Giustaforza II PRO 2-16 Torque Wrench by Effetto Mariposa
The Giustaforza II PRO 2-16 "Correct Force" Torque Wrench is the second generation of the world's first bicycle torque wrench. Designed to allow a safe use of lightweight parts. This bike wrench is made in Italy by Effetto Mariposa. ... read more
Brand: Effetto MariposaProduct Code: EMGF2PB216
Availability: In Stock
Effetto Mariposa Giustaforza Tech Video
In this Giustaforza tech video, Effetto Mariposa showcases some ways to use the Giustaforza and some tips for home mechanics.
The Giustaforza "Correct Force" Torque Wrench is the first bicycle torque wrench specifically designed for precision lightweight bicycle parts.
Note: Always return the GF setting back to 2 Nm when not in use to ensure long-term accuracy.
- Now with rounded head for easier access to hard-to-reach bolts!
- Ratcheting head ( NEW and only available on this PRO model)
- Extremely User-Friendly
- Ideal Torque Range, 2-16 Nm
- Graduated scale with 0.5 Nm increments
- 13 bits included
- Body: Anodized aluminum, red
- Adjustment knob: Steel
- Bit-holder: Steel
- Professional precision: +/-4% guaranteed for 5,000 clicks (torque applications)
- Unique serial number
- Case: Aluminum box
- Recalibration: 1st recalibration FREE (only free with this PRO model)
- Made in Italy
All the Details
Ideal Torque Range, 2-16 Nm*
This is the best torque range for precision bicycle applications and 'sensitive' components. 2 Nm is good for small aluminum screws, 16 Nm is enough for big M6 bolts used in some seatposts. A wider scale wouldn't allow the same precision at the range extremes. In use, always refer to the suggested (on technical documentation or on the part itself) torque values.
*For a Nm to Inch-Pound Conversion chart go to: Nm_to_Pounds_Torque_Table.pdf
Extremely User-Friendly
- set the maximum torque rotating the handle terminal, reading the torque on the tool-window (Graduated scale with 0.5 Nm increments)
- insert the appropriate bit (depending on the bolt you need to tighten)
- using the tool, a loud 'CLICK' and a 3° free-movement tells when the torque has been reached

13 Bits Included
-
25mm bits (S2 steel)
- 2, 2.5, 3, 6
- T10, T15, T20, T30
- - 3/16
- + PH1
-
100mm bits (S2 steel)
- 4, 5
- T25
- Extender
Lightweight & Strong
The light aluminum body keeps the weight down to a record-breaking 168g per wrench, less than half the weight of heavy industrial wrenches often used for bicycles. This is paramount to get the right torquing sensitivity at low torque values, without mistaking the effort to hold the tool with the applied torque. Adjustment knob and bit-holder are made of steel, to better stand daily use.
Professional Precision
Torque tolerance is +-4%, according to UNI EN ISO 6789:2004 norm (calibration certificate with SIT reference is available for a new torque wrench upon request for an additional cost of $50).
Calibration Service
After 5000 cycles (5000 'clicks'), the GF wrench should be re-calibrated. Calibration is a service we offer in our laboratories at the cost of $50 plus $9.95 shipping and handling (first calibration included with PRO wrench). After every calibration, the tolerance of +/-4% over nominal values is guaranteed. After calibration, the wrench will return to the customer with a calibration certificate.
A State-of-the-Art Tool
Made in Italy, functional, linear in design, and precise in any detail: shouldn't be a surprise to know that Giustaforza II 2-16Nm has been conceived and produced in Italy. The tool is hard-anodized with laser-etched inscriptions, and it's built to last. Each sample is checked and numbered as a single masterpiece.

Easy and Safe to Carry
The aluminum tool box protects the tool from shocks.
Video, Guides & Manuals
Video: Click the Giustaforza after a Long Storage to Wake it Up
Tip: Extreme Temperatures and Long Storage of the Giustaforza
Recalibrate & Register
Serviceable for a Lifetime
The Giustaforza bicycle torque wrench is a professional tool and is serviceable for a lifetime, so register it today.
Giustaforza Recalibration
Need to have your Giustaforza serviced? Learn more or submit your information using our Giustaforza Recalibration & Process page.
Giustaforza Registration
No matter if you purchased your Giustaforza from us or one of our retail shops, you can register the torque wrench here. Register your Giustaforza using this form.
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