Effetto Mariposa Giustaforza II Pro Torque Wrench  2015 Mountain Bike Review

Effetto Mariposa Giustaforza II Pro Torque Wrench 2015

Reviews / Tools

Effetto Mariposa 12,456

At A Glance

If, like me, you usually do your bike maintenance with a multi-tool and a bit of guesswork as far as to what those funny numbers with the nm after them mean then this is for you. Bolts on our bikes are made of pretty soft stuff, and over tightening them can lead to a wealth of issues.

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Equally you could over tighten something that actually crushes another part of the bike. All those 10nm and 15nm numbers are there for a reason, so you do things up tight enough that they don’t come undone, and also so that you don’t damage your pride and joy.

A Torque Wrench can make this easy work and this one from Effetto is about as bling as they get. OK it isn’t cheap, but it is rather tidy and being Italian it’s as well made as it is good looking. In the box you get the Torque Wrench and a myriad of different bits. There is more than enough here to put an entire bike together in the correct manner.

You can adjust the amount of torque needed by winding the knob on the end of the shaft. The range is from 2nm to 16nm, which should cover just about every bolt on a bike. In the deluxe version we have here you also get some bike specific bits with 100mm extensions so you can get to those tricky to reach bolts on shifters and elsewhere on the bike.

In terms of quality you are looking at the top draw here, all the bits are manufactured with special grade S2 Steel and they have a very high 62 Hrc surface hardness, so there is no danger of twisting them. Equally the wrench is good for 5000 cycles, in other words 5000 clicks. After that it isn’t guaranteed for it’s +-4% tolerance, but just like a fine Italian sports car you can send the wrench back to the manufacturer for a tune up. It’s a small fee and you get a certificate to prove it has been done.

This is one of those tools that you will buy once, it’s so well built you will never need another one and with the service options it could realistically out live you! It’s expensive, but then so is a Ferrari and you wouldn’t fix that with a cheap tool you got out of a Christmas cracker, so why should your bike be any different?

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This review was in Issue 33 of IMB.

For more information visit Effetto Mariposa


By Rou Chater
Rou Chater is the Publishing Editor of IMB Magazine; he’s a jack-of-all-trades and master of none, but his passion for bikes knows no bounds. His first mountain bike was a Trek 820, which he bought in 1990. It didn’t take him long to earn himself a trip to the hospital on it, and he’s never looked back since. These days he’s keeping it rubber side down, riding locally and overseas as much as possible.

Tried this? What did you think?