on a trial basis. Went together simply. The new cable routing will make repair/replace a lot simpler than old. The instructions are online, not in the box (warranty only).The online install adjustment section less than great...as in:"See your derailleur manufacturer instructions...." but not a lot they can do there. I was concerned re. 1:1, 2:1 ratios and all, but I guess old broken MRX = this NEW MRX, as it works. It'd be nice if they threw in some lube, as you aren't supposed to use oil-based lube with plastic...but if I need it eventually, I'll do that as wellThe two were a fair bit cheaper than what I could find around town. Just put on the one I needed to, I doubt the 8yo boy will notice they do not currently match. When the crank-ring shifter goes, then they will again match. He also does not need the latest whiz-bang components on his 3rd grader Mt. bike.
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